Running python scripts from command line using different python versions defined in anaconda envs - python-3.x

I have 2 python tools that I have to run via the windows cmd line. One is written in python2.7 while the other requires python3.6.
I have installed the newest Anaconda python3.7 version and created two new environments in 'C:\ProgramData\Anaconda3\envs' called 'python27' and 'python36'. For some reason I had to manually install numpy and scipy using conda install -n env_name numpy scipy for each of the new environments.
The reason I have to run both tools using the windows cmd line is that I have integrated them into a workflow environment (RCE by the DLR in case this is relevant), which executes integrated tools in this way. Which means I cannot simply use the Anaconda Prompt instead.
I cannot simply add the python installation to the PATH environment variable because of each tool requiring a different python version (and the file being called 'python.exe' in all versions), so I tried to create aliases for the cmd prompt as suggested by "roryhewitt" in this thread Aliases in Windows command prompt.
my 'python27.bat' file:
#echo off
echo.
C:\ProgramData\Anaconda3\envs\python27\python.exe %*
The problem with this approach is that python encounters an error when trying to import numpy:
>>> import numpy
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "C:\ProgramData\Anaconda3\envs\python27\lib\site-packages\numpy\__init__.py", line 142, in <module>
from . import core
File "C:\ProgramData\Anaconda3\envs\python27\lib\site-packages\numpy\core\__init__.py", line 71, in <module>
raise ImportError(msg)
ImportError:
IMPORTANT: PLEASE READ THIS FOR ADVICE ON HOW TO SOLVE THIS ISSUE!
Importing the multiarray numpy extension module failed. Most
likely you are trying to import a failed build of numpy.
Here is how to proceed:
- If you're working with a numpy git repository, try `git clean -xdf`
(removes all files not under version control) and rebuild numpy.
- If you are simply trying to use the numpy version that you have installed:
your installation is broken - please reinstall numpy.
- If you have already reinstalled and that did not fix the problem, then:
1. Check that you are using the Python you expect (you're using C:\ProgramData\Anaconda3\envs\python27\python.exe),
and that you have no directories in your PATH or PYTHONPATH that can
interfere with the Python and numpy versions you're trying to use.
2. If (1) looks fine, you can open a new issue at
https://github.com/numpy/numpy/issues. Please include details on:
- how you installed Python
- how you installed numpy
- your operating system
- whether or not you have multiple versions of Python installed
- if you built from source, your compiler versions and ideally a build log
Note: this error has many possible causes, so please don't comment on
an existing issue about this - open a new one instead.
Original error was: DLL load failed: The specified module could not be found.
Does anyone know a better way to run python scripts with a specific python environment via the windows cmd line, or what is causing the import error when I use the alias?
TLDR: I have 2 python tools that require python2.7 and python3.6 respectively. I have to run these tools using the windows cmd line and using aliases to the 'python.exe' file in the specific anaconda environments results in an import error of numpy. Is there a better way to handle two python environments via the cmd line or an easy fix for the import error?

It seems that the ImportError when using python2.7 via the alias in the cmd line was due to the anaconda environment not being activated. This caused the module to be unable to load properly.
I have added the conda functionality to be used in the cmd line as instructed in the post by "Simba" here: Conda command is not recognized on Windows 10. This has fixed the numpy ImportError.
I can now execute the desired tools from the cmd line using the correct python version by activating the correct anaconda environment first, and then calling the alias
Example:
C:\Users\user>conda activate python27
(python27) C:\Users\user>python27 main.py

