def load_acm_file(department, data_file):
while True:
title = data_file.readline().rstrip('\n')
description_raw = data_file.readline().rstrip('\n')
if not description_raw: break
# Clean the description
description = clean(description_raw)
if description is None:
continue
# Generate the appropriate course object.
new_course = Course(
number=0, # blank out course numbers
title=title,
description=description,
description_raw=description_raw)
department.courses.append(new_course)
def load_acm_file(department, data_file):
while True:
title = data_file.readline().rstrip('\n')
description_raw = data_file.readline().rstrip('\n')
if not description_raw: break
# Clean the description
description = clean(description_raw)
if description is None:
continue
# Generate the appropriate course object.
new_course = Course(
number=0, # blank out course numbers
title=title,
description=description,
description_raw=description_raw)
department.courses.append(new_course)
def scrape(args):
"""
Scrape the available data from the AU catalog into a database.
"""
import logging
log = logging.getLogger("root")
log.info("Scraping American University data.")
# Constant values.
catalog_index_url = "http://catalog.american.edu/preview_course_incoming.php?prefix=%s&catoid=3"
course_url = "http://catalog.american.edu/preview_course.php?catoid=%s&coid=%s"
# Regex to select only the catid and coid.
catid_re = re.compile("(^[^']*)|(, this.*$)|(')")
# Regex to isolate prerequisite course titles.
prereq_re = re.compile("([A-Z]{3,4})(-)(\d{3})")
# List of prefixes from the META object.
prefixes = [department.get("abbreviation").lower() for department in META.get("departments")]
# Fetch existing metadata objects from database.
university = META.get("school").get("name")
university = session.query(University).filter(University.name == university).first()
departments = {
department.abbreviation.lower(): department
for department in session.query(Department).filter(Department.university == university).all()
}
prereq_dict = {} # Dictionary of Course : Prereq match list
for prefix in prefixes:
if args.cs and prefix not in ["csc"]:
continue
catalog_index = requests.get(catalog_index_url % prefix)
soup = BeautifulSoup(catalog_index.text)
# Identify the list of courses.
course_list = soup.find_all(name="a", onclick=re.compile("showCourse.*"))
# Identify relevant information for each course.
for course in course_list:
# Generate metadata
log.debug(course.text)
full_title = re.compile("\s+").split(course.text)
cnum = full_title[0].split("-")[1]
title = " ".join(full_title[1:])
# Identify coid to get description.
onclick = course["onclick"]
(catid, coid) = re.sub(catid_re, "", onclick).split(", ")
# Generate a BeautifulSoup object of the course description.
course_page = requests.get(course_url % (catid, coid))
course_soup = BeautifulSoup(course_page.text)
content = course_soup.find(class_="block_content_popup").hr.br
# Remove garbage
[div.extract() for div in content.find_all("div")]
# Grab extra data
extra = ""
em = content.find("em")
while em:
if isinstance(em, NavigableString):
extra += em
else:
extra += em.text
rem = em
em = em.next_sibling
rem.extract()
extra.replace("\n", "").replace("\xa0", "").strip(" ")
# Clean up the description
description_raw = content.text.replace("\n", "").replace("\xa0", "").strip(" ")
description = clean(description_raw)
if description is None:
continue
# Identify prerequisites
prereq_index = extra.find("requis")
prereq_list = None
if prereq_index > -1:
matches = prereq_re.findall(extra[prereq_index:])
if len(matches) > 0:
# Split them up as a dict and store them in a list.
prereq_list = [{"d": match[0], "n": match[-1]} for match in matches] # department # number
# Generate the appropriate course object.
new_course = Course(number=cnum, title=title, description=description, description_raw=description_raw)
departments[prefix.lower()].courses.append(new_course)
# Add in the requested list of prereqs if found.
if prereq_list is not None:
prereq_dict[new_course] = prereq_list
# Iterate over the list of courses, now that they've been created, and
# process their list of requested prerequisites.
for course, prereq_list in prereq_dict.items():
# Skip any courses with a 0-length requested prereq list.
if len(prereq_list) == 0:
continue
log.debug(course)
log.debug(prereq_list)
# Loop over set of prereqs, if there are multiple.
department_stack = []
for prereq in prereq_list:
n = prereq.get("n") # prereq course number
d = prereq.get("d") # prereq course department abbreviation
if d.startswith("OR ") or d.startswith("ND "):
d = d[3:]
# If this is a referential prereq, look up the last course
# observed and hope it's the correct department prefix.
try:
if d in ["and", "or", ","]:
d = department_stack[-1]
department_stack.append(d)
except IndexError: # no previous courses
continue
log.debug("Searching for: %s %s" % (d, n))
# Reference the prerequisite course identified by this
# department abbreviation and course number.
prereq_course = (
session.query(Course)
.join(Department)
.filter(Department.university == university)
.filter(func.lower(Department.abbreviation) == d.lower())
.filter(Course.number == int(n))
.first()
)
# If a valid course was found, tack it onto the prereq list of
# the requesting course (course).
if prereq_course and prereq_course is not course:
course.prerequisites.append(prereq_course)
else:
log.debug("Failed to find course matching '%s %s'." % (d, n))
log.info("Completed scraping.")
def scrape(args):
"""
Scrape the available syllabi from the GMU CS page into a local
directory.
"""
import logging
log = logging.getLogger("root")
log.info( "Scraping GMU data." )
# Constant values.
catalog_index_url = "http://catalog.gmu.edu/preview_course_incoming.php?cattype=combined&prefix=%s"
course_url = "http://catalog.gmu.edu/preview_course.php?catoid=%s&coid=%s"
# Regex to select only the catid and coid.
catid_re = re.compile("(^[^']*)|(, this.*$)|(')")
# Regex to isolate prerequisite course titles.
prereq_re = re.compile("([A-Za-z,]{2,4})(\s|\\\\xa0)(\d{3})")
# List of prefixes from the META object.
prefixes = [department.get("abbreviation").lower()
for department in META.get("departments")]
# Fetch existing metadata objects from database.
university = META.get("school").get("name")
university = session.query(University)\
.filter(University.name==university)\
.first()
departments = {department.abbreviation.lower() : department
for department in session.query(Department)\
.filter(Department.university==university)\
.all()}
prereq_dict = {} # Dictionary of Course : Prereq match list
for prefix in prefixes:
if args.cs and prefix not in ["cs", "ait"]: continue
catalog_index = requests.get(catalog_index_url % prefix)
soup = BeautifulSoup(catalog_index.text)
