8

I'm trying to learn python and I'm having trouble importing a module. I have a .pyc file that I'm trying to import into idle shell called dfa.pyc

I have the file in a folder called xyz. I navigate to this folder using:

    os.chdir('/Users/xxx/Desktop/xyz')

So now, if I try to run the command:

    from dfa import *

i get the error: 

    ImportError: No module named dfa

If i run the command: 

    os.path.isfile('dfa.pyc')

it returns true.

Can someone explain how i can get the dfa.pyc file imported?

Thanks

android_student
  • 1,246
  • 1
  • 13
  • 32
  • 1
    What's the value of `sys.path`? – David Z Nov 01 '11 at 19:28
  • ['/Users/xxx/Documents', '/Library/Frameworks/Python.framework/Versions/3.2/lib/python32.zip', '/Library/Frameworks/Python.framework/Versions/3.2/lib/python3.2', '/Library/Frameworks/Python.framework/Versions/3.2/lib/python3.2/plat-darwin', '/Library/Frameworks/Python.framework/Versions/3.2/lib/python3.2/lib-dynload', '/Library/Frameworks/Python.framework/Versions/3.2/lib/python3.2/site-packages'] Is this what you're asking for? That's the value i get if i run the sys.path command. THanks – android_student Nov 01 '11 at 19:37
  • http://stackoverflow.com/questions/279237/python-import-a-module-from-a-folder, try these suggestions? – John Nov 01 '11 at 19:42

3 Answers3

10

I don't think python modules are loaded I based on what you do with chdir. Modules are loaded from the folder you started the python shell and folders in PYTHONPATH.

If you want dynamically load modules maybe you can check imp.loadmodule (sample in the bottom of the page).

Lycha
  • 9,937
  • 3
  • 38
  • 43
9

you can add to the PYTHONPATH in code by doing 

sys.path.append('<newpath'>)
from dfa import *

I don't believe changing your current directory has any impact on the import process and even if it did, I'm not sure that's how you would want to do it.

Jeffery Smith
  • 209
  • 2
  • 5
-1

from Brian Fitzgerald in Loading (and unloading) Python modules

" ... and this to “un-import”

del sys.modules["package"]
del package

"

WillC
  • 957
  • 16
  • 19