How Can I Execute Python Functions from the Command Line?

Executing Python Functions from the Command Line

Consider the following Python code:

<code class="python">def hello():
    return 'Hi :)'</code>

Executing this function directly from the command line offers several options.

Using the -c Argument

Utilize the -c (command) argument to directly execute the function. Assuming the script is named foo.py, run the following:

<code class="bash">$ python -c 'import foo; print foo.hello()'</code>

Simple Namespace Pollution

For simplicity, bypass namespace pollution by using this command:

<code class="bash">$ python -c 'from foo import *; print hello()'</code>

Controlled Namespace Pollution

For a controlled approach, import the specific function needed:

<code class="bash">$ python -c 'from foo import hello; print hello()'</code>

These methods provide flexibility in executing Python functions directly from the command line, allowing for efficient code execution in various scenarios.

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