# Identify the list of courses.
course_list = soup.find_all(
name="a",
onclick=re.compile("showCourse.*"))
# Identify relevant information for each course.
for course in course_list:
# Generate metadata
log.debug(course.text)
full_title = re.compile("\s+").split(course.text)
cnum = full_title[1]
title = ' '.join(full_title[3:])
# Identify coid to get description.
onclick = course['onclick']
(catid, coid) = re.sub(catid_re, "", onclick).split(", ")
# Generate a BeautifulSoup object of the course description.
course_page = requests.get(course_url % (catid, coid))
course_soup = BeautifulSoup(course_page.text)
content = course_soup.find(class_="block_content_popup").hr.text
# Clean up the description.
description = content
try:
description = description[:description.index("Hours of Lecture")]
except:
pass
# Identify prerequisites
prereq_index = description.find("Prerequisite(s)")
prereq_list = None
if prereq_index > -1:
# Grab the substring of prereqs and find matches.
notes_index = description.find("Notes")
prereq_string = description[prereq_index:notes_index]
description = description[:prereq_index]
matches = prereq_re.findall(prereq_string)
if len(matches) > 0:
# Split them up as a dict and store them in a list.
prereq_list = [{
"d": match[0], # department
"n": match[2] # number
} for match in matches]
# Clean the description string
description_raw = description
description = clean(description)
if description is None:
continue
# Generate the appropriate course object.
new_course = Course(
number=cnum,
title=title,
description=description,
description_raw=description_raw)
departments[prefix.lower()].courses.append(new_course)
# Add in the requested list of prereqs if found.
if prereq_list is not None:
prereq_dict[new_course] = prereq_list
# Iterate over the list of courses, now that they've been created, and
# process their list of requested prerequisites.
for course, prereq_list in prereq_dict.items():
# Skip any courses with a 0-length requested prereq list.
if len(prereq_list) == 0:
continue
log.debug(course)
log.debug(prereq_list)
# Loop over set of prereqs, if there are multiple.
department_stack = []
for prereq in prereq_list:
n = prereq.get("n") # prereq course number
d = prereq.get("d") # prereq course department abbreviation
# If this is a referential prereq, look up the last course
# observed and hope it's the correct department prefix.
try:
if d in ["and", "or", ","]:
d = department_stack[-1]
department_stack.append(d)
except IndexError: # no previous courses
continue
log.debug("Searching for: %s %s" % (d, n))
# Reference the prerequisite course identified by this
# department abbreviation and course number.
prereq_course = session.query(Course) \
.join(Department) \
.filter(Department.university==university) \
.filter(func.lower(Department.abbreviation)==d.lower()) \
.filter(Course.number==int(n)) \
.first()
# If a valid course was found, tack it onto the prereq list of
# the requesting course (course).
if prereq_course and prereq_course is not course:
course.prerequisites.append(prereq_course)
else:
log.debug("Failed to find course matching '%s %s'." % (d, n))
log.info("Completed scraping.")
def scrape(args):
"""
Scrape the available syllabi from the Utah catalog into a local
directory.
"""
import logging
log = logging.getLogger("root")
log.info("Scraping Utah data.")
# Constant values.
catalog_index_url = "http://catalog.utah.edu/preview_course_incoming.php?prefix=%s&catoid=6"
course_url = "http://catalog.utah.edu/preview_course.php?catoid=%s&coid=%s"
# Regex to select only the catid and coid.
catid_re = re.compile("(^[^']*)|(, this.*$)|(')")
# Regex to isolate prerequisite course titles.
prereq_re = re.compile(
"(([A-Z]{2,5})|([A-Z]{2}(\s|\\\\xa0)[A-Z]{2})|(H(\s|\\\\xa0)[A-Z]{3}))(\s|\\\\xa0)(\d{4})"
)
# List of prefixes from the META object.
prefixes = [
department.get("abbreviation").lower()
for department in META.get("departments")
]
# Fetch existing metadata objects from database.
university = META.get("school").get("name")
university = session.query(University)\
.filter(University.name==university)\
.first()
departments = {department.abbreviation.lower() : department
for department in session.query(Department)\
.filter(Department.university==university)\
.all()}
prereq_dict = {} # Dictionary of Course : Prereq match list
for prefix in prefixes:
if args.cs and prefix not in ["cs"]: continue
catalog_index = requests.get(catalog_index_url % prefix)
soup = BeautifulSoup(catalog_index.text)
# Identify the list of courses.
course_list = soup.find_all(name="a",
onclick=re.compile("showCourse.*"))
# Identify relevant information for each course.
for course in course_list:
# Generate metadata
log.debug(course.text)
full_title = re.compile("\s+").split(course.text)
cnum = full_title[1]
title = ' '.join(full_title[3:])
# Identify coid to get description.
onclick = course['onclick']
(catid, coid) = re.sub(catid_re, "", onclick).split(", ")
# Generate a BeautifulSoup object of the course description.
course_page = requests.get(course_url % (catid, coid))
course_soup = BeautifulSoup(course_page.text)
content = course_soup.find(class_="block_content_popup").hr
# Identify all the course heading data.
strongs = content.find_all("strong")
headings = {}
tag = content
for strong in strongs:
tag = strong.next_sibling
text = ""
while True:
if tag.name == "br": break
if isinstance(tag, NavigableString):
text += tag
else:
text += tag.text
tag = tag.next_sibling
headings[strong.text] = text
# Update the cursor to post-heading data.
content = tag
# Remove the footer links
[a.extract() for a in tag.find_all("a")]
# Clean up the description
description_raw = content.text.replace('\n', '')
description = clean(description_raw)
if description is None:
continue
# Identify prerequisites
prereq_string = headings.get("Enrollment Requirement:")
prereq_list = None
if prereq_string is not None:
matches = prereq_re.findall(prereq_string)
if len(matches) > 0:
# Split them up as a dict and store them in a list.
prereq_list = [
{
"d": match[0], # department
"n": match[-1] # number
} for match in matches
]
# Generate the appropriate course object.
new_course = Course(number=cnum,
title=title,
description=description,
description_raw=description_raw)
departments[prefix.lower()].courses.append(new_course)
# Add in the requested list of prereqs if found.
if prereq_list is not None:
prereq_dict[new_course] = prereq_list
# Iterate over the list of courses, now that they've been created, and
# process their list of requested prerequisites.
for course, prereq_list in prereq_dict.items():
# Skip any courses with a 0-length requested prereq list.
if len(prereq_list) == 0:
continue
log.debug(course)
log.debug(prereq_list)