Related

Tensorflow installed can't be imported

I'm trying to import tensorflow. But even after installing it, it doesn't seem to be recognized.
>conda create -n tf tensorflow
>conda activate tf
(tf)>pip install --ignore-installed --upgrade tensorflow==1.15 --user
...
Successfully installed absl-py-0.9.0 astor-0.8.1 gast-0.2.2 google-pasta-0.2.0 grpcio-1.28.1 h5py-2.10.0 keras-applications-1.0.8 keras-preprocessing-1.1.0 markdown-3.2.1 numpy-1.18.2 opt-einsum-3.2.0 protobuf-3.11.3 setuptools-46.1.3 six-1.14.0 tensorboard-1.15.0 tensorflow-1.15.0 tensorflow-estimator-1.15.1 termcolor-1.1.0 werkzeug-1.0.1 wheel-0.34.2 wrapt-1.12.1
(tf) C:\Users\antoi\Documents\Programming\Covent Garden\covent_garden_ds>python3 app.py
Traceback (most recent call last):
File "app.py", line 4, in <module>
from tensorflow.keras.callbacks import ModelCheckpoint
ModuleNotFoundError: No module named 'tensorflow'
Python3 is there:
(tf) C:\Users\antoi\Documents\Programming\Covent Garden\covent_garden_ds>where python3
C:\Users\antoi\AppData\Local\Microsoft\WindowsApps\python3.exe
It's not the one I should be using, isn't it?
What version of Python are you running? In order to both successfully import and run the Tensorflow module, you must have the 64 bit version of Python installed. If you are using the latest version of Python, which to the best of my knowledge is 3.8.2, completely uninstall that version of Python, and downgrade to the latest Python version with 64 bit support.
If you follow the output of pip --version to find where your anaconda files are located, you can find the anaconda python executable, usually about two directory levels higher (if pip is in C:\example\anaconda\lib\site-packages, then python is probably in C:\example\anaconda) and use a full path to that python executable to run the file like C:\example\anaconda\python app.py. Or you could update your path environment variable to replace C:\Users\antoi\AppData\Local\Microsoft\WindowsApps\ with the directory containing the anaconda python executable
I've had this same exact issue (but on macOS) several times before I realized what was wrong, and I've seen several others have this issue too. I wish there was a way Python could somehow better regulate this to make sure the default executables for pip and python are always in sync

How to fix Python script started in CMD get's DLL Error, but runs in Pycharm and Anaconda Comand Promt

I want to run a python script in cmd via a batch file. The script fails with dll loading error for numpy imports. The same python script works in pycharm (2019 Anaconda Version) and in the anaconda command prompt without errors.
For all I use the same anaconda enviorment.
For Error Reproduction
Install Anaconda, don't set any path variables
Create an enviorment stored not in the default folder
conda create --prefix
conda activate
conda install numpy flask
6.Code for testing. test-numpy.py
import numpy as np
print(np.abs([1,2-4,6]))
create batch script
run batch script
Running in cmd a python script that has only system imports or no imports works fine.
Setting the pythonpath Variable in Windows is no option.
What I did so far:
Checking if there is an PATH error:
I printed the sys.path, both via Pycharm and the same python script run via CMD gave the same results: it points to my anaconda enviorment with the folders:
...\ (the enviorment itself)
...\python37.zip
...\DLLs
...\lib
...\lib\site-packages
Edit
Tested in Visual Studio Code, gives same Error as running via cmd
Found out Visual Studio Coda until now, can't handle conda enviorments, that where installed with -p or -prefix and are not stored in the default path
Uninstalled and reinstalled numpy
Tested to import another module: Flask also fails with DDL load error but works fine while run in Pycharm.
Tested on another PC with differnt anaconda version.
Another person could reproduce the same error I get.
My guess is my code fails in cmd, becaust anacona enviorments needs somehow to be activated before hand and doesn't work as a stand alone.
The Error Messeag I get running my script in CMD (... points to my anaconda enviormant path):
...\lib\site-packages\numpy\core__init__.py", line 40, in
from . import multiarray ...\lib\site-packages\numpy\core\multiarray.py", line 12, in
from . import overrides ...\lib\site-packages\numpy\core\overrides.py", line 6, in
from numpy.core._multiarray_umath import ( ImportError: DLL load failed: Das angegebene Modul wurde nicht gefunden.
During handling of the above exception, another exception occurred:
Traceback (most recent call last): "TestNumpy.py", line 14, in
import numpy as np ...\lib\site-packages\numpy__init__.py", line 142, in
from . import core ...\lib\site-packages\n umpy\core__init__.py", line 71, in
raise ImportError(msg) ImportError:
IMPORTANT: PLEASE READ THIS FOR ADVICE ON HOW TO SOLVE THIS ISSUE!
Importing the multiarray numpy extension module failed. Mostlikely
you are trying to import a failed build of numpy. Here is how to
proceed:
- If you're working with a numpy git repository, try git clean -xdf (removes all files not under version control) and rebuild numpy.
- If you are simply trying to use the numpy version that you have installed: your installation is broken - please reinstall numpy.
- If you have already reinstalled and that did not fix the problem, then:
1. Check that you are using the Python you expect
and that you have no directories in your PATH or PYTHONPATH that can
interfere with the Python and numpy versions you're trying to use.
2. If (1) looks fine, you can open a new issue at
https://github.com/numpy/numpy/issues. Please include details on:
- how you installed Python
- how you installed numpy
- your operating system
- whether or not you have multiple versions of Python installed
- if you built from source, your compiler versions and ideally a build log
Note: this error has many possible causes, so please don't comment on
an existing issue about this - open a new one instead.
Original error was: DLL load failed: Das angegebene Modul wurde nicht
gefunden.
I found not other solution it seems like it is needed to really activate the conda enviorment before calling the script via conda:
call <file_path>/Anaconda/Scripts/activate.bat <file_path/Anaconda_enviorment> && python <file_path/pythonscript.py>

