[Python] Why does my computer keep saying that I successfully installed these libraries but...

Issue: ModuleNotFoundError for VLC and Pytube in Python Script


I’m trying to run a Python script for a video player, but I keep encountering the following errors:

ModuleNotFoundError: No module named 'vlc'
ModuleNotFoundError: No module named 'pytube'


Even though I have installed both modules using pip, they are not recognized in my script.

Steps I’ve Taken to Resolve the Issue


1. Tried Installing Modules

I ran the following in the terminal inside VS Code:

pip install python-vlc pytube

The output confirmed successful installation:

Successfully installed python-vlc-3.0.21203 pytube-15.0.0

However, my script still does not recognize them.

2. Checked Installed Packages I ran:

pip list | grep -E "vlc|pytube"

Both python-vlc and pytube appeared in the list.

3. Tried Switching Python Environments

• 
  I checked my Python version using python --version.
  
  
• 
  I selected a different Python interpreter in VS Code via Ctrl + Shift + P > Python: Select Interpreter.
  

I tried running the script in different environments, but the issue remained.

4. Confirmed Installation Paths I ran:

pip show python-vlc pytube

This showed the installation path for both libraries, but they are still not recognized in my code. Here is what is showed:

**Name: python-vlc Version: 3.0.21203 Summary: VLC bindings for python. Home-page: https://wiki.videolan.org/PythonBinding Author: Author-email: Olivier Aubert contact@olivieraubert.net License: LGPL-2.1+ Location: C:\Users\wsafe\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.12_qbz5n2kfra8p0\LocalCache\local-packages\Python312\site-packages Requires: Required-by:


Name: pytube Version: 15.0.0 Summary: Python 3 library for downloading YouTube Videos. Home-page: https://github.com/pytube/pytube Author: Ronnie Ghose, Taylor Fox Dahlin, Nick Ficano Author-email: hey@pytube.io License: The Unlicense (Unlicense) Location: C:\Users\wsafe\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.12_qbz5n2kfra8p0\LocalCache\local-packages\Python312\site-packages
Requires: Required-by:**

I am not using a virtual environment and the issue persists across different Python versions and environments in VS Code.

import os
import time
import vlc
from pytube import YouTube

# Get user input
video_url = input("Enter the YouTube video URL: ")
start_minutes = int(input("Enter start minutes (e.g., 1 for 1:30): "))
start_seconds = int(input("Enter start seconds (e.g., 30 for 1:30): "))
end_minutes = int(input("Enter end minutes: "))
end_seconds = int(input("Enter end seconds: "))
loop = input("Do you want to loop the video? (yes/no): ").strip().lower()
loop_count = int(input("How many times should it loop? ") if loop == "yes" else 1)

# Convert minutes & seconds into total seconds
start_time = start_minutes * 60 + start_seconds
end_time = end_minutes * 60 + end_seconds

# Download video using pytube
yt = YouTube(video_url)
stream = yt.streams.filter(progressive=True, file_extension="mp4").order_by("resolution").desc().first()
video_path = stream.download(output_path=os.getcwd())

# Start VLC instance
instance = vlc.Instance()
player = instance.media_player_new()
media = instance.media_new(video_path)
media.add_option(f"start-time={start_time}") # Set start time
player.set_media(media)

# Loop video playback
for _ in range(loop_count):
print(f"Playing video from {start_minutes}:{start_seconds:02} to {end_minutes}:{end_seconds:02}...")
player.play()

time.sleep(end_time - start_time) # Wait until end time
player.stop() # Stop playback
time.sleep(1) # Short pause before replaying

print("Playback finished.")


Question


How can I resolve the ModuleNotFoundError for vlc and pytube despite successful installation? Are there specific steps to ensure they are correctly recognized by my Python environment in VS Code?

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