2020年学习Python-爬取百度图片

import requests, time

data = input('请输入搜索对象')
page = eval(input('输入搜索页码'))
url = 'https://image.baidu.com/search/acjson?'
headers = {
    'User-Agent': 'Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/84.0.4147.125 Safari/537.36',
    'Host': 'image.baidu.com',
    'Cookie':' 略。。。'
    
params = {
    'tn': 'resultjson_com',
    'ipn': 'rj',
    'ct': 201326592,
    'is': '',
    'fp': 'result',
    'queryWord': f'{data}',
    'cl': 2,
    'lm': -1,
    'ie': 'utf-8',
    'oe': 'utf-8',
    'adpicid': '',
    'st': -1,
    'z': '',
    'ic': 0,
    'hd': '',
    'latest': '',
    'copyright': '',
    'word': f"{data}",
    's': '',
    'se': '',
    'tab': '',
    'width': '',
    'height': '',
    'face': 0,
    'istype': 2,
    'qc': '',
    'nc': 1,
    'fr': '',
    'expermode': '',
    'force': '' '',
    'cg': 'girl',
    'pn': f'{int(page) * 30}',  # 改参数
    'rn': 30,  # 改 参数
    'gsm': '1e',
    f'{str(int(time.time() * 1000))}': '',
}  # 带参数
str_table = {
    '_z2C$q': ':',
    '_z&e3B': '.',
    'AzdH3F': '/'
}
char_table = {
    'w': 'a',
    'k': 'b',
    'v': 'c',
    '1': 'd',
    'j': 'e',
    'u': 'f',
    '2': 'g',
    'i': 'h',
    't': 'i',
    '3': 'j',
    'h': 'k',
    's': 'l',
    '4': 'm',
    'g': 'n',
    '5': 'o',
    'r': 'p',
    'q': 'q',
    '6': 'r',
    'f': 's',
    'p': 't',
    '7': 'u',
    'e': 'v',
    'o': 'w',
    '8': '1',
    'd': '2',
    'n': '3',
    '9': '4',
    'c': '5',
    'm': '6',
    '0': '7',
    'b': '8',
    'l': '9',
    'a': '0'
}
char_table = {ord(key): ord(value) for key, value in char_table.items()}


def decode(url):
    # 先替换字符串
    for key, value in str_table.items():
        url = url.replace(key, value)
    # 再替换剩下的字符
    return url.translate(char_table)


res = requests.get(url, headers=headers, params=params).json()
list1 = [i for i in res['data']]
for i in list1:
    print(i)
    if i:
        name = i['fromPageTitleEnc']
        url = decode(i['objURL'])
        with open(name + '.jpg', 'wb')as f:
            f.write(requests.get(url).content)