CODEWITHSUNDEEP
pythondjangonameerror
Danae Vogiatzi
Danae Vogiatzi

Reputation: 188

Django import code from other apps

I have a project whith multiple apps. So when I want some code from another app I use 

from app.pyfile import *

or

from app.pyfile import specific_function

To be more specific: I have an app called 'commonapp' where I have some common stuff that I use in all the other apps. In this app I have a common.py file where I have some functions, including a function called my_response(request,template,context) ,which is the one causes a NameError. Now this particular function is always being called inside other functions.

for example:

from commonapp.common import *

def myInfo(request):
    context = {}
    data = ''
    data =  SomeModel.objects.all()
    template = 'path/to/info.html'
    context['data'] = data
    a = my_response(request,template,context)
    return a

This raises a NameError "global name my_response is not defined"

I know what a NameError is, but why here? I would expect an ImportError if something could not be imported or even "global name a is not defined" .

What am I missing here?

UPDATE:

Here is a screenshot showing where the my_response(request,template,context) is and the file structure of the app.

enter image description here

Upvotes: 0

Views: 2069

Answers (1)

Zaur Nasibov
Zaur Nasibov

Reputation: 22679

When you do 

from commonapp.common import *

everything that can be imported from the package is imported into current global namespace. Apparently my_response is not imported (for some reason). So, you get NameError, because my_response is resolved at point of it's execution, i.e. in

# Python tries to lookup `my_response` in local and then global context
# But, it can't find it, thus NameError exception occurs. 
a = my_response(request,template,context)

And ImportErrors are generally raised by importing routines e.g from package import non_existing_function and are not encountered in other context.

Upvotes: 2

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