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ModuleNotFoundError: No module named '...'

I'm trying to install a few packages (beautifulsoup4 and requests) for a project.
I installed these packages by running these commands in the terminal on macOS:
pip3 install beautifulsoup4
pip3 install requests
both did install successfully.
Now if I open my project in PyCharm, I can import the modules by using:
from bs4 import BeautifulSoup
import requests
Both packages are imported successfully and can be used in my code.
To be sure everything was installed correctly, I looked at the venv/lib/Python3.10 folder. beautifulsoup4-4.10.0.dist-info, bs4, requests and requests-2.27.1.dist-info are present.
However, when I run the CGI script (Python), I get the following error in the terminal:
from bs4 import BeautifulSoup
ModuleNotFoundError: No module named 'bs4'
Even when I open a new terminal window and run the following commands:
python3
>>> from bs4 import BeautifulSoup
it runs fine without any errors.
The same issue happens for the requests package.
I also ran pip3 install bs4 but that also didn't fix anything.

I found what caused the issue. bs4 and requests were both installed correctly but in my CGI script, I used the wrong Python path. I had to change #!/usr/bin/python3 to the path that which python3 gave me.

I would recommend to always install packages using python3 -m pip install <name_of_the_package>. In this way you can be sure that you are using the correct pip.
To make sure that the python you a using really has the packages installed, try python3 -m pip list.
If all is good, check if the python interpreter the pycharm is using in your project is the right one.
It sounds to me that in pycharm you're using a virtual environment, but when you are using python3 at the terminal, you a using the main installation.

im new and python wont let me install the pafy module or the vlc module so i can do my first project, how to fix?

Hi I'm new and am trying to see how Python Modules work but whenever I do import pafy it says modulenotfounderror and when I do install pafy it says that the I in install is a syntax error.
so how do I fix this? do I download something? and I know the answer might seem obvious but this is my first time using one and those two are the only answers im getting, so help a brother out?

You need to use the command line to pip install pafy
For more information see the pip documentation.
Alternatively, if you want to install it from a python file, you can make one and run it with this code:
import pip
pip.main(['install', 'pafy'])

Use pip from command line.
Assuming you've installed python from the official website (https://python.org), pip should be pre-installed, and you can simply run command line (hotkey win + r and type in cmd on windows) and type in pip install <module name here>, which in your case would be pafy.
Use (this website) for more info, it provides pip commands for macOS, Windows and Linux

How do I install selenium without pip?

I need to install a package, Selenium, for python, but when I run ’pip install selenium’ in my command prompt, it says that ’ pip is not recognized as an internal or external command,
operable program or batch file’. I have added my pip path to PATH variables, and I have made sure that pip is installed properly. I have reinstalled python to make sure that pip is installed, and repaired python in case there were missing components or something. I have tried running ’py -m pip install selenium’, and it says that selenium is already installed, but when I run my code it says that there is no module named selenium. I have two different python programs, this python and Anaconda;Spyder. When I install selenium on Spyder, it works, but when I run the code it doesn’t work, not showing any errors. Can you help me

Do you maybe have multiple python versions on your system like for example python2.7 and python3.8?
Maybe you could try using
pip3 install ...
python3 -m install ...
python -m pip install ...
That worked for me. Could you also share your error.

Are you using macOS?
I ran into a similar issue a while back, try:
pip3 install selenium

Python - ImportError: No module named 'requests'

I get this error when running code, so it appears that requests hasn't installed properly. I am running Windows 7 32-bit system with Python 3.3.
When I go into 'Programs and Features' in windows it shows up as installed.
I installed this program from http://www.lfd.uci.edu/~gohlke/pythonlibs/ and I have also downloaded the requests folder and tried installing it this way, I can't seem to get this to work.
I have visited ImportError: No module named 'requests' already, but I didn't find this helped at all.
I keep seeing the following statement, but I am uncertain of how to run this?
$ python setup.py install
Please help!?!

The answer there is clear. But let me explain to you as good as I can. This error comes because requests module is not installed in your system
Download the requests module to your system from here
And extract it. Go to your command prompt/terminal and reach to the folder you downloaded.There, you will see setup.py, the file that you need to execute to install the requests module.
python setup.py install
Installs the requests module

This line:
$ python setup.py install
It's a command line in a terminal in Linux or the alike. My guess is that you could do the same opening a terminal in Windows pressing the start key and typing 'cmd', without quotes of course. If you had python already install the %PATH% variable should be set up properly and it should just run. Well, perhaps you need to go to the same folder as the setup.py using
> cd path_to_file
And then,
> python setup.py install
I hope it helps. Let me know otherwise.

If you are using Ubuntu, there is need to install requests
run this command:
pip install requests
if you face permission denied error, use sudo before command:
sudo pip install requests

Can't install Beautifulsoup ("bs4 does not exist")

I'm struggling to get BeautifulSoup installed on Windows. So far, I have:
downloaded BeautifulSoup to "My Downloads".
unzipped/ extracted it in the downloads folder.
At the command prompt, I ran:
C:<path to python33> "C:path to beautiful soup\setup.py" install
The process generated the messages:
running install
running build
running build_py
**error: package directory 'bs4' does not exist.**
Yet, in the path to BeautifulSoup in quotes above, there is indeed the folder bs4. What am I missing?

You need to be in the directory containing setup.py to run it. Make sure your working directory is correct.

I had a similar problem. In my case, I was able to get pip to work, but first I had to look up the right name for the package:
wrong: pip install bs4
fail
wrong: pip install beautifulsoup
fail
right: pip install beautifulsoup4
Successfully installed beautifulsoup4

I had same problem when tryingo to export my wordpress blog to jekyll with this tutorial.
My first step was to install pip with success & next try to install BeautifulSoup with it:
pip install bs4 # failed
pip install BeautifulSoup # that was succes
But... 2nd line install BeatifulSoup3, not most recent version 4...
So I've uninstalled bs3:
pip uninstall BeautifoulSoup # with success
Downloaded most recent bs4 from this site & installed it manually within command/mingw:
cd %bs4-download-dir%
python setup.py install
And now everything is OK :)

For clean install without pip nor easy_install :
Your paths
(change it by your paths)
Your python path : c:\Python27\python.exe
Your beautyfulsoup path : c:\BeautifulSoup
Instruction to follow for clean installation :
cd c:\BeautifulSoup
"c:\Python27\python.exe" setup.py install
Have fun and share !
“Any fool can know. The point is to understand.”

Make sure the batch file you used to run "python" "\beautifulsoup4-4.3.1\setup.py" install is in the same directory as "\beautifulsoup4-4.3.1\setup.py"