# Loop over set of prereqs, if there are multiple.
department_stack = []
for prereq in prereq_list:
n = prereq.get("n") # prereq course number
d = prereq.get("d") # prereq course department abbreviation
if d.startswith("OR ") or d.startswith("ND "):
d = d[3:]
# If this is a referential prereq, look up the last course
# observed and hope it's the correct department prefix.
try:
if d in ["and", "or", ","]:
d = department_stack[-1]
department_stack.append(d)
except IndexError: # no previous courses
continue
log.debug("Searching for: %s %s" % (d, n))
# Reference the prerequisite course identified by this
# department abbreviation and course number.
prereq_course = session.query(Course) \
.join(Department) \
.filter(Department.university==university) \
.filter(func.lower(Department.abbreviation)==d.lower()) \
.filter(Course.number==int(n)) \
.first()
# If a valid course was found, tack it onto the prereq list of
# the requesting course (course).
if prereq_course and prereq_course is not course:
course.prerequisites.append(prereq_course)
else:
log.debug("Failed to find course matching '%s %s'." % (d, n))
log.info("Completed scraping.")
def scrape(args):
"""
Scrape the available syllabi from the PDX CS page into a local
directory.
"""
import logging
log = logging.getLogger("root")
log.info( "Scraping PDX CS data." )
# Construct a soup of the index.
course_index_url = "http://www.pdx.edu/computer-science/courses"
course_index = requests.get(course_index_url)
soup = BeautifulSoup(course_index.text)
# Identify the list of courses.
course_list = soup.find("h3", text="Course List")\
.find_next_sibling("ul")\
.find_all("a")
# Fetch existing metadata objects from database.
university = META.get("school").get("name")
university = session.query(University)\
.filter(University.name==university)\
.first()
departments = {department.abbreviation.lower() : department
for department in session.query(Department)\
.filter(Department.university==university)\
.all()}
for course in course_list:
log.debug(course.text)
full_title = re.compile("\s+").split(course.text)
prefix = full_title[0]
cnum = re.sub('[/]', '-', full_title[1])
title = ' '.join(full_title[2:])
if args.cs and prefix.lower() not in ["cs"]: continue
try:
course_url = course['href']
course_soup = BeautifulSoup(requests.get(course_url).text)
except:
log.warn("Unable to parse course page.")
log.warn(course_url)
continue
# Find the course description based on its neighbour
cdesc_re = re.compile(".*Course Description.*")
cdesc = course_soup.find("table").find(text=cdesc_re)
if not cdesc.next_sibling:
cdesc = cdesc.find_parent("td")
# If there's no course description found, well, forget it
try:
description = cdesc.find_next_sibling("td").text
except:
log.warn("No course description available.")
log.warn(course_url)
continue
# Clean the description string.
description_raw = description
description = clean(description)
if description is None:
continue
# Find the course prerequisite list based on its neighbour
prereq_re = re.compile(".*Prerequi?sites.*")
prereq = course_soup.find("table").find(text=prereq_re)
if not prereq.next_sibling:
prereq = prereq.find_parent("td")
# If there's no prereq list found, leave it as None
try:
prereq = prereq.find_next_sibling("td").text
except:
prereq = None
# Generate the appropriate course object.
departments[prefix.lower()].courses.append(Course(
number=cnum,
title=title,
description_raw=description_raw,
description=description))
log.info( "Completed scraping." )
def scrape(args):
"""
Scrape the available syllabi from the SC CS page into a local
directory.
"""
import logging
log = logging.getLogger("root")
log.info("Scraping SC CS data.")
# Generate a BeautifulSoup object.
catalog_index_url = "http://bulletin.sc.edu/content.php?catoid=36&navoid=4242&filter[27]=CSCE"
catalog_index = requests.get(catalog_index_url)
soup = BeautifulSoup(catalog_index.text)
# Identify the list of courses.
course_list = soup.find_all(
name="a",
onclick=re.compile("showCourse.*"))
# Select only the catoid and coid.
catoid_re = re.compile("(?<=catoid=)\d+")
coid_re = re.compile("(?<=coid=)\d+")
# Piecewise course page url.
course_url = "http://bulletin.sc.edu/preview_course.php?catoid=%s&coid=%s"
# Fetch existing metadata objects from database.
university = META.get("school").get("name")
university = session.query(University)\
.filter(University.name==university)\
.first()
departments = {department.abbreviation.lower() : department
for department in session.query(Department)\
.filter(Department.university==university)\
.all()}
# Identify relevant information for each course.
prereqs = {}
for course in course_list:
# Generate metadata
log.debug(course.text)
full_title = re.compile("\s+").split(course.text)
prefix = full_title[0]
cnum = full_title[1]
title = ' '.join(full_title[3:])
title = title.replace("'", "")
# Identify coid to get description.
href = course['href']
catoid = catoid_re.search(href).group(0)
coid = coid_re.search(href).group(0)
# Generate a BeautifulSoup object of the course description.
course_page = requests.get(course_url % (catoid, coid))
course_soup = BeautifulSoup(course_page.text)
content = course_soup.h1.next_sibling.next_sibling.text
# Clean up the description.
def strip_substring(body, substring):
try: return body[:body.index(substring)]
except: return body
# Clean the content string
content = strip_substring(content, "Print-Friendly Page Close Window")
# Clean the description string
description_raw = content
description_raw = strip_substring(description_raw, "Prereq")
description_raw = strip_substring(description_raw, "Coreq")
description_raw = strip_substring(description_raw, "Note:")
description_raw = strip_substring(description_raw, "Cross-listed")
description = clean(description_raw)
if description is None:
continue
# Generate the appropriate course object.
departments[prefix.lower()].courses.append(Course(
number=cnum,
title=title,
description_raw=description_raw,
description=description))
log.info( "Completed scraping." )
def scrape(args):
"""
Scrape the available syllabi from the LSU CS page into a local
directory.
