CODEWITHSUNDEEP
python
A.R.
A.R.

Reputation: 2068

ImportError: No module named _____

There are many questions with slight variations of this problem in SO. None of the answers I've seen solve my problem, so I'm asking a new question.

I have this folder structure:

/myapp/
   \__init__.py
    modu1.py
    modu2.py

__init__.py is empty

modu1.py

class TestMod1Class():
    def msg(self):
        print "Hello World!"

modu2.py

import myapp.modu1 

obj = myapp.modu1.TestMod1Class()
obj.msg()

If from the directory /myapp/ I run python modu2.py i get:

Traceback (most recent call last):
  File "modu2.py", line 1, in <module>
    import myapp.modu1
ImportError: No module named myapp.modu1



What I'm I doing wrong? I've read the docs, and still can't make sense of this.

Upvotes: 1

Views: 1558

Answers (2)

poke
poke

Reputation: 388253

If from the directory /myapp/ I run python modu2.py i get

If you run a module directly, it does not run as part of a package it might belong to. As such importing myapp.modu1 will look for myapp/myapp/modu1.py, which is obviously not where it is.

If you want the myapp package to work, you have to start the execution from within the root directory. So add a main.py next to the myapp folder:

/main.py
/myapp
    /__init__.py
    /modu1.py
    /modu2.py

And from there, you can do:

import myapp.modu2

And then you have to start with python main.py.

Upvotes: 2

J David Smith
J David Smith

Reputation: 4810

You are already within the myapp module by being in the myapp folder. Therefore, you do not need to use the import myapp.modu1 syntax and instead should use import modu1.

For example:

import modu1

obj = modu1.TestMod1Class()
obj.msg() # output: Hello World!

Note: I tested in Python 3 because I don't have 2 on my machine, but it should be the same (I did edit modu1 to use the new print syntax).

Upvotes: 5

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