Unable to import sqlite3 using Anaconda Python

I am trying to do the following in Python 3.7.1 on Windows
import sqlite3
but I get the following error message
Traceback (most recent call last):
File "<console>", line 1, in <module>
File "c:\programdata\anaconda3\lib\sqlite3\__init__.py", line 23, in <module>
from sqlite3.dbapi2 import *
File "c:\programdata\anaconda3\lib\sqlite3\dbapi2.py", line 27, in <module>
from _sqlite3 import *
ImportError: DLL load failed: The specified module could not be found.
I have searched for a solution to the problem for quite a while now to no avail. I have also successfully run pip install pysqlite3 on the Anaconda prompt, but the import still fails. What do?
I got this working on windows by downloading: the sqlite3 dll (find your system version)
And placing it into the folder: C:\Users\YOURUSER\Anaconda3\DLLs
(Depending on how you installed Anaconda, this may have to be placed into
the following folder: C:\ProgramData\Anaconda3\DLLs)
According to #alireza-taghdisian, you can locate the exact path of
your conda environments (where you need to copy the sqlite3 dll) by typing:
conda info --envs on your anaconda prompt.
Locate the sqlite3.dll file. In my case it was in following folder
C:\Users\Admin\anaconda3\Library\bin
where C:\Users\Admin\anaconda3 is the folder where Anaconda was installed
Add this to PATH in environment variables, and it should work then.
Try copying the sqlite3.dll from the
C:\Users\YOURUSER\anaconda3\Library\bin
folder to
C:\Users\YOURUSER\Anaconda3\DLLs
Please check https://github.com/jupyter/notebook/issues/4332
I added anaconda root/Library/bin to my PATH and now it works!
Add CONDA_DLL_SEARCH_MODIFICATION_ENABLE=1 to your environment variables.
before executing the program, enter conda activate in your shell.
I had tried all above solutions But for me and my system I got to know that
I downloaded Python in C:\Python27 hence there is dll folder in python C:\Python27\DLLs
I installed Sqlite3.dll in my above dll folder
May be this solution will help you because it completely depends on where do you install your python
Happy coding :)
I put the sqlite3.dll in the path folder of my Python venv and still wont work. I suspected it is a path problem.
(In my case: E:\Virtual_Env\mini_zinc\env\Scripts)
I found in my case I messed up installation in a virtual evn, somehow using an anaconda python kernel within a Python venv.
I reinstall the Python Venv and check the python version after installed Env is correct (not the Anaconda python), then proceed with Jupyter Notebook (or Juyterlab) and works fine.
I was able to resolve this issue by putting sqlite3.dll file in the C:\Users<USERID>\AppData\Local\conda\conda\envs<ENV NAME>\DLLs.
Download sqlite3.dll file from https://www.sqlite.org/download.html
or copy it from C:\ProgramData\Anaconda3\DLLs\
I found the #elgsantos useful. But for those who are new to Python and Conda like me, I would like to add a little bit of details.
1- I use miniconda3 for creating new environment.
2- interestingly, I got two installation path on my computer for conda: the first one (the obvious) is located on "C:\Users\taghdisian\miniconda3". The second one is on "C:\Users\taghdisian\AppData\Local\r-miniconda". The latter is the primary path that you need to copy your sqlite3 files into the envs folder. I copy them in the "C:\Users\taghdisian\AppData\Local\r-miniconda\envs\sdr3.9\DLLs" in which the sdr3.9 is one of my virtual Condo environment.
you can locate the exact path of your conda environments (where you need to copy sqlite3) by typing the conda info --envs on your anaconda prompt.
I hope this help.
got the same error while loading the jupyter notebook from other conda prompt than "base" environment.
[1]: https://i.stack.imgur.com/2DW7E.png
Resolved by installing sqlite package
(nlpenv) C:\Users\arunk>conda install sqlite
launching
*
(nlpenv) C:\Users\arunk>jupyter notebook

