How Do I Import and Call Functions from Another Python File?

How to Import and Call Functions from Another Python File

When working with Python, you may encounter situations where you need to utilize functions defined in separate files. To address this, you'll need to import the function into the current module. This guide will demonstrate how to achieve this seamlessly.

The error message you encountered, "ImportError: No module named 'file.py'" arises because 'file.py' is not recognized as a Python module. Modules are typically directories or packages that contain multiple related modules.

To resolve this issue, we'll follow these steps:

1. Import the Function:

   • From the file containing the desired function, enter the following command:

     from file import function_name

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2. Call the Function:

   • In the current module, invoke the function using its name:

     function_name(arguments)

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For instance, if the desired function is 'function' within 'file.py', your code might look like this:

from file import function

function(argument1, argument2)

Note:

• Consider renaming 'file.py' as Python has a core module named 'file'.
• Ensure that the two Python files (the one importing the function and the one containing the function) reside in the same directory.

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