How Can I Dynamically Access a Function\'s Name in Python?

Accessing Function Name Dynamically

Determining a function's name from within the function itself can be useful in various scenarios. One method to achieve this is by employing the inspect module.

Utilizing Inspect Stack

The inspect.stack() function returns a list of frames representing the active stack trace. The 3rd element in each frame corresponds to the name of the function that invoked the frame.

In the following example, the foo function prints its name using inspect.stack():

<code class="python">import inspect

def foo():
    print(inspect.stack()[0][3])
    print(inspect.stack()[1][3])  # Prints the caller of foo's name

foo()</code>

Output:

foo
<module_caller_of_foo>

Alternative Approaches

While inspect.stack is a robust method, there are limitations. For instance, it may not work in all environments or within other functions that manipulate the stack. Alternatively, one could access the global __name__ attribute, which holds the name of the current module or function. However, this approach may not be universally applicable.

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