How to iterate over all request headers in webapp RequestHandler using python?

Question

I need to iterate over all request header objects and print it in App Engine. I get error when trying to use for cycle. How to do that correctly?

class MainHandler(webapp.RequestHandler):
    def get(self):
        for e in self.request.headers:
            self.request.headers(e + "<br />")

I get error: AttributeError: EnvironHeaders instance has no __call__ method

Ramzi Khahil · Accepted Answer · 2012-05-09 16:47:12Z

9

Error is in self.request.headers(e + "<br />") line. You are trying to call the request.headers method.

I check the online help and found that self.request.headers is dict like object. You can check in https://developers.google.com/appengine/docs/python/gettingstarted/usingwebapp

To iterate over the headers you can use self.request.headers.items() or self.request.headers.keys()

Ramzi Khahil

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answered Feb 10, 2012 at 10:33

NPatel

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Comments

Fred Sauer · Accepted Answer · 2012-10-26 20:16:13Z

3

I think you mean self.response.write():

class MainHandler(webapp.RequestHandler):
    def get(self):
        for e in self.request.headers:
            self.response.write(e + "<br />")

answered Oct 26, 2012 at 20:16

Fred Sauer

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