[已解决]python3里f.write(b)使用 b = x.encode( "utf-8")

yusaku

这是一个按照视频做的爬虫练习- - 尝试爬拉勾网的求职信息 但原视频是使用的python2  我是用的是python3 于是出现了下面的情况
write()里必须是str 但是 encode编码后为bytes 然后报错l 百度出现类似的说明http://www.cnblogs.com/hanggegege/p/5840005.html
但是看不懂 求救  python3该怎么改呢?

1. # encoding: utf-8
   
2. # pip3 install bs4
   
3. # pip3 intsall requests
   
4. # sudo pip3 install xxx
   
5. # 显示当前所有安装的库
   
6. # pip list
   
7. 
   
8. import requests
   
9. from bs4 import BeautifulSoup
   
10. import json
    
11. 
    
12. def main():
    
13.     headers = {
    
14.         'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/62.0.3202.62 Safari/537.36',
    
15.         'Cookie': 'user_trace_token=20171028110334-96317315-bb8c-11e7-962e-5254005c3644; LGUID=20171028110334-96317855-bb8c-11e7-962e-5254005c3644; index_location_city=%E6%B7%B1%E5%9C%B3; JSESSIONID=ABAAABAAAFCAAEG178DA4AF4CD86818F87812194843D5A7; _gid=GA1.2.669902856.1510057188; _ga=GA1.2.1027913977.1509159816; Hm_lvt_4233e74dff0ae5bd0a3d81c6ccf756e6=1509159816,1510057188; Hm_lpvt_4233e74dff0ae5bd0a3d81c6ccf756e6=1510057738; LGRID=20171107202908-402119c7-c3b7-11e7-bf5b-525400f775ce; TG-TRACK-CODE=search_code; SEARCH_ID=c79302cb118a421488b5fafeecc17174',
    
16.         'Origin': 'https://www.lagou.com',
    
17.         'Host': 'www.lagou.com',
    
18.         'Referer': 'https://www.lagou.com/jobs/list_python?city=%E6%B7%B1%E5%9C%B3&cl=false&fromSearch=true&labelWords=sug&suginput=python',
    
19.         'X-Anit-Forge-Code': '0',
    
20.         'X-Anit-Forge-Token': 'None',
    
21.         'X-Requested-With': 'XMLHttpRequest'
    
22.     }
    
23.     form_data = {
    
24.         'first': 'true',
    
25.         'pn': '1',
    
26.         'kd': 'python'
    
27.     }
    
28.     result = requests.post('https://www.lagou.com/jobs/positionAjax.json?city=%E6%B7%B1%E5%9C%B3&needAddtionalResult=false&isSchoolJob=0',headers = headers,data = form_data)
    
29.     json_result = result.json()
    
30.     positions = json_result['content']['positionResult']['result']
    
31.     line = json.dumps(positions,ensure_ascii=False)
    
32.     with open('lagou.json','w') as fp:
    
33.         fp.write(line.encode('utf-8'))
    
34. 
    
35. if __name__== '__main__':
    
36.     main()
    
37. 
    
38. 
    
39. 
    
40. 运行后错误
    
41. Traceback (most recent call last):
    
42.   File "E:/python_study/lagou/spider.py", line 47, in <module>
    
43.     main()
    
44.   File "E:/python_study/lagou/spider.py", line 43, in main
    
45.     fp.write(line.encode('utf-8'))
    
46. TypeError: write() argument must be str, not bytes
    

复制代码

最佳答案

月排行榜 / 总排行榜

、尾指一勾

2017-11-8 10:34:26

with open("123.txt", 'w', encoding='utf-8') as f:
    f.write("1234578521")

跳转到最佳答案楼层

yusaku

上面链接百度出的类似教程

BngThea

先依葫芦画瓢，将那句改为fp.write(line.encode("gbk"))

、尾指一勾

with open("123.txt", 'w', encoding='utf-8') as f:
    f.write("1234578521")

yusaku

BngThea 发表于 2017-11-8 08:25
先依葫芦画瓢，将那句改为fp.write(line.encode("gbk"))

试过了 不行- - 只要是encode()就是bytes

yusaku

、尾指一勾 发表于 2017-11-8 10:34
with open("123.txt", 'w', encoding='utf-8') as f:
    f.write("1234578521")

膜拜 感谢大神