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Python

Lior Dolinski
Lior Dolinski
3,905 Points
Posted by Lior Dolinski
Lior Dolinski
3,905 Points

__init__.py isn't doing his job..

everytime i make a certain project i put an init.py file in the folder so python could find my module. But, when i import the file in the console, it tells me the module cant be found..

in that case i use sys.path.insert and manually insert my folder's path to the directory list..

what could be the problem? why is python not automatically know where my files are?

Thanks

Chris Freeman
Chris Freeman
Treehouse Moderator 68,423 Points
Chris Freeman
Chris Freeman
Treehouse Moderator 68,423 Points

Can you please provide more information:

  • Are you running in a local window or in the workspaces console window?
  • What is the file structure (perhaps post the output of ls -R)?
  • In which directory are you starting the python shell?
  • How are you invoking the python shell?
  • What command are you typing (perhaps post a long of the python shell session)?

Thanks!

Lior Dolinski
Lior Dolinski
3,905 Points
Lior Dolinski
Lior Dolinski
3,905 Points

Chris Freeman Im running in a local window (my regular shell) the python shell starts in C:\Python34

lets say i create a new folder on my desktop, i put an init.py file in her, and then i create a simple file with one class in it which i name 'lior'

class Lior():
    def __init__(self):
        self.s = ""

    def getString(self):
        self.s = raw_input()

i save the file and i type in the console: from lior import Lior

and it tells my the module doesn't exist.. python simply doesnt know that there are python files out there to be found...

any clues?

thanks!

1 Answer

Iain Simmons
Iain Simmons
Treehouse Moderator 32,305 Points

Firstly, you would need to run the import statement from one directory up from the new one you created.

Second, if you create an __init__.py file in a directory, it makes that directory a package. Any other files in that directory will be available by their file name, in addition to any methods or other 'names' in the __init__.py file itself.

So, if your structure is as follows:

Desktop
|-- app.py
|-- package
    |-- __init__.py
    |-- lior.py

Then in app.py you could use the following:

app.py 
from package import lior

lior.Lior()

Or:

app.py 
from package.lior import Lior

Lior()

Or if you don't use the lior.py file, and instead change the package directory to be named lior and put the Lior class in the __init__.py file, then you can use:

app.py 
from lior import Lior

Lior()