烧瓶冻结，但烧瓶没问题

Question

I have a website using Flask. The main program is pretty long, so I've used a paste to show you the code. When I run it with ./site serve --debug it works perfectly, but I can't freeze it with Flask-frozen. I have this error :

$ ./site build                       
Building website...
./site:240: MimetypeMismatchWarning: Filename extension of u'sitemap.xml' (type application/xml) does not match Content-Type: text/html; charset=utf-8
  freezer.freeze()
Traceback (most recent call last):
  File "./site", line 346, in <module>
    parser.dispatch()
  File "/home/guillaume/nicolas.perriault.net/env/lib/python2.7/site-packages/argh/helpers.py", line 53, in dispatch
    return dispatch(self, *args, **kwargs)
  File "/home/guillaume/nicolas.perriault.net/env/lib/python2.7/site-packages/argh/dispatching.py", line 123, in dispatch
    for line in lines:
  File "/home/guillaume/nicolas.perriault.net/env/lib/python2.7/site-packages/argh/dispatching.py", line 199, in _execute_command
    for line in result:
  File "/home/guillaume/nicolas.perriault.net/env/lib/python2.7/site-packages/argh/dispatching.py", line 182, in _call
    result = args.function(*positional, **keywords)
  File "./site", line 240, in build
    freezer.freeze()
  File "/home/guillaume/nicolas.perriault.net/env/lib/python2.7/site-packages/flask_frozen/__init__.py", line 140, in freeze
    new_filename = self._build_one(url)
  File "/home/guillaume/nicolas.perriault.net/env/lib/python2.7/site-packages/flask_frozen/__init__.py", line 250, in _build_one
    % (response.status, url))
ValueError: Unexpected status '500 INTERNAL SERVER ERROR' on URL /403.html

If I delete the part about 403.html in site.py, I have the same error with 404, then 500, then contact.html, then /. And I can't find why. Is there anybody who has an idea ?

Answer 1

Enable testing while freezing your application. It should produce more information about error.

@command
def build():
    """ Builds this site.
    """
    print("Building website...")
    app.debug = False
    app.testing = True
    asset_manager.config['ASSETS_DEBUG'] = False
    freezer.freeze()
    local("cp ./static/*.ico ./build/")
    local("cp ./static/*.txt ./build/")
    local("cp ./static/*.xml ./build/")
    print("Done.")

Frozen-flask uses app.test_client() look at it's docs .