How Can I Inspect Object Properties in PHP and Python Using Built-in Functions?

Inspecting Object Properties with Built-In Functions

In the realm of object-oriented programming, debugging is often accompanied by the need to examine the properties and values of an object. In many languages, there exist built-in functions that facilitate this introspection.

The PHP print_r Function

One such useful feature in PHP is the print_r function. It recursively traverses an object's attributes, providing a readable representation of its properties and values in an array.

Emulating print_r in Python

While Python doesn't possess an exact equivalent to print_r, a combination of the vars() and pprint() functions can achieve similar functionality.

Using vars