def grade(correct_answer,student_answer):
# initialize dictionary
if not ('dictionary_filename' in globals()):
global dictionary_filename
dictionary_filename = 'en.txt'
if not ('gradecomp' in globals()):
global gradecomp
gradecomp = gradeComparator(dictionary_filename)
# initialize word regex
if not ('word_regex' in globals()):
global word_regex
punc = re.escape(string.punctuation)
word_regex = re.compile(r'([^\s{}]+[^\s]+[^\s{}]+)|([^\s{}]+)' \
.format(punc, punc, punc), flags=re.UNICODE)
correct_wlocs = getWordLocs(correct_answer)
student_wlocs = getWordLocs(student_answer)
correct_words = [correct_answer[loc[0]:loc[1]] for loc in correct_wlocs]
student_words = [student_answer[loc[0]:loc[1]] for loc in student_wlocs]
cnum = len(correct_words)
snum = len(student_words)
distance = cnum - snum
#student answer has more words than correct answer
#student answer has more than 1 word missing
if distance < 0 or distance > 1:
return (False, None, [])
# set bummer trailing word
if distance == 1:
clastword = correct_words[cnum - 1]
bummerword = clastword + 'ab'
student_words.append(bummerword)
error_num = 0
mistake_type = ""
highlights = []
# index of current word in student answer
i = 0
for j in range(cnum):
grade = gradecomp.gradeWord(correct_words[j], student_words[i])
if grade == "Wrong":
error_num += 1
if error_num > 1:
return (False, None, [])
if distance == 1:
# MISSING WORD
if i != cnum - 1:
start = student_wlocs[i][0]
else:
start = len(student_answer)
i -= 1
mistake_type = "missing"
highlights = []
highlights.append((correct_wlocs[j],(start,start)))
else:
# WRONG WORD
mistake_type = "wrong_word"
highlights = []
highlights.append((correct_wlocs[j],student_wlocs[i]))
elif grade == "Typo":
# TYPO
if mistake_type == "":
mistake_type = "typo"
if mistake_type == "typo":
highlights.append((correct_wlocs[j],student_wlocs[i]))
i += 1
# report result
if mistake_type == "":
return (True, None, [])
elif mistake_type == "typo":
return (True, mistake_type, highlights)
else:
return (False, mistake_type, highlights)
def changeDictionary(dictionary_filename):
global gradecomp
gradecomp = gradeComparator(dictionary_filename)
#print grade(u"abaissâme", u"abaissâmes")