"""
import logging
log = logging.getLogger("root")
log.info( "Scraping LSU CS data." )
# Generate a BeautifulSoup object.
catalog_index_url = "http://catalog.lsu.edu/content.php?filter[27]=CSC&cur_cat_oid=6&navoid=538"
catalog_index = requests.get( catalog_index_url )
soup = BeautifulSoup( catalog_index.text )
# Identify the list of courses.
course_list = soup.find_all(
name="a",
onclick=re.compile("showCourse.*"))
# Select only the catoid and coid.
catoid_re = re.compile("(?<=catoid=)\d+")
coid_re = re.compile("(?<=coid=)\d+")
# Piecewise course page url.
course_url = "http://catalog.lsu.edu/preview_course_nopop.php?catoid=%s&coid=%s"
# Fetch existing metadata objects from database.
university = META.get("school").get("name")
university = session.query(University)\
.filter(University.name==university)\
.first()
departments = {department.abbreviation.lower() : department
for department in session.query(Department)\
.filter(Department.university==university)\
.all()}
# Identify relevant information for each course.
prereqs = {}
for course in course_list:
# Generate metadata
log.debug(course.text)
full_title = re.compile("\s+").split(course.text)
prefix = full_title[0]
cnum = full_title[1]
title = ' '.join(full_title[2:-1])
title = title.replace("'", "")
# Identify coid to get description.
href = course['href']
catoid = catoid_re.search(href).group(0)
coid = coid_re.search(href).group(0)
# Generate a BeautifulSoup object of the course description.
course_page = requests.get(course_url % (catoid, coid))
course_soup = BeautifulSoup(course_page.text)
content = course_soup.find(class_="block_content").hr
# Remove the metadata.
[em.decompose() for em in content.find_all("em") if True]
# Clean the description string
description_raw = content.text
description = clean(content.text)
if description is None:
continue
# Generate the appropriate course object.
departments[prefix.lower()].courses.append(Course(
number=cnum,
title=title,
description_raw=description_raw,
description=description))
log.info( "Completed scraping." )
def scrape(args):
"""
Scrape the available syllabi from the UTK catalog into a local
directory.
"""
import logging
log = logging.getLogger("root")
log.info("Scraping UTK data.")
# Constant values.
catalog_index_url = "http://catalog.utk.edu/preview_course_incoming.php?prefix=%s&catoid=18"
course_url = "http://catalog.utk.edu/preview_course.php?catoid=%s&coid=%s"
# Regex to select only the catid and coid.
catid_re = re.compile("(^[^']*)|(, this.*$)|(')")
# Regex to isolate prerequisite course titles.
prereq_re = re.compile("(\s|\\\\xa0)(\d{3})")
# List of prefixes from the META object.
prefixes = [
department.get("abbreviation").lower()
for department in META.get("departments")
]
# Fetch existing metadata objects from database.
university = META.get("school").get("name")
university = session.query(University)\
.filter(University.name==university)\
.first()
departments = {department.abbreviation.lower() : department
for department in session.query(Department)\
.filter(Department.university==university)\
.all()}
prereq_dict = {} # Dictionary of Course : Prereq match list
for prefix in prefixes:
if args.cs and prefix not in ["cosc"]: continue
catalog_index = requests.get(catalog_index_url % prefix)
soup = BeautifulSoup(catalog_index.text)
# Identify the list of courses.
course_list = soup.find_all(name="a",
onclick=re.compile("showCourse.*"))
# Identify relevant information for each course.
for course in course_list:
# Generate metadata
log.debug(course.text)
full_title = re.compile("\s+").split(course.text)
cnum = full_title[1]
title = ' '.join(full_title[3:])
# Identify coid to get description.
onclick = course['onclick']
(catid, coid) = re.sub(catid_re, "", onclick).split(", ")
# Generate a BeautifulSoup object of the course description.
course_page = requests.get(course_url % (catid, coid))
course_soup = BeautifulSoup(course_page.text)
content = course_soup.find(class_="block_content_popup").hr
# Clean out garbage
[div.extract() for div in content.find_all("div")]
extra = ' '.join(
[em.extract().text for em in content.find_all("em")])
extra.strip(' ')
# Clean up the description
description_raw = content.text.replace('\n', '').strip(' ')
description = clean(description_raw)
if description is None:
continue
# Identify prerequisites
prereq_index = extra.find("requisite")
prereq_list = None
if prereq_index > -1:
prereq_string = extra[prereq_index:]
matches = prereq_re.findall(prereq_string)
if len(matches) > 0:
# Split them up as a dict and store them in a list.
# Naiive assumption that every course number is within
# the same department because the department titles are
# written out and not matchable.
prereq_list = [
{
"d": prefix.lower(), # department
"n": match[-1] # number
} for match in matches
]
# Generate the appropriate course object.
new_course = Course(number=cnum,
title=title,
description=description,
description_raw=description_raw)
departments[prefix.lower()].courses.append(new_course)
# Add in the requested list of prereqs if found.
if prereq_list is not None:
prereq_dict[new_course] = prereq_list
# Iterate over the list of courses, now that they've been created, and
# process their list of requested prerequisites.
for course, prereq_list in prereq_dict.items():
# Skip any courses with a 0-length requested prereq list.
if len(prereq_list) == 0:
continue
log.debug(course)
log.debug(prereq_list)
# Loop over set of prereqs, if there are multiple.
department_stack = []
for prereq in prereq_list:
n = prereq.get("n") # prereq course number
d = prereq.get("d") # prereq course department abbreviation
log.debug("Searching for: %s %s" % (d, n))
# Reference the prerequisite course identified by this
# department abbreviation and course number.
prereq_course = session.query(Course) \
.join(Department) \
.filter(Department.university==university) \
.filter(func.lower(Department.abbreviation)==d.lower()) \
.filter(Course.number==int(n)) \
.first()
# If a valid course was found, tack it onto the prereq list of
# the requesting course (course).
if prereq_course and prereq_course is not course:
course.prerequisites.append(prereq_course)
else:
log.debug("Failed to find course matching '%s %s'." % (d, n))
log.info("Completed scraping.")
def scrape(args):
"""
Scrape the available syllabi from the RPI CS page into a local
directory.
"""
import logging
log = logging.getLogger("root")
log.info( "Scraping RPI CS data." )
# Generate a BeautifulSoup object.
catalog_index_url = "http://catalog.rpi.edu/content.php?filter[27]=CSCI&cur_cat_oid=13&navoid=313"
catalog_index = requests.get( catalog_index_url )
soup = BeautifulSoup( catalog_index.text )
# Identify the list of courses.
course_list = soup.find_all(
name="a",
onclick=re.compile("showCourse.*"))
# Select only the catoid and coid.
catoid_re = re.compile("(?<=catoid=)\d+")
coid_re = re.compile("(?<=coid=)\d+")
# Piecewise course page url.
course_url = "http://catalog.rpi.edu/preview_course_nopop.php?catoid=%s&coid=%s"
# Fetch existing metadata objects from database.
university = META.get("school").get("name")
university = session.query(University)\
.filter(University.name==university)\
.first()
