def calculate_things_semester(file_name):
semester = input('Enter the semester number: ')
disc_list = file_modules.listing(file_name)
total_hours = 0
for discipline in filter(lambda x: x[1] == semester, disc_list):
total_hours += int(discipline[2])
return total_hours
def calculate_oldest_book(file_name):
books_list = file_modules.listing(file_name)
oldest_book = None
oldest_year = int(books_list[0][3])
for book in filter(lambda x: int(x[3]) < oldest_year, books_list):
oldest_book = book
return oldest_book
def calculate_most_populated(file_name, continent):
country_list = file_modules.listing(file_name)
most_populated = country_list[0]
for country in filter(
lambda x: x[1] == continent and x[2] > most_populated[2],
country_list):
most_populated = country
return country
def calculate_unique_lecturers(file_name):
disc_list = file_modules.listing(file_name)
lecturers_list = []
for discipline in filter(lambda x: x[4] not in lecturers_list, disc_list):
lecturers_list.append(discipline[4])
return lecturers_list
def youngest_creditor(file_name):
clients_list = file_modules.listing(file_name)
def calculate_credits(file_name):
clients_list = file_modules.listing(file_name)
return reduce(lambda l, r: l + int(r[4]), clients_list, 0)
def calculate_continent_countries(file_name, continent):
country_list = file_modules.listing(file_name)
smr = 0
for country in filter(lambda x: x[1] == continent, country_list):
smr += 1
return smr
def calculate_unique_authors(file_name):
books_list = file_modules.listing(file_name)
unique_authors = []
for book in filter(lambda x: x[0] not in unique_authors, books_list):
unique_authors.append(book[0])
return unique_authors