import requests

url = ''

banji = []

zhuanye = []

for a in range(10):

for b in range(10):

banji.append(str(a) + '0' + str(b))

for c in range(10):

zhuanye.append('20' + str(c))

for year in range(2011, 2015):

for xh in zhuanye:

for nj in banji:

for i in range(1, 35):

if i < 10:

xuehao = str(year) + str(xh) + str(nj) + '0' + str(i)

student_url = url + xuehao

with open('E:/student_img/%s.jpeg' % xuehao, 'wb') as file:

file.write(requests.get(student_url).content)

else:

xuehao = str(year) + str(xh) + str(nj) + str(i)

student_url = url + xuehao

with open('E:/student_img/%s.jpeg' % xuehao, 'wb') as file:

file.write(requests.get(student_url).content)

print('OK!')