add code

Author: itdoudoutech

doudou/2021-02-08-mitmproxy/script-01.py

@@ -0,0 +1,3 @@
+def request(flow):
+    print('request url is %s' % flow.request.url)
+    flow.request.url = 'http://cn.bing.com'

doudou/2021-02-08-mitmproxy/script-02.py

@@ -0,0 +1,5 @@
+def response(flow):
+    text = flow.response.get_text()
+    for str in ['自学 Python', '自学Python', '自学 python', '自学python']:
+        text = text.replace(str, '自学 Python，请关注「Python 技术」公众号')
+    flow.response.set_text(text)

doudou/README.md

@@ -23,6 +23,7 @@ Python技术 公众号文章代码库
 ### 2021 代码列表
 + [GitHub-Top10](https://github.com/JustDoPython/python-examples/tree/master/doudou/2021-01-02-GitHub-Python-Top10)：2020 GitHub Python 库 TOP10
 + [fake-data](https://github.com/JustDoPython/python-examples/tree/master/doudou/2021-01-10-fake-data)：假数据
++ [mitmproxy](https://github.com/JustDoPython/python-examples/tree/master/doudou/2021-02-08-mitmproxy)：中间人攻击
 
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