departments = {department.abbreviation.lower() : department
for department in session.query(Department)\
.filter(Department.university==university)\
.all()}
# Identify relevant information for each course.
prereqs = {}
for course in course_list:
# Generate metadata
log.debug(course.text)
full_title = re.compile("\s+").split(course.text)
prefix = full_title[0]
cnum = full_title[1]
title = ' '.join(full_title[3:])
title = title.replace("'", "")
# Identify coid to get description.
href = course['href']
catoid = catoid_re.search(href).group(0)
coid = coid_re.search(href).group(0)
# Generate a BeautifulSoup object of the course description.
course_page = requests.get( course_url % (catoid, coid) )
course_soup = BeautifulSoup( course_page.text )
content = course_soup.find(class_="block_content").hr.text
# Clean up the description.
description = content
try:
description = description[:description.index("Credit Hours")]
description = description[:description.index("When Offered")]
except:
pass
# Identify prerequisites
# TODO: Match these up with their database entries.
prereq_index = description.find("Prerequisit")
if prereq_index > -1:
prereq_string = description[prereq_index:]
description = description[:prereq_index]
prereq_re = re.compile("\w{2,4}\s\d{3}")
matches = re.findall(prereq_re, prereq_string)
if len(matches) > 0:
prereqs["%s %s" % (prefix, cnum)] = matches
# Clean the description string
description_raw = description
description = clean(description)
if description is None:
continue
# Generate the appropriate course object.
departments[prefix.lower()].courses.append(Course(
number=cnum,
title=title,
description_raw=description_raw,
description=description))
log.info( "Completed scraping." )
def scrape(args):
"""
Scrape the available syllabi from the Stanford CS page into a local
directory.
"""
import logging
log = logging.getLogger("root")
log.info("Scraping Stanford CS data.")
# Fetch existing metadata objects from database.
university = META.get("school").get("name")
university = session.query(University)\
.filter(University.name==university)\
.first()
departments = {department.abbreviation.lower() : department
for department in session.query(Department)\
.filter(Department.university==university)\
.all()}
# Static connection information
catalog_url = "https://explorecourses.stanford.edu/search?q=CS&view=catalog&filter-departmentcode-CS=on&filter-term-Spring=on&filter-coursestatus-Active=on&page="
catalog_page = 0
catalog_page_limit = 8
headers = {
"user-agent": "Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36\
(KHTML, like Gecko) Chrome/41.0.2228.0 Safari/537.36"
}
# Loop forever until we get to the last page and can't "next >" any
# more, in which case we stop.
while True:
# There are currently only 8 pages, so break after we see that
# many.
if catalog_page == catalog_page_limit:
break
# Generate a BeautifulSoup object.
response = requests.get(catalog_url + str(catalog_page),
headers=headers)
soup = BeautifulSoup(response.text)
# Identify the course list.
course_list = soup.find_all(class_="searchResult")
# Identify relevant information for each course.
for course in course_list:
# Generate metadata
title = course.find(class_="courseTitle").text
identifier = re.compile("\s+").split(
course.find(class_="courseNumber").text)
prefix = identifier[0]
cnum = identifier[1][:-1]
description = course.find(class_="courseDescription").text
log.debug(identifier)
# Identify prerequisites or corequisites.
# TODO: Match these up with their database entries.
prereq_index = description.find("Prerequisite")
if prereq_index > -1:
prereq_string = description[prereq_index:]
description = description[:prereq_index]
# Clean the description string
description_raw = description
description = clean(description)
if description is None:
continue
# Generate the appropriate course object.
departments[prefix.lower()].courses.append(Course(
number=cnum,
title=title,
description_raw=description_raw,
description=description))
# Go to the next page.
catalog_page = catalog_page + 1
log.info( "Completed scraping." )
def scrape(args):
"""
Scrape the available syllabi from the RPI CS page into a local
directory.
"""
import logging
log = logging.getLogger("root")
log.info("Scraping RPI CS data.")
# Generate a BeautifulSoup object.
catalog_index_url = "http://catalog.rpi.edu/content.php?filter[27]=CSCI&cur_cat_oid=13&navoid=313"
catalog_index = requests.get(catalog_index_url)
soup = BeautifulSoup(catalog_index.text)
# Identify the list of courses.
course_list = soup.find_all(name="a", onclick=re.compile("showCourse.*"))
# Select only the catoid and coid.
catoid_re = re.compile("(?<=catoid=)\d+")
coid_re = re.compile("(?<=coid=)\d+")
# Piecewise course page url.
course_url = "http://catalog.rpi.edu/preview_course_nopop.php?catoid=%s&coid=%s"
# Fetch existing metadata objects from database.
university = META.get("school").get("name")
university = session.query(University)\
.filter(University.name==university)\
.first()
departments = {department.abbreviation.lower() : department
for department in session.query(Department)\
.filter(Department.university==university)\
.all()}
# Identify relevant information for each course.
prereqs = {}
for course in course_list:
# Generate metadata
log.debug(course.text)
full_title = re.compile("\s+").split(course.text)
prefix = full_title[0]
cnum = full_title[1]
title = ' '.join(full_title[3:])
title = title.replace("'", "")
# Identify coid to get description.
href = course['href']
catoid = catoid_re.search(href).group(0)
coid = coid_re.search(href).group(0)
# Generate a BeautifulSoup object of the course description.
course_page = requests.get(course_url % (catoid, coid))
course_soup = BeautifulSoup(course_page.text)
content = course_soup.find(class_="block_content").hr.text
# Clean up the description.
description = content
try:
description = description[:description.index("Credit Hours")]
description = description[:description.index("When Offered")]
except:
pass
# Identify prerequisites
# TODO: Match these up with their database entries.
prereq_index = description.find("Prerequisit")
if prereq_index > -1:
prereq_string = description[prereq_index:]
description = description[:prereq_index]
prereq_re = re.compile("\w{2,4}\s\d{3}")
matches = re.findall(prereq_re, prereq_string)
if len(matches) > 0:
prereqs["%s %s" % (prefix, cnum)] = matches
# Clean the description string
description_raw = description
description = clean(description)
if description is None:
continue
# Generate the appropriate course object.
departments[prefix.lower()].courses.append(
Course(number=cnum,
title=title,
description_raw=description_raw,
description=description))
log.info("Completed scraping.")
def scrape(args):
"""
Scrape the available syllabi from the KSU CS page into a local
directory.
"""
import logging
log = logging.getLogger("root")
log.info("Scraping KSU data.")
