unable to import function in django/python

Question

I am writing a django project with follwing files:

ttam_container
    -utils.py
    -ttam
         -views.py

Codes within utils.py module:

def random_string():
    ...
def remove_blanks():
    ...


...other functions...

Codes within views.py:

from utils import *

def get_sequences(request):
      ...
    string = random_string()
      ...
    sequences = remove_blanks(sequences_with_blanks)
      ...

The error global name remove_blanks' is not defined is then reported. I thought I didn't import the utils.py correcty in the first place, but the random_string works...

Any idea what's happening?

Ensure that each package has a __init__.py file as well

dm03514
– dm03514

2013-04-17 23:52:13 +00:00
Commented Apr 17, 2013 at 23:52 — dm03514
– dm03514, Commented Apr 17, 2013 at 23:52
i did have... didn't show it here

Yishen Chen
– Yishen Chen

2013-04-18 00:06:49 +00:00
Commented Apr 18, 2013 at 0:06 — Yishen Chen
– Yishen Chen, Commented Apr 18, 2013 at 0:06

diegueus9 · Accepted Answer · 2013-04-17 21:40:34Z

2

The import should be:

from utils import remove_blanks

without .py

answered Apr 17, 2013 at 21:40

diegueus9

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2 Comments

Silas Ray Over a year ago

And also without the wildcard. :) +1

Yishen Chen Over a year ago

also, when i try to wrote it as from utils import remove_blanks, ImportError is reported

Mike DeSimone · Accepted Answer · 2013-04-18 00:19:15Z

The correct import would be:

import sys
sys.path.append("..")
from utils import random_string, remove_blanks

Modules must be in one of the directories in sys.path. This is initialized to the value of $PYTHONPATH, or some default if $PYTHONPATH is not set. For example:

$ python
Python 2.6.5 (r265:79063, Jun 12 2010, 17:07:01)
[GCC 4.3.4 20090804 (release) 1] on cygwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import sys
>>> sys.path
['', '/usr/lib/python26.zip', '/usr/lib/python2.6', '/usr/lib/python2.6/plat-cyg
win', '/usr/lib/python2.6/lib-tk', '/usr/lib/python2.6/lib-old', '/usr/lib/pytho
n2.6/lib-dynload', '/usr/lib/python2.6/site-packages']

So if your module isn't in that path, you need to append the right path ('..' in this case) to sys.path.

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