How Do I Call Functions from External Python Files?

Calling Functions from External Python Files

When working with multiple Python files in a project, you may need to call functions defined in one file from another. This can be accomplished through Python's module and import mechanisms.

Importing the Function

1. Create a Python file containing the function you want to import, e.g., file.py with a function named function.
2. In the file where you want to use the function, use the import statement:

from file import function

This will import the file module and make the function available in your current file.

Calling the Function

Once the function is imported, you can call it as you would any other function:

function(a, b)

Resolving ImportError

In your question, you encountered an ImportError while trying to import a function from file.py. This is because file is a reserved word in Python and cannot be used as a module name. Rename your Python file to something other than file.py.

File Path Considerations

Ensure that the file containing the function and the file importing the function are in the same directory or within the Python path. Otherwise, you may encounter ModuleNotFoundError exceptions.

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