# Constant values.
catalog_index_url = "http://catalog.k-state.edu/content.php?filter[27]=%s&cur_cat_oid=13&navoid=1425"
course_url = "http://catalog.k-state.edu/preview_course_nopop.php?catoid=%s&coid=%s"
# Scraper regexes.
catoid_re = re.compile("(?<=catoid=)\d+")
coid_re = re.compile("(?<=coid=)\d+")
prereq_re = re.compile("([A-Za-z,]{2,5})(\s|\\\\xa0)(\d{3})")
# Fetch existing metadata objects from database.
university = META.get("school").get("name")
university = session.query(University)\
.filter(University.name==university)\
.first()
departments = {department.abbreviation.lower() : department
for department in session.query(Department)\
.filter(Department.university==university)\
.all()}
prereq_dict = {} # Dictionary of Course : Prereq match list
for prefix in departments.keys():
if args.cs and prefix not in ["cis"]: continue
catalog_index = requests.get(catalog_index_url % prefix)
soup = BeautifulSoup(catalog_index.text)
# Identify the list of courses.
course_list = soup.find_all(name="a",
onclick=re.compile("showCourse.*"))
# Identify relevant information for each course.
for course in course_list:
# Generate metadata
log.debug(course.text)
full_title = re.compile("\s+").split(course.text)
#prefix = full_title[0]
cnum = full_title[1]
title = ' '.join(full_title[3:])
title = title.replace("'", "")
# Identify coid to get description.
href = course['href']
catoid = catoid_re.search(href).group(0)
coid = coid_re.search(href).group(0)
# Generate a BeautifulSoup object of the course description.
course_page = requests.get(course_url % (catoid, coid))
course_soup = BeautifulSoup(course_page.text)
# Identify the components of the description and its metadata.
result_set = course_soup.find(class_="block_content") \
.table \
.find_next_sibling("p") \
.h1 \
.find_next_siblings()
# Join them together as text.
content = ' '.join([r.text for r in result_set[1:]])
# Clean up the description.
def strip_substring(body, substring):
try:
return body[:body.index(substring)]
except:
return body
description = content
description = strip_substring(description, "Note")
description = strip_substring(description, "Requisites")
description = strip_substring(description, "When Offered")
description = strip_substring(description, "UGE course")
# Identify prerequisites.
prereq_index = content.find("Requisites")
prereq_list = None
if prereq_index > -1:
# Grab the substring of prereqs and find matches.
prereq_string = content[prereq_index:]
prereq_string = strip_substring(prereq_string, "Note")
prereq_string = strip_substring(prereq_string, "When Offered")
matches = prereq_re.findall(prereq_string)
if len(matches) > 0:
# Split them up as a dict and store them in a list.
prereq_list = [
{
"d": match[0], # department
"n": match[2] # number
} for match in matches
]
# Clean the description string
description_raw = description
description = clean(description_raw)
if description is None:
continue
# Generate the appropriate course object.
new_course = Course(number=cnum,
title=title,
description=description,
description_raw=description_raw)
departments[prefix].courses.append(new_course)
# Add in the requested list of prereqs if found.
if prereq_list is not None:
prereq_dict[new_course] = prereq_list
# Iterate over the list of courses, now that they've been created, and
# process their list of requested prerequisites.
for course, prereq_list in prereq_dict.items():
# Skip any courses with a 0-length requested prereq list.
if len(prereq_list) == 0:
continue
log.debug(course)
log.debug(prereq_list)
# Loop over set of prereqs, if there are multiple.
department_stack = []
for prereq in prereq_list:
n = prereq.get("n") # prereq course number
d = prereq.get("d") # prereq course department abbreviation
# If this is a referential prereq, look up the last course
# observed and hope it's the correct department prefix.
try:
if d in ["and", "or", ","]:
d = department_stack[-1]
department_stack.append(d)
except IndexError: # no previous courses
continue
log.debug("Searching for: %s %s" % (d, n))
# Reference the prerequisite course identified by this
# department abbreviation and course number.
prereq_course = session.query(Course) \
.join(Department) \
.filter(Department.university==university) \
.filter(func.lower(Department.abbreviation)==d.lower()) \
.filter(Course.number==int(n)) \
.first()
# If a valid course was found, tack it onto the prereq list of
# the requesting course (course).
if prereq_course and prereq_course is not course:
course.prerequisites.append(prereq_course)
else:
log.debug("Failed to find course matching '%s %s'." % (d, n))
log.info("Completed scraping.")
def scrape(args):
"""
Scrape the available syllabi from the Utah catalog into a local
directory.
"""
import logging
log = logging.getLogger("root")
log.info("Scraping Utah data.")
# Constant values.
catalog_index_url = "http://catalog.utah.edu/preview_course_incoming.php?prefix=%s&catoid=6"
course_url = "http://catalog.utah.edu/preview_course.php?catoid=%s&coid=%s"
# Regex to select only the catid and coid.
catid_re = re.compile("(^[^']*)|(, this.*$)|(')")
# Regex to isolate prerequisite course titles.
prereq_re = re.compile("(([A-Z]{2,5})|([A-Z]{2}(\s|\\\\xa0)[A-Z]{2})|(H(\s|\\\\xa0)[A-Z]{3}))(\s|\\\\xa0)(\d{4})")
# List of prefixes from the META object.
prefixes = [department.get("abbreviation").lower()
for department in META.get("departments")]
# Fetch existing metadata objects from database.
university = META.get("school").get("name")
university = session.query(University)\
.filter(University.name==university)\
.first()
departments = {department.abbreviation.lower() : department
for department in session.query(Department)\
.filter(Department.university==university)\
.all()}
prereq_dict = {} # Dictionary of Course : Prereq match list
for prefix in prefixes:
if args.cs and prefix not in ["cs"]: continue
catalog_index = requests.get(catalog_index_url % prefix)
soup = BeautifulSoup(catalog_index.text)
# Identify the list of courses.
course_list = soup.find_all(
name="a",
onclick=re.compile("showCourse.*"))
# Identify relevant information for each course.
for course in course_list:
# Generate metadata
log.debug(course.text)
full_title = re.compile("\s+").split(course.text)
cnum = full_title[1]
title = ' '.join(full_title[3:])
# Identify coid to get description.
onclick = course['onclick']
(catid, coid) = re.sub(catid_re, "", onclick).split(", ")
# Generate a BeautifulSoup object of the course description.
course_page = requests.get(course_url % (catid, coid))
course_soup = BeautifulSoup(course_page.text)
content = course_soup.find(class_="block_content_popup").hr
# Identify all the course heading data.
strongs = content.find_all("strong")
headings = {}
tag = content
for strong in strongs:
tag = strong.next_sibling
text = ""
while True:
if tag.name == "br": break
if isinstance(tag, NavigableString):
text += tag
else:
