如何在python中获取已解析查询字符串的值？

Question

querystring = cgi.parse_qs(decrypted_qs)

self.response.out.write(querystring) #output: {'param2': ['v2'], 'param1': ['v1']}

self.response.out.write(querystring.param2) #AttributeError: 'dict' object has no attribute 'param2'

The original dict: {'param1': 'v1', 'param2': 'v2'}

So why isn't the second one working, what's the right way to access the values?

I'm running Python 2.5.2 on App Engine.

Answer 1

Python dicts don't work like JavaScript dicts. You need to use it the same way you access elements in a list:

querystring['param2']

Answer 2

Don't attempt to extract query string parameters yourself in the first place - use your framework. If you're using webapp, you can access query string parameters through the dict self.request.GET .