简单用到两个库：

1.requests
2.json

headers需要三项

1.User-Agent
2.cookie
3.content-type

网页分析

经过分析，可以知道用户基本信息都是从接口api：'https://www.kuaishou.com/graphql'中响应的。是经过post类型传参，payload完整填写时，其中keyword为用户id，赋予一个变量为 search_id = input('请输入快手ID：')。

url = 'https://www.kuaishou.com/graphql'
payload = {"operationName": "graphqlSearchUser",
           "variables": {"keyword":search_id},
           "query": "query graphqlSearchUser($keyword: String, $pcursor: String, $searchSessionId: String) {\n  visionSearchUser(keyword: $keyword, pcursor: $pcursor, searchSessionId: $searchSessionId) {\n    result\n    users {\n      fansCount\n      photoCount\n      isFollowing\n      user_id\n      headurl\n      user_text\n      user_name\n      verified\n      verifiedDetail {\n        description\n        iconType\n        newVerified\n        musicCompany\n        type\n        __typename\n      }\n      __typename\n    }\n    searchSessionId\n    pcursor\n    __typename\n  }\n}\n"
}

将这些数据转换为json格式，用requests.post的方法把数据传参进去，再返回json数据。

payload_data = json.dumps(payload)
resp = requests.post(url, data=payload_data, headers=headers).json()

将返回的数据做整理。

完整代码展示

import requests
import json
headers={
    'User-Agent':'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.141 Safari/537.36',
    'cookie': ,#自行输入cookie
    'content-type': 'application/json',
}
searchapi = 'https://www.kuaishou.com/search/author?searchKey='
search_id = input('请输入快手ID：')
url = 'https://www.kuaishou.com/graphql'
payload = {"operationName": "graphqlSearchUser",
           "variables": {"keyword":search_id},
           "query": "query graphqlSearchUser($keyword: String, $pcursor: String, $searchSessionId: String) {\n  visionSearchUser(keyword: $keyword, pcursor: $pcursor, searchSessionId: $searchSessionId) {\n    result\n    users {\n      fansCount\n      photoCount\n      isFollowing\n      user_id\n      headurl\n      user_text\n      user_name\n      verified\n      verifiedDetail {\n        description\n        iconType\n        newVerified\n        musicCompany\n        type\n        __typename\n      }\n      __typename\n    }\n    searchSessionId\n    pcursor\n    __typename\n  }\n}\n"
}
payload_data = json.dumps(payload)
resp = requests.post(url, data=payload_data, headers=headers).json()
#print(resp)
uid = resp['data']['visionSearchUser']['users'][0]['user_id']
name = resp['data']['visionSearchUser']['users'][0]['user_name']
user_data = resp['data']['visionSearchUser']['users'][0]
#print(url_id, name)

def verified():
    verified = user_data['verified']
    if verified == 'true':
            return (user_data['verifiedDetail']['description'])
    else:
            return ('无')
def user_text():
    user_text = user_data['user_text']
    if user_text == '':
        return '暂无签名'
    else:
        return user_text

gourl = 'https://www.kuaishou.com/profile/' + uid
payload_2 = {"operationName":"visionProfile",
             "variables":{"userId":uid},
             "query":"query visionProfile($userId: String) {\n  visionProfile(userId: $userId) {\n    result\n    hostName\n    userProfile {\n      ownerCount {\n        fan\n        photo\n        follow\n        photo_public\n        __typename\n      }\n      profile {\n        gender\n        user_name\n        user_id\n        headurl\n        user_text\n        user_profile_bg_url\n        __typename\n      }\n      isFollowing\n      __typename\n    }\n    __typename\n  }\n}\n"
    }
payload_2_data = json.dumps(payload_2)
resp_2 = requests.post(url, data=payload_2_data, headers=headers).json()
#print(resp_2)
userProfile = resp_2['data']['visionProfile']['userProfile']

def gender():
    gender = userProfile['profile']['gender']
    if gender == 'M':
        return ('男')
    if gender == 'F':
        return ('女')
data = {
    '用户ID': uid,
    '昵称': name,
    '性别': gender(),
    '签名': user_text(),
    '作品': userProfile['ownerCount']['photo_public'],
    '粉丝': userProfile['ownerCount']['fan'],
    '关注': userProfile['ownerCount']['follow'],
    '认证': verified(),
    '头像': userProfile['profile']['headurl'],
}
print(data)
return data