text += tag.text
tag = tag.next_sibling
headings[strong.text] = text
# Update the cursor to post-heading data.
content = tag
# Remove the footer links
[a.extract() for a in tag.find_all("a")]
# Clean up the description
description_raw = content.text.replace('\n', '')
description = clean(description_raw)
if description is None:
continue
# Identify prerequisites
prereq_string = headings.get("Enrollment Requirement:")
prereq_list = None
if prereq_string is not None:
matches = prereq_re.findall(prereq_string)
if len(matches) > 0:
# Split them up as a dict and store them in a list.
prereq_list = [{
"d": match[0], # department
"n": match[-1] # number
} for match in matches]
# Generate the appropriate course object.
new_course = Course(
number=cnum,
title=title,
description=description,
description_raw=description_raw)
departments[prefix.lower()].courses.append(new_course)
# Add in the requested list of prereqs if found.
if prereq_list is not None:
prereq_dict[new_course] = prereq_list
# Iterate over the list of courses, now that they've been created, and
# process their list of requested prerequisites.
for course, prereq_list in prereq_dict.items():
# Skip any courses with a 0-length requested prereq list.
if len(prereq_list) == 0:
continue
log.debug(course)
log.debug(prereq_list)
# Loop over set of prereqs, if there are multiple.
department_stack = []
for prereq in prereq_list:
n = prereq.get("n") # prereq course number
d = prereq.get("d") # prereq course department abbreviation
if d.startswith("OR ") or d.startswith("ND "):
d = d[3:]
# If this is a referential prereq, look up the last course
# observed and hope it's the correct department prefix.
try:
if d in ["and", "or", ","]:
d = department_stack[-1]
department_stack.append(d)
except IndexError: # no previous courses
continue
log.debug("Searching for: %s %s" % (d, n))
# Reference the prerequisite course identified by this
# department abbreviation and course number.
prereq_course = session.query(Course) \
.join(Department) \
.filter(Department.university==university) \
.filter(func.lower(Department.abbreviation)==d.lower()) \
.filter(Course.number==int(n)) \
.first()
# If a valid course was found, tack it onto the prereq list of
# the requesting course (course).
if prereq_course and prereq_course is not course:
course.prerequisites.append(prereq_course)
else:
log.debug("Failed to find course matching '%s %s'." % (d, n))
log.info("Completed scraping.")
def scrape(args):
"""
Scrape the available syllabi from the KSU CS page into a local
directory.
"""
import logging
log = logging.getLogger("root")
log.info( "Scraping KSU data." )
# Constant values.
catalog_index_url = "http://catalog.k-state.edu/content.php?filter[27]=%s&cur_cat_oid=13&navoid=1425"
course_url = "http://catalog.k-state.edu/preview_course_nopop.php?catoid=%s&coid=%s"
# Scraper regexes.
catoid_re = re.compile("(?<=catoid=)\d+")
coid_re = re.compile("(?<=coid=)\d+")
prereq_re = re.compile("([A-Za-z,]{2,5})(\s|\\\\xa0)(\d{3})")
# Fetch existing metadata objects from database.
university = META.get("school").get("name")
university = session.query(University)\
.filter(University.name==university)\
.first()
departments = {department.abbreviation.lower() : department
for department in session.query(Department)\
.filter(Department.university==university)\
.all()}
prereq_dict = {} # Dictionary of Course : Prereq match list
for prefix in departments.keys():
if args.cs and prefix not in ["cis"]: continue
catalog_index = requests.get(catalog_index_url % prefix)
soup = BeautifulSoup(catalog_index.text)
# Identify the list of courses.
course_list = soup.find_all(
name="a",
onclick=re.compile("showCourse.*"))
# Identify relevant information for each course.
for course in course_list:
# Generate metadata
log.debug(course.text)
full_title = re.compile("\s+").split(course.text)
#prefix = full_title[0]
cnum = full_title[1]
title = ' '.join(full_title[3:])
title = title.replace("'", "")
# Identify coid to get description.
href = course['href']
catoid = catoid_re.search(href).group(0)
coid = coid_re.search(href).group(0)
# Generate a BeautifulSoup object of the course description.
course_page = requests.get(course_url % (catoid, coid))
course_soup = BeautifulSoup(course_page.text)
# Identify the components of the description and its metadata.
result_set = course_soup.find(class_="block_content") \
.table \
.find_next_sibling("p") \
.h1 \
.find_next_siblings()
# Join them together as text.
content = ' '.join([r.text for r in result_set[1:]])
# Clean up the description.
def strip_substring(body, substring):
try: return body[:body.index(substring)]
except: return body
description = content
description = strip_substring(description, "Note")
description = strip_substring(description, "Requisites")
description = strip_substring(description, "When Offered")
description = strip_substring(description, "UGE course")
# Identify prerequisites.
prereq_index = content.find("Requisites")
prereq_list = None
if prereq_index > -1:
# Grab the substring of prereqs and find matches.
prereq_string = content[prereq_index:]
prereq_string = strip_substring(prereq_string, "Note")
prereq_string = strip_substring(prereq_string, "When Offered")
matches = prereq_re.findall(prereq_string)
if len(matches) > 0:
# Split them up as a dict and store them in a list.
prereq_list = [{
"d": match[0], # department
"n": match[2] # number
} for match in matches]
# Clean the description string
description_raw = description
description = clean(description_raw)
if description is None:
continue
# Generate the appropriate course object.
new_course = Course(
number=cnum,
title=title,
description=description,
description_raw=description_raw)
departments[prefix].courses.append(new_course)
# Add in the requested list of prereqs if found.
if prereq_list is not None:
prereq_dict[new_course] = prereq_list
# Iterate over the list of courses, now that they've been created, and
# process their list of requested prerequisites.
for course, prereq_list in prereq_dict.items():
# Skip any courses with a 0-length requested prereq list.
if len(prereq_list) == 0:
continue
log.debug(course)
log.debug(prereq_list)
# Loop over set of prereqs, if there are multiple.
department_stack = []
for prereq in prereq_list:
n = prereq.get("n") # prereq course number
d = prereq.get("d") # prereq course department abbreviation
# If this is a referential prereq, look up the last course
# observed and hope it's the correct department prefix.
try:
if d in ["and", "or", ","]:
d = department_stack[-1]
department_stack.append(d)
except IndexError: # no previous courses
continue
log.debug("Searching for: %s %s" % (d, n))
# Reference the prerequisite course identified by this
# department abbreviation and course number.
prereq_course = session.query(Course) \
.join(Department) \
.filter(Department.university==university) \
.filter(func.lower(Department.abbreviation)==d.lower()) \
.filter(Course.number==int(n)) \
.first()
# If a valid course was found, tack it onto the prereq list of
# the requesting course (course).
if prereq_course and prereq_course is not course:
course.prerequisites.append(prereq_course)
else:
log.debug("Failed to find course matching '%s %s'." % (d, n))
log.info("Completed scraping.")
def scrape(args):
"""
Scrape the available syllabi from the Stanford CS page into a local
directory.
