I'm trying to debug a project that has a lot of additional libraries added to PYTHONPATH at runtime before launching the python file.
I was not able to add those commands with tasks.json file prior to debugging python file in Visual Studio code (see post Visual Studio Code unable to set env variable paths prior to debugging python file), so I'm just adding them via an os.system("..") command
I'm only showing 1 of the libraries added below:
# Standard library imports
import os
import sys
os.system("SET PYTHONPATH=D:\\project\\calibration\\pylibrary\\camera")
# Pylibrary imports
from camera import capture
When I debug, it fails on line from camera import capture with:
Exception has occurred: ModuleNotFoundError
No module named 'camera'
File "D:\project\main.py", line 12, in <module>
from camera.capture import capture
I also tried
os.environ['PYTHONPATH']="D:\\project\\pylibrary\\camera" and I still get the same error
Why is it not remembering the pythonpath while running the script?
How else can I define the pythonpath while running Visual Studio Code and debugging the project file?
I know I can add the pythonpath to env variables in windows, but it loads too many libraries and I want it to only remember the path while the python script is executed.
Thanks
Using os.system() won't work because it starts a new cmd.exe shell and sets the env var in that shell. That won't affect the env vars of the python process. Assigning to os.environ['PYTHONPATH'] won't work because at that point your python process has already cached the value, if any, of that env var in the sys.path variable. The solution is to
import sys
sys.path.append(r"D:\project\calibration\pylibrary\camera")
Related
I have a directory that contains sub directories of code that I reuse.
MyBaseDirectory
\genericcodedir1
reuse1.py
\simpleapp1
app1.py
app1.py has the following line
import reuse1
Visual studio will fail to run this since it says it can't find the library.
On windows I simply added the genericcodedir1 to the PYTHONPATH environment variable and all is well.
What should I do on the raspberry pi to allow this to run?
error message:
Exception has occurred: ModuleNotFoundError
No module named 'reuse1'
File "/home/pi/Desktop/Mybasedirectory/simpleapp1/app1.py", line 5, in <module>
import reuse1
I assume you have file structure like this and you open Test folder in VS Code As follows.
You can specify the path by adding the following code above the import statement in app.py:
import sys
sys.path.append("./genericcodedir1")
import reuse1
In addition, you can add the following configuration to the settings.json file to make vscode recognize reuse1.
{
"python.analysis.extraPaths": [
"./genericcodedir1"
]
}
code and result
so if your files looks like :
|_genericcodedir
|_reuse1.py
|_simpleapp1
|_app1.py
you need to add an empty file called __init__.py in your genericcodedir.
another note worthy thing is your working directory (the directory in which your terminal runs)
you may need to append to os path depending on where you are when launching the program
I know there has been similar problems, but unfortunately most of them are related to errors with pyperclip itself instead of the batch file, which i suspect is where the problem stems from.
Below is an MRE of my Python script:
#! python3 -> Do I have to use my version(3.8)?
# pw.py - An insecure password locker program.
import sys, pyperclip
#do something with the module
And my batch file pw.bat:
#py.exe C:\Users\KEVIN\PycharmProjects\atbs_exercise\pw.py %*
#pause
I am running python 3.8 on windows 10. I imported the pyperclip module in my python script pw.py and ran the file via pw.bat, and this in turn gives me this error:
Traceback (most recent call last):
File "C:\Users\KEVIN\PycharmProjects\atbs_exercise\pw.py", line 7, in <module>
import sys, pyperclip
ModuleNotFoundError: No module named 'pyperclip'
Press any key to continue . . .
Which shouldn't happen as I have installed pyperclip on the project using pip, and the script itself runs just fine in pycharm. What am I missing?
EDIT: I forgot to mention that I am using pycharm. So the thing is that pycharm had also installed python.exe in the project folder. And as the module pyperclip is only installed to that folder, the python.exe used in the bat must point to the one in the project folder.
i don't know why are you using py.exe. when running commands from a batch file or cmd .you should use python.exe.obviously you would need to add python to add for doing so.instead of adding py.exe to path,add python in system variable Path which is somewhere present in C:\Users\[username]\AppData\Local\Programs\Python\(your path might be diffrernt).you can add python in Path by following this post
after adding python to path just use the following batch-file:
#echo off
python path-to-your-py-file\filename.py
i am working on a long project in Django and suddenly i faced this error:
import asyncio
File "C:\Users\AppData\Local\Programs\Python\Python38\lib\asyncio\__init__.py", line 17, in <module>
from .streams import *
ModuleNotFoundError: No module named 'asyncio.streams'
I tried to instal it using : pip install asyncio, But again it gave some errors :
Traceback (most recent call last):
File "c:\users\appdata\local\programs\python\python38\lib\shutil.py", line 587, in _rmtree_unsafe
with os.scandir(path) as scandir_it:
FileNotFoundError: [WinError 3] The system cannot find the path specified: 'C:\\Users\\AppData\\Local\\Temp\\pip-req-tracker-ua43f6rj'
please Tell me how can i fix it . I am Using Python 3.8.1
Please reinstall python3.8.1 for windows 10
Packages and modules in python can be imported when they appear in the PYTHONPATH environement variable or in the sys.path list.
On each PYTHONPATH expanding, will ends up in the sys.path list.
so make sure that, the instalation of your asyncio was successeful and its path exist in the sys.path list. how you check? see below:
in comand line or in script.py type:
import sys
p_asyn=r'C:\Users\AppData\Local\Programs\Python\Python38\lib\asyncio'
if p_asyn not in sys.path:
print('asyncio not in the sys path list! :-(')
sys.path.append(p_asyn)
its better to append new paths to the PYTHONPATH rather than editing the sys.path.
