Develop Reference

Pandas import error on older Numpy version on Raspbian

On a fresh install of Raspbian 10 on Raspberry PI 3 B+, I am trying to install with Python 3.7 the numpy==1.19.5. The problem is that when I import pandas, I get this error:
pi#raspberrypi:~ $ python3
Python 3.7.3 (default, Jul 25 2020, 13:03:44)
[GCC 8.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import pandas
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/home/pi/.local/lib/python3.7/site-packages/pandas/__init__.py", line 29, in <module>
from pandas._libs import hashtable as _hashtable, lib as _lib, tslib as _tslib
File "/home/pi/.local/lib/python3.7/site-packages/pandas/_libs/__init__.py", line 13, in <module>
from pandas._libs.interval import Interval
File "pandas/_libs/interval.pyx", line 1, in init pandas._libs.interval
ValueError: numpy.ndarray size changed, may indicate binary incompatibility. Expected 44 from C header, got 40 from PyObject
If I keep the default installation of numpy==1.20.2, it works perfectly, but I have a requirement for any numpy version less than 1.20. I've tried some versions of pandas, but nothing works. I've hit a dead-end so I am asking here for help.

ciscoconfparse unable to import python3.7 win10

Any new solution for this. I am unable to from ciscoconfparse import CiscoConfParse
I tried several versions of ciscoconfparse in python3 usin gpowershell in windows10.
Python 3.7.0 (v3.7.0:1bf9cc5093, Jun 27 2018, 04:06:47) [MSC v.1914 32 bit (Intel)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> from ciscoconfparse import CiscoConfParse
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "C:\Python3\lib\site-packages\ciscoconfparse\__init__.py", line 1, in <module>
from .ciscoconfparse import *
File "C:\Python3\lib\site-packages\ciscoconfparse\ciscoconfparse.py", line 4018
^
SyntaxError: invalid syntax
I still have not found a version that will let me import the module.
I browsed through several links here..but did not find an answer. The closest issue to mine is:
ciscoconfparse in Python 3.4 module doesn't import correctly
but not answer.
Any new info?
Thanks

I have reproduced the bug where Win10 and Python 3.7.0 cause problems.
FWIW, if you completely uninstall Python 3.7.0 (including manually deleting your Windows installation directory tree), then install Python 3.7.1, you should not have this problem with Windows 10.

Python asyncio '_overlapped' is not imported

Could not import asyncio library in virtualenv.
Python 3.6.4 x32
Win 10 x64
Python 3.6.4 (v3.6.4:d48eceb, Dec 19 2017, 06:04:45) [MSC v.1900 32 bit (Intel)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>>import asyncio
Traceback (most recent call last):
File "C:\Python36\Lib\asyncio\__init__.py", line 16, in <module>
from . import _overlapped
ImportError: cannot import name '_overlapped'
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "C:\Python36\Lib\asyncio\__init__.py", line 18, in <module>
import _overlapped # Will also be exported.
OSError: [WinError 0] The operation completed successfully
There is no module _overlapped in asyncio folder "C:\Python36\Lib\asyncio\". Also I know that asyncio is a part of Python from version 3.4.
What is wrong and what should i do? Could it be due to x64 Win and not x64 Python?

No module named machinery

I am trying to make exe using py2exe in Python. When I import py2exe I am getting error like this:
Python 2.7.6 (default, Nov 10 2013, 19:24:18) [MSC v.1500 32 bit (Intel)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import py2exe
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "C:\Python27\lib\site-packages\py2exe-0.9.2.0-py2.7-win32.egg\py2exe\__init__.py", line 9, in <module>
patch_distutils()
File "C:\Python27\lib\site-packages\py2exe-0.9.2.0-py2.7-win32.egg\py2exe\patch_distutils.py", line 68, in patch_distutils
from . import distutils_buildexe
File "C:\Python27\lib\site-packages\py2exe-0.9.2.0-py2.7-win32.egg\py2exe\distutils_buildexe.py", line 91, in <module>
from . import runtime
File "C:\Python27\lib\site-packages\py2exe-0.9.2.0-py2.7-win32.egg\py2exe\runtime.py", line 3, in <module>
from .dllfinder import Scanner, pydll
File "C:\Python27\lib\site-packages\py2exe-0.9.2.0-py2.7-win32.egg\py2exe\dllfinder.py", line 7, in <module>
from importlib.machinery import EXTENSION_SUFFIXES
ImportError: No module named machinery
Can any body help me fixing this out. I am not getting machinery module any where.

I just ran into this myself. I had installed 0.9 from pypi as well. If you look at the pypi page here py2exe on pypi, you'll see that the download only supports Python 3.3 and later and you should use the 0.6 download from here. I deleted the 0.9 egg after installing 0.6 and it worked after that.

I had same issue, because i had version py2exe0.9 and it is not supported for python2.7.
I downloaded lower version from here http://sourceforge.net/projects/py2exe/files/py2exe/0.6.9/py2exe-0.6.9.win32-py2.7.exe/download
and it works.

How come Pylons is not recognized when I run 'import pylons' in Windows Vista command prompt?

When I try to import pylons in the virtual python environment I get the error
C:\env\Scripts>python
Python 2.7 (r27:82525, Jul 4 2010, 07:43:08) [MSC v.1500 64 bit (A
MD64)] on win32
Type "help", "copyright", "credits" or "license" for more informati
on.
>>> import pylons
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "C:\env\lib\site-packages\pylons-1.0-py2.7.egg\pylons\__init
__.py", line 6, in <module>
from paste.registry import StackedObjectProxy
ImportError: No module named registry
As I understand this error, Python is telling me that it can not find the module named registry. Perhaps this is a result of the error I got while installing Pylons which is explained over here Why do I get an error on the last line of installing Pylons 1.0 with easy_install and Python 2.7 in Windows Vista 64?
It seems that many of the Pylon components were installed but I guess registry was not or maybe Pylons just can not see it.
Any ideas on how to solve this?

You have to activate the virtual environment before you can import pylons.
C:\Users\Josh>env\scripts\activate
(env) C:\Users\Josh>python
ActivePython 2.6.2.2 (ActiveState Software Inc.) based on
Python 2.6.2 (r262:71600, Apr 21 2009, 15:05:37) [MSC v.1500 32 bit (Intel)] on
win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import pylons
>>>
vs. this
C:\Users\Josh\env\Scripts>python
ActivePython 2.6.2.2 (ActiveState Software Inc.) based on
Python 2.6.2 (r262:71600, Apr 21 2009, 15:05:37) [MSC v.1500 32 bit (Intel)] on
win32
Type "help", "copyright", "credits" or "license" for more information.
>>> pylons
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
NameError: name 'pylons' is not defined
>>>
I guessing that you have the pylons package installed outside and inside your virtual environment. So python is letting you import pylons but the paste package is not installed outside of your virtual environment so you are getting an error.
Running the activate batch script (should be inside your env\Scripts folder) should solve the problem.