"""
import logging
log = logging.getLogger("root")
log.info("Scraping Stanford CS data.")
# Fetch existing metadata objects from database.
university = META.get("school").get("name")
university = session.query(University)\
.filter(University.name==university)\
.first()
departments = {department.abbreviation.lower() : department
for department in session.query(Department)\
.filter(Department.university==university)\
.all()}
# Static connection information
catalog_url = "https://explorecourses.stanford.edu/search?q=CS&view=catalog&filter-departmentcode-CS=on&filter-term-Spring=on&filter-coursestatus-Active=on&page="
catalog_page = 0
catalog_page_limit = 8
headers = {
"user-agent":
"Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36\
(KHTML, like Gecko) Chrome/41.0.2228.0 Safari/537.36"
}
# Loop forever until we get to the last page and can't "next >" any
# more, in which case we stop.
while True:
# There are currently only 8 pages, so break after we see that
# many.
if catalog_page == catalog_page_limit:
break
# Generate a BeautifulSoup object.
response = requests.get(catalog_url + str(catalog_page),
headers=headers)
soup = BeautifulSoup(response.text)
# Identify the course list.
course_list = soup.find_all(class_="searchResult")
# Identify relevant information for each course.
for course in course_list:
# Generate metadata
title = course.find(class_="courseTitle").text
identifier = re.compile("\s+").split(
course.find(class_="courseNumber").text)
prefix = identifier[0]
cnum = identifier[1][:-1]
description = course.find(class_="courseDescription").text
log.debug(identifier)
# Identify prerequisites or corequisites.
# TODO: Match these up with their database entries.
prereq_index = description.find("Prerequisite")
if prereq_index > -1:
prereq_string = description[prereq_index:]
description = description[:prereq_index]
# Clean the description string
description_raw = description
description = clean(description)
if description is None:
continue
# Generate the appropriate course object.
departments[prefix.lower()].courses.append(
Course(number=cnum,
title=title,
description_raw=description_raw,
description=description))
# Go to the next page.
catalog_page = catalog_page + 1
log.info("Completed scraping.")
def scrape(args):
"""
Scrape the available syllabi from the UTK catalog into a local
directory.
"""
import logging
log = logging.getLogger("root")
log.info("Scraping UTK data.")
# Constant values.
catalog_index_url = "http://catalog.utk.edu/preview_course_incoming.php?prefix=%s&catoid=18"
course_url = "http://catalog.utk.edu/preview_course.php?catoid=%s&coid=%s"
# Regex to select only the catid and coid.
catid_re = re.compile("(^[^']*)|(, this.*$)|(')")
# Regex to isolate prerequisite course titles.
prereq_re = re.compile("(\s|\\\\xa0)(\d{3})")
# List of prefixes from the META object.
prefixes = [department.get("abbreviation").lower() for department in META.get("departments")]
# Fetch existing metadata objects from database.
university = META.get("school").get("name")
university = session.query(University).filter(University.name == university).first()
departments = {
department.abbreviation.lower(): department
for department in session.query(Department).filter(Department.university == university).all()
}
prereq_dict = {} # Dictionary of Course : Prereq match list
for prefix in prefixes:
if args.cs and prefix not in ["cosc"]:
continue
catalog_index = requests.get(catalog_index_url % prefix)
soup = BeautifulSoup(catalog_index.text)
# Identify the list of courses.
course_list = soup.find_all(name="a", onclick=re.compile("showCourse.*"))
# Identify relevant information for each course.
for course in course_list:
# Generate metadata
log.debug(course.text)
full_title = re.compile("\s+").split(course.text)
cnum = full_title[1]
title = " ".join(full_title[3:])
# Identify coid to get description.
onclick = course["onclick"]
(catid, coid) = re.sub(catid_re, "", onclick).split(", ")
# Generate a BeautifulSoup object of the course description.
course_page = requests.get(course_url % (catid, coid))
course_soup = BeautifulSoup(course_page.text)
content = course_soup.find(class_="block_content_popup").hr
# Clean out garbage
[div.extract() for div in content.find_all("div")]
extra = " ".join([em.extract().text for em in content.find_all("em")])
extra.strip(" ")
# Clean up the description
description_raw = content.text.replace("\n", "").strip(" ")
description = clean(description_raw)
if description is None:
continue
# Identify prerequisites
prereq_index = extra.find("requisite")
prereq_list = None
if prereq_index > -1:
prereq_string = extra[prereq_index:]
matches = prereq_re.findall(prereq_string)
if len(matches) > 0:
# Split them up as a dict and store them in a list.
# Naiive assumption that every course number is within
# the same department because the department titles are
# written out and not matchable.
prereq_list = [{"d": prefix.lower(), "n": match[-1]} for match in matches] # department # number
# Generate the appropriate course object.
new_course = Course(number=cnum, title=title, description=description, description_raw=description_raw)
departments[prefix.lower()].courses.append(new_course)
# Add in the requested list of prereqs if found.
if prereq_list is not None:
prereq_dict[new_course] = prereq_list
# Iterate over the list of courses, now that they've been created, and
# process their list of requested prerequisites.
for course, prereq_list in prereq_dict.items():
# Skip any courses with a 0-length requested prereq list.
if len(prereq_list) == 0:
continue
log.debug(course)
log.debug(prereq_list)
# Loop over set of prereqs, if there are multiple.
department_stack = []
for prereq in prereq_list:
n = prereq.get("n") # prereq course number
d = prereq.get("d") # prereq course department abbreviation
log.debug("Searching for: %s %s" % (d, n))
# Reference the prerequisite course identified by this
# department abbreviation and course number.
prereq_course = (
session.query(Course)
.join(Department)
.filter(Department.university == university)
.filter(func.lower(Department.abbreviation) == d.lower())
.filter(Course.number == int(n))
.first()
)
# If a valid course was found, tack it onto the prereq list of
# the requesting course (course).
if prereq_course and prereq_course is not course:
course.prerequisites.append(prereq_course)
else:
log.debug("Failed to find course matching '%s %s'." % (d, n))
log.info("Completed scraping.")