Anywa, if the module you are trying to import (asuncio) is a built in lib/module you should check if the pyhton installation was successful and the path environement variable edited correctly and has all paths that should be.
in windows make sure that python installation dir appears in the path. if not use the set command,
set PYTHONPATH=%PYTHONPATH%;C:\My_python_lib
Python usually stores its library (and thereby your site-packages folder) in the installation directory. So, if you had installed Python to C:\Python\, the default library would reside in C:\Python\Lib\ and third-party modules should be stored in C:\Python\Lib\site-packages.
This attended to windows users.
for further reading, enter the link here
using_py2
using_py3
This is a very basic question on how to code in python and run your script from a very beginner.
I'm writing a script using Xcode9.4.1 which is supposed to be for python3.6. I then have an sh script run.sh, in the same folder of the script (say "my_folder") which simply looks like
python my_script.py
The python script looks like
from tick.base import TimeFunction
import numpy as np
import matplotlib.pyplot as plt
v = np.arange(0., 10., 1.)
f_v = v + 1
u = TimeFunction((v, f_v))
plt.plot(v, u.value(v))
print('donne!\n')
But as I try to run my_script.sh from the terminal I get a "ImportError: No module named tick.base" error.
But the tick folder is actually present in "my_computer/anaconda3/lib/python3.6/site-packages" and up to last week I was using Spyder from anaconda navigator and everything was correctly working, so no "import error" occurred.
The question is quite trivial, in some sense it simply is "what's the typical procedure to code and run python script and how modules are supposed to be imported-downloaded when running on a given machine?"
I need it since my script is to be run on another machine through ssh and using my laptop to make some attempts. Up to last year I used to work in C and only need to move some folders with code and .h files.
Thank for help!
EDIT 1:
From the Spyder 3.2.7 setting, where the script was giving non problem, I printed the
import sys
print(sys.path)
The -manually- copied the content to the sys.path variable in my_script.py and rerun 'run.sh' and now getting a new (strange) error:
Traceback (most recent call last):
[...]
File "/Users/my_computer/anaconda3/lib/python3.6/site-packages/tick/array/build/array.py", line 106
def tick_double_array_to_file(_file: 'std::string', array: 'ArrayDouble const &') -> "void":
^
SyntaxError: invalid syntax
First, check the python which you are calling the script with is pointing to the anaconda python and it is of the same version you are expecting it to be. You can do "which python" command in Linux and Mac to which the path which points to python. It if is pointing to some different version or build of python than the one which you are expecting then add the needed path to the system environment PATH variable. In Linux and Mac this can be done by adding the following line in the .bashrc file at the /home/ folder:
export PATH=/your/python/path:$PATH
And then source the .bashrc file.
source .bashrc
If you are on a operating system like cent os ,breaking the default python path can break your yum so be careful before changing it.
I am running a script in PyCharm and under the Project Interpretor I have the path
C:\envs\conda\keras2\python.exe
When I try to run the script via ssh on the server I get a 'no module named' error. I get
/usr/bin/python as the ans to 'which python' on the server itself. Could you tell me which path I must add for the script to run properly?
I'm facing of a strange issue, and after a couple of hour of research I'm looking for help / explanation about the issue.
It's quite simple, I wrote a cgi server in python and I'm working with some libs including pynetlinux for instance.
When I'm starting the script from terminal with any user, it works fine, no bug, no dependency issue. But when I'm trying to start it using a script in rc.local, the following code produce an error.
import sys, cgi, pynetlinux, logging
it produce the following error :
Traceback (most recent call last):
File "/var/simkiosk/cgi-bin/load_config.py", line 3, in
import cgi, sys, json, pynetlinux, loggin
ImportError: No module named pynetlinux
Other dependencies produce similar issue.I suspect some few things like user who executing the script in rc.local (root normaly) and trying some stuff found on the web without success.
Somebody can help me ?
Thanx in advance.
Regards.
Ollie314
First of all, you need to make sure if the module you want to import is installed properly. You can check if the name of the module exists in pip list
Then, in a python shell, check what the paths are where Python is looking for modules:
import sys
sys.path
In my case, the output is:
['', '/usr/lib/python3.4', '/usr/lib/python3.4/plat-x86_64-linux-gnu', '/usr/lib/python3.4/lib-dynload', '/usr/local/lib/python3.4/dist-packages', '/usr/lib/python3/dist-packages']
Finally, append those paths to $PATH variable in /etc/rc.local. Here is an example of my rc.local:
#!/bin/sh -e
#
# rc.local
#
# This script is executed at the end of each multiuser runlevel.
# Make sure that the script will "exit 0" on success or any other
# value on error.
#
# In order to enable or disable this script just change the execution
# bits.
#
# By default this script does nothing
export PATH="$PATH:/usr/lib/python3.4:/usr/lib/python3.4/plat-x86_64-linux-gnu:/usr/lib/python3.4/lib-dynload:/usr/local/lib/python3.4/dist-packages:/usr/lib/python3/dist-packages"
# Do stuff
exit 0
The path where your modules are install is probably normally sourced by .bashrc or something similar. .bashrc doesn't get sourced when it's not an interactive shell. /etc/profile is one place that you can put system wide path changes. Depending on what Linux version/distro it may use /etc/profile.d/ in which case /etc/profile runs all the scripts in /etc/profile.d, add a new shell script there with execute permissions and a .sh extention.