报错name 'url' is not defined，眼睛都看花了

辉晖飛

import urllib.request
import os
import re

def url_open():
    req = urllib.request.Request(url)
    req.add_header('User-Agent','Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3013.3 Safari/537.36')
    response = urllib.request.urlopen(url)
    html = response.read()

    return html
    
def get_page(url):
    html = url_open().decode('utf-8')

    p = r'current-comment-page">\[(\d{1,})\]'
    cp = re.findall(p, html)
    s = ''.join(cp)

    return s 

def find_imgs(url):
    html = url_open().decode('utf-8')

    p=r'<img src="//(.+\.jpg)'
    img_addrs = re.findall(p, html)

    for each in img_addrs:
        print(each)
    return img_addrs
            

def save_imgs(folder, img_addrs):
    p=r'/(.+\.jpg)'
    for each in img_addrs:
        filename = re.findall(p,each)
        #filename = each.split('/')[-1]
        with open(filename, 'wb') as f:
            img = url_open(each)
            f.write(img)

def download_pic(folder='img', pages=10):
#    os.mkdir(folder)
    os.chdir(folder)

    url = "http://jandan.net/pic/"
    page_num = int(get_page(url))

    for i in range(pages):
        page_num -= i
        page_url = url + 'page-' + str(page_num) + '#comments'
        img_addrs = find_imgs(page_url)
        save_imgs(folder, img_addres)

if __name__ == '__main__':
    download_pic()

Traceback (most recent call last):
  File "E:\workspace\py\download_pic.py", line 74, in <module>
    download_pic()
  File "E:\workspace\py\download_pic.py", line 65, in download_pic
    page_num = int(get_page(url))
  File "E:\workspace\py\download_pic.py", line 14, in get_page
    html = url_open().decode('utf-8')
  File "E:\workspace\py\download_pic.py", line 6, in url_open
    req = urllib.request.Request(url)
NameError: name 'url' is not defined

眼花花不知道在哪里写错，，正则也用的怪怪的

SixPy

def url_open(url):

五行缺五行

url_open函数怎么没有参数呢？

辉晖飛

就是加了报错，才去掉的
Traceback (most recent call last):
  File "E:\workspace\py\download_pic.py", line 79, in <module>
    download_pic()
  File "E:\workspace\py\download_pic.py", line 70, in download_pic
    page_num = int(get_page(url))
  File "E:\workspace\py\download_pic.py", line 15, in get_page
    html = url_open().decode('utf-8')
TypeError: url_open() missing 1 required positional argument: 'url'