Python Coding challenge - Day 559| What is the output of the following Python Code?

 

Code Explanation:

1. Importing the inspect module

import inspect

This imports Python's inspect module, which provides useful functions to get information about live objects—like functions, classes, and modules.

One of its features is extracting function signatures.

2. Defining a Function

def func(a, b=2): pass

This defines a function named func that takes two parameters:

a: required (no default value)

b: optional, with a default value of 2

3. Getting the Function Signature

sig = inspect.signature(func)

inspect.signature(func) returns a Signature object that represents the call signature of the function func.

It allows you to inspect parameters, defaults, annotations, etc.

4. Accessing a Parameter’s Default Value

=print(sig.parameters['b'].default)

sig.parameters is an ordered mapping (like a dictionary) of parameter names to Parameter objects.

sig.parameters['b'] gets the Parameter object for the b parameter.

.default retrieves the default value assigned to b, which is 2.

Output:

2

This prints 2, the default value of parameter b.

Final Output:

2

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