PyCharm Import Error: Claims 'matplotlib' is not a package, but works successfully in IDLE

Happy October everyone,
I've successfully downloaded modules before using either the pycharm installer or pip through the command screen, but for some reason when installing matplotlib pycharm cannot recognize it. I've uninstalled and reinstalled, I've installed through both methods, I've followed past similar questions asked on this site which make sure that you have the same interpreter and that it was installed in the right folder (pycharm error while importing, even though it works in the terminal).
So, here's the whole problem. Here's is the simple code, submitted into both pycharm and IDLE:
import matplotlib.pyplot as plt
plt.plot([1,2,3],[2,1,3])
plt.show()
When submitted into IDLE, my plot appears. When submitted into pycharm, the following error appears:
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "C:/PythonProject/matplotlib.py", line 1, in <module>
import matplotlib.pyplot as plt
File "C:\PythonProject\matplotlib.py", line 1, in <module>
import matplotlib.pyplot as plt
ImportError: No module named 'matplotlib.pyplot'; 'matplotlib' is not a package
I am currently running Python 3.4, PyCharm 2016.2.3, and my matplotlib folders are indeed in my site-packages folder inside my Python34 folder. Also for further verification:
PyCharm installation
Please help I've become frustrated since this is the only module I've run into trouble with. I've scoured StackOverflow and related websites to help, I've made sure I have all the requirements, etc.
I guess if you named your current writing python module as matplotlib.py.That cause the python load your current writing module instead of the actual matplotlib.py, which triggers an error.
I recommend you to use virtualenv. Is not strictly necessary but is good for dividing your project environments.
This is how I tested matplotlib on my Windows 10 installation, hope it helps.
Be sure that you have the python 3 installation folder listed in your Windows PATH environment variable, should be already listed if you checked "Add Python 3.5 to PATH":
You need also to set the Scripts folder in your PATH environment variable usually should be this path:
C:\Users\<your username>\AppData\Local\Programs\Python\Python35\Scripts
If you don't do that you have to prepend python -m to every command below like this: python -m <command>, so the command below would be python -m pip install virtualenv. I prefer the first solution.
To test matplotlib on Pycharm I've used virtualenv, here is how; first install virtualenv:
pip install virtualenv
Then you create your virtual environment in a folder of your choice, in my case I used python_3_env_00:
virtualenv python_3_env_00
After that you can activate you python 3 virtual environment:
python_3_env_00/Scripts/activate.bat
Now you should see in your command line the active virtual environment (python_3_venv_00), like this:
Now you can install matplotlib:
pip install matplotlib
Fire up PyCharm and add your virtual environment as you project interpreter, go to File->Settings search for Project Interpreter click on the gear icon and Add Local and set the path of your virtual environment, should look like something like this:
Test it:
import sys
print(sys.path)
run this code in where the import worked, and run it in the Pycharm project. Compare the lists. Find out which path that is not present in Pycharm sys.path.
Before importing pyplot, append the missing path to sys.path.
import sys
sys.path.append("the path")
import matplotlib.pyplot as plt
Does this work?
