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Python: errors loading numpy and matplotlib

This is an odd problem. I have Python script which imports numpy and matplotlib.
If I put those scripts into /usr/local/bin, I can load the modules and run my scripts with no problem.
But if I have those scripts in my "work" directory, I get errors.
This is also true if I use python in interactive mode:
$ pwd
/usr/local/bin
$ python
Python 2.7.12 (default, Oct 10 2016, 12:56:26)
[GCC 5.4.0] on cygwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import numpy
>>> import matplotlib
>>>
No problems.
However, if I go to my work directory, I have problems:
$ pwd
/home/Administrator/Documents/Projects/MOCC/rads
$ python
Python 2.7.12 (default, Oct 10 2016, 12:56:26)
[GCC 5.4.0] on cygwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import numpy
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/lib/python2.7/site-packages/numpy/__init__.py", line 170, in <module>
from . import add_newdocs
File "/usr/lib/python2.7/site-packages/numpy/add_newdocs.py", line 13, in <module>
from numpy.lib import add_newdoc
File "/usr/lib/python2.7/site-packages/numpy/lib/__init__.py", line 8, in <module>
from .type_check import *
File "/usr/lib/python2.7/site-packages/numpy/lib/type_check.py", line 11, in <module>
import numpy.core.numeric as _nx
File "/usr/lib/python2.7/site-packages/numpy/core/__init__.py", line 46, in <module>
from numpy.testing import Tester
File "/usr/lib/python2.7/site-packages/numpy/testing/__init__.py", line 13, in <module>
from .utils import *
File "/usr/lib/python2.7/site-packages/numpy/testing/utils.py", line 15, in <module>
from tempfile import mkdtemp
File "/usr/lib/python2.7/tempfile.py", line 32, in <module>
import io as _io
File "/cygdrive/c/Users/Administrator/Documents/Projects/MOCC/rads/io.py", line 63, in <module>
SEEK_CUR = 1
File "/cygdrive/c/Users/Administrator/Documents/Projects/MOCC/rads/io.py", line 58, in main
AttributeError: 'module' object has no attribute 'loadtxt'
This is cygwin on MS Windows.

TensorFlow error: funcsigs module doesn't have signature attribute

I have installed TensorFlow and wanted to check the installation. Here is the interaction with the python console.
Python 2.7.5 (default, Nov 20 2015, 02:00:19)
[GCC 4.8.5 20150623 (Red Hat 4.8.5-4)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import tensorflow as tf
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/home/shehab1/.local/lib/python2.7/site-packages/tensorflow/__init__.py", line 24, in <module>
from tensorflow.python import *
File "/home/shehab1/.local/lib/python2.7/site-packages/tensorflow/python/__init__.py", line 106, in <module>
from tensorflow.python.platform import test
File "/home/shehab1/.local/lib/python2.7/site-packages/tensorflow/python/platform/test.py", line 81, in <module>
import mock # pylint: disable=g-import-not-at-top,unused-import
File "/home/shehab1/.local/lib/python2.7/site-packages/mock/__init__.py", line 2, in <module>
import mock.mock as _mock
File "/home/shehab1/.local/lib/python2.7/site-packages/mock/mock.py", line 81, in <module>
inspectsignature = funcsigs.signature
AttributeError: 'module' object has no attribute 'signature'
>>>
Could anyone please tell what I am doing wrong? Thanks.

As Yaroslav noted, this is most likely from running too old a version of Python, or you don't have the funcsigs package installed. For the latter, try pip install funcsigs

Cannot import PYMC

When I try to import PYMC installed with pip, enpgk or the canopy GUI package manager, I tried all of them and without success.
Enthought Canopy Python 2.7.9 | 64-bit | (default, Jun 30 2015, 22:40:22)
[GCC 4.1.2 20080704 (Red Hat 4.1.2-55)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import pymc
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/home/renanpc/Enthought/Canopy_64bit/User/lib/python2.7/site-packages/pymc/__init__.py", line 30, in <module>
from .CommonDeterministics import *
File "/home/renanpc/Enthought/Canopy_64bit/User/lib/python2.7/site-packages/pymc/CommonDeterministics.py", line 21, in <module>
from .utils import safe_len, stukel_logit, stukel_invlogit, logit, invlogit, value, find_element
File "/home/renanpc/Enthought/Canopy_64bit/User/lib/python2.7/site-packages/pymc/utils.py", line 14, in <module>
from . import flib
ImportError: libgfortran.so.1: cannot open shared object file: No such file or directory
I tried to install GFORTRAN with :
~$ sudo apt-get install gfortran-4.6
but I still get the same error.
(there are other questions very similar indeed, but usually the answer has to do with Anaconda and I'm using Canopy)
Any idea of what is going on ? I can import other packages.

Managed to break my venv; is it possible to fix?

I managed to break one of my virtual environments. I think I did it by installing pycrypto with pip and uninstalling it with easy_install.
This is what I get when I run python in the venv.
filip#dratmac:~/PycharmProjects/Project-Marketplace2/backend/odb/helper_objects$ python
Traceback (most recent call last):
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site.py", line 62, in <module>
import os
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/os.py", line 49, in <module>
import posixpath as path
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/posixpath.py", line 17, in <module>
import warnings
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/warnings.py", line 8, in <module>
import types
File "types.py", line 1, in <module>
import json
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/json/__init__.py", line 108, in <module>
from .decoder import JSONDecoder
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/json/decoder.py", line 3, in <module>
import re
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/re.py", line 280, in <module>
import copy_reg
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/copy_reg.py", line 7, in <module>
from types import ClassType as _ClassType
ImportError: cannot import name ClassType
filip#dratmac:~/PycharmProjects/Project-Marketplace2/backend/odb/helper_objects$
And outside the venv everything works as expected:
Last login: Tue Apr 7 22:30:08 on ttys005
filip#dratmac:~$ python
Python 2.7.6 (default, Sep 9 2014, 15:04:36)
[GCC 4.2.1 Compatible Apple LLVM 6.0 (clang-600.0.39)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>>
How can I fix this?

