CODEWITHSUNDEEP
pythonpython-2.7packagepython-import
Sebastian
Sebastian

Reputation: 1438

"import numpy" tries to load my own package

I have a python (2.7) project containing my own packages util and operator (and so forth).

I read about relative imports, but perhaps I didn't understand. I have the following directory structure:

top-dir/
  util/__init__.py (empty)
  util/ua.py
  util/ub.py
  operator/__init__.py 
   ...

  test/test1.py

The test1.py file contains

#!/usr/bin/env python2
from __future__ import absolute_import # removing this line dosn't change anything. It's default functionality in python2.7 I guess
import numpy as np

It's fine when I execute test1.py inside the test/ folder. But when I move to the top-dir/ the import numpy wants to include my own util package:

Traceback (most recent call last):
  File "tests/laplace_2d_square.py", line 4, in <module>
    import numpy as np
  File "/usr/lib/python2.7/site-packages/numpy/__init__.py", line 137, in <module>
    import add_newdocs
  File "/usr/lib/python2.7/site-packages/numpy/add_newdocs.py", line 9, in <module>
    from numpy.lib import add_newdoc
  File "/usr/lib/python2.7/site-packages/numpy/lib/__init__.py", line 4, in <module>
    from type_check import *
  File "/usr/lib/python2.7/site-packages/numpy/lib/type_check.py", line 8, in <module>
    import numpy.core.numeric as _nx
  File "/usr/lib/python2.7/site-packages/numpy/core/__init__.py", line 45, in <module>
    from numpy.testing import Tester
  File "/usr/lib/python2.7/site-packages/numpy/testing/__init__.py", line 8, in <module>
    from unittest import TestCase
  File "/usr/lib/python2.7/unittest/__init__.py", line 58, in <module>
    from .result import TestResult
  File "/usr/lib/python2.7/unittest/result.py", line 9, in <module>
    from . import util
  File "/usr/lib/python2.7/unittest/util.py", line 2, in <module>
    from collections import namedtuple, OrderedDict
  File "/usr/lib/python2.7/collections.py", line 9, in <module>
    from operator import itemgetter as _itemgetter, eq as _eq
ImportError: cannot import name itemgetter

The troublesome line is either

    from . import util

or perhaps

    from operator import itemgetter as _itemgetter, eq as _eq

What can I do?

Upvotes: 1

Views: 417

Answers (1)

silvado
silvado

Reputation: 18187

operator is a module within the Python standard library. Giving a module of yours the same name as a standard module calls for trouble, and should be avoided.

If you absolutely need a way to get around this, you could try playing with the sys.path variable. The first element is usually the directory of the script, or the empty string which directs the import system to the current directory.

oldpath = sys.path.pop(0)
import numpy
sys.path.insert(0, oldpath)

Upvotes: 1

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