Such a file is called a module; definitions from a module can be imported into other modules or into the main module (the collection of variables that you have access to in a script executed at the top level …

Create and Use Virtual Environments ¶ Create a new virtual environment ¶ venv (for Python 3) allows you to manage separate package installations for different projects. It creates a “virtual” isolated …

The ModuleNotFoundError: No module named '...' is one of the most frequently encountered errors in Python. It occurs when Python's import system cannot locate the module you are trying to import.

Under Cygwin I had to install the python-setuptools package. This got easy_install working again, which had suffered the same problem. Then I used easy_install pip to get pip working again. My problem …