Please follow below steps if you are still getting an error:
If you are using PyCharm, it automatically create virtualenv.
Ensure Scripts path is set into PATH
C:\Users\<Username>\AppData\Local\Programs\Python\Python37-32
Then open PyCharm and go to File-> settings. Search for Project Interpreter. You will see window like this
sample image
Click on setting icon -> Existing Environment -> click on ... give below path
C:\Users\Krunal\AppData\Local\Programs\Python\Python37-32\python.exe
Click on Apply -> ok and you are good to go.
After installing matplotlib When I was trying to use matplotlib.pyplot it was giving error module not found.
I browsed some white papers and found out that we also need to install scipy library to use the matplotlib so I used the below in my command prompt
python -mpip install scipy
Restarted my kernel session.
It worked!!!
I was also facing issue while importing matplotlib but it got resolved and now I am able to use it from pycharm as well.
Please make sure you should have visual c++ 14 installed in your system.
2.If you have more than two python version installed on your system then please install matplotlib from both the version.
Eg. pip install matplotlib
pip3 install matplotlib
If matplotlib is working from python idle then please check whether you are using correct interpreter in pycharm or not and try to choose pythonw.exe path from your installed location.
Hope this will help, Please do let me know if you are still facing issue.
I had similar issue but I solved it very easily on pycharm 2019.3.2. In case anyone looking for an easier solution:
I just opened the terminal window on pycharm and typed pip install matplotlib and it was all good to go. Every project has its own virtual environment. Opening terminal window of IDE cds to project directory by default. So the installing command was enough.

How to install PyGObject on windows in a anaconda virtual env

I want to use Gtk with python under windows. I already have Anaconda installed on windows. In order not to mess up everything and to have some easiness uninstalling/reinstalling, I would like to have a virtual env created with conda, working with that Gtk installation. But I don't seems to be able to make it work.
Here is my process. I first create a raw Ananconda virtual env with
conda create -n gtk-exporter python
The virtual environment is located at C:\Anaconda3\envs\gtk-exporter.
I then download the latest windows installer for PyGObject at http://sourceforge.net/projects/pygobjectwin32/files/?source=navbar
I extract and execute the installer and tell it to use a portable python install at C:\Anaconda3\envs\gtk-exporter. I only select Base, GTK and Glade for installation. The installation finished in a second and says it's successful.
Then within windows' shell, I activate the new environment with activate gtk-exporter. However when I try to import gtk, it fails, not finding gi.repository.
>>> from gi.repository import Gtk
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ImportError: No module named 'gi'
What's wrong here ? C:\Anaconda3\envs\gtk-exporter\Lib\site-package contains a folder gnome with a lot of stuff including *.dlls, *.exe's and unix-looking folders like etc, lib or share, but I don't see a init.py or something pythonic. Am I missing a step.
Thank you for your help !
The problem was that I used python 3.5, whereas it is not supported. The installer should not have allowed me to install with python 3.5. I filed a bug report to signal it.
I solved the problem by uninstalling python 3.5 and installing python 3.4.

Resources