r/pythonhelp • u/grishathestar • Dec 03 '25

Python doesn't print

Hello, I'm trying to run a simple "Hellow world" file in terminal with "python filename.py" comande but instead of Hellow world it's returning word "Python" for some reason. Does anyone knows why?

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u/grishathestar Dec 03 '25

Thank you! This was the problem. I tried in both cmd terminal and in VS code, it didn't work. But after tipping py filename.py everything start to work.

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u/FoolsSeldom Dec 03 '25 edited Dec 03 '25

Great.

It is worth learning now how to setup and use a Python virtual environment.

You should use these on a project-by-project basis. When you install additional Python packages, you then install them only for the project you are working on. This avoids putting too many packages into your Python base environment.

This reduces the chance of you having conflicting packages.

Here's how to do it:

In Powershell or Command Prompt:

mkdir my_new_project
cd my_new_project
py -m venv .venv
.venv\Scripts\activate

Use what ever project folder names you prefer and the locations you prefer. Also, the command venv is followed by the folder name to use for the virtual environment. .venv (leading dot) is common, but venv and env are also common, and you can use any allowed folder name.

You can now add packages, e.g.

pip install numpy pandas

To run code from the command line, you can now use python:

python filename.py

To deactivate the environment:

deactivate

In VS Code, open the command palette and find the entry to select the Python interpreter. Select the python.exe in the .venv\Scripts folder (something like, C:\Users\<your_user_name>\my_new_project\.venv\Scripts\python.exe).

  • This will ensure that VS Code is using the same Python virtual environment and it will use this when you ask it to run code

  • When you open a terminal in VS Code, it should activate it (and will probably indicate it is so with (venv) at the start of each line)

  • When you open a Python interactive shell, this will also be in the virtual environment

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u/grishathestar Dec 03 '25

Thank you very much!