You should not name your file types.py as there is a standard library module with the same name (import types).
As such, Python tries to import it as part of some standard library code but it now actually imports your local types.py file, not the module it expects.
So the problem should be fixed when you rename types.py to something else.

virtualenv bug?

I am trying to run the following script in my virtualenv:
(python2.7.2-gonvaled1)gonvaled#lycaon:~/.virtualenvs/python2.7.2-gonvaled1$ couchy.py
Traceback (most recent call last):
File "/home/gonvaled/projects/bin/couchy.py", line 46, in <module>
from couchdb_support import CouchdbLists
File "/home/gonvaled/projects/test_project/python_modules/couchdb_support.py", line 3615, in <module>
from asterisk_support import AsteriskSupport
File "/home/gonvaled/projects/test_project/python_modules/asterisk_support.py", line 4, in <module>
from starpy_support import AmiCommand
File "/home/gonvaled/projects/test_project/python_modules/starpy_support.py", line 7, in <module>
from starpy import manager, fastagi, utilapplication, menu
File "/usr/lib/python2.5/site-packages/starpy/utilapplication.py", line 2, in <module>
from basicproperty import common, propertied, basic, weak
File "/usr/lib/python2.5/site-packages/basicproperty-0.6.12a-py2.5-linux-i686.egg/basicproperty/common.py", line 159, in <module>
from basictypes import datedatetime_types as ddt
File "/usr/lib/python2.5/site-packages/basicproperty-0.6.12a-py2.5-linux-i686.egg/basictypes/datedatetime_types.py", line 4, in <module>
from dateutil import parser
File "/usr/lib/python2.5/site-packages/python_dateutil-2.1-py2.5.egg/dateutil/parser.py", line 8
from __future__ import unicode_literals
SyntaxError: future feature unicode_literals is not defined
So somehow python is trying to import from:
/usr/lib/python2.5/site-packages/starpy/utilapplication.py
This does not make any sense. My virtualenv is very clean:
(python2.7.2-gonvaled1)gonvaled#lycaon:~/.virtualenvs/python2.7.2-gonvaled1$ python
Python 2.7.2 (default, Mar 29 2012, 00:31:29)
[GCC 4.2.4 (Ubuntu 4.2.4-1ubuntu4)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import sys
>>> sys.path
['', '/home/gonvaled/.virtualenvs/python2.7.2-gonvaled1/lib/python2.7/site-packages/setuptools-0.6c11-py2.7.egg', '/home/gonvaled/.virtualenvs/python2.7.2-gonvaled1/lib/python2.7/site-packages/pip-1.1-py2.7.egg', '/home/gonvaled/.virtualenvs/python2.7.2-gonvaled1/lib/python2.7/site-packages/Twisted-12.0.0-py2.7-linux-i686.egg', '/home/gonvaled/.virtualenvs/python2.7.2-gonvaled1/lib/python2.7/site-packages/zope.interface-3.8.0-py2.7-linux-i686.egg', '/home/gonvaled/.virtualenvs/python2.7.2-gonvaled1/lib/python2.7/site-packages/basicproperty-0.6.12a-py2.7-linux-i686.egg', '/home/gonvaled/projects/gonvaled_settings', '/home/gonvaled/django_apps', '/home/gonvaled/projects/test_project/ipc', '/home/gonvaled/projects/test_project/python_modules', '/home/gonvaled/projects/test_project/gdata', '/home/gonvaled/projects/callisto/libraries', '/home/gonvaled/.virtualenvs/python2.7.2-gonvaled1', '/home/gonvaled/.virtualenvs/python2.7.2-gonvaled1/lib/python27.zip', '/home/gonvaled/.virtualenvs/python2.7.2-gonvaled1/lib/python2.7', '/home/gonvaled/.virtualenvs/python2.7.2-gonvaled1/lib/python2.7/plat-linux2', '/home/gonvaled/.virtualenvs/python2.7.2-gonvaled1/lib/python2.7/lib-tk', '/home/gonvaled/.virtualenvs/python2.7.2-gonvaled1/lib/python2.7/lib-old', '/home/gonvaled/.virtualenvs/python2.7.2-gonvaled1/lib/python2.7/lib-dynload', '/usr/local/python/2.7.2/lib/python2.7', '/usr/local/python/2.7.2/lib/python2.7/plat-linux2', '/usr/local/python/2.7.2/lib/python2.7/lib-tk', '/home/gonvaled/.virtualenvs/python2.7.2-gonvaled1/lib/python2.7/site-packages']
And:
(python2.7.2-gonvaled1)gonvaled#lycaon:~/.virtualenvs/python2.7.2-gonvaled1$ pip freeze
CouchDB==0.9dev
DateUtils==0.5.1
Twisted==12.0.0
basicproperty==0.6.12a
pystache==0.4.0
python-dateutil==2.1
pytz==2012b
simplejson==2.4.0
six==1.1.0
starpy==1.0.0a12
wsgiref==0.1.2
zope.interface==3.8.0
So to summarize: python is importing from /usr/lib/python2.5/site-packages even though I am inside a virtualenv. How can this be?

Try running the script as:
$ python couch.py
in your activated virtualenv. Depending on your system and the first line (the shebang line) of the file, you may not be running in the Python you think you are.

You should create your virtualenv with the --nositepackages option to keep it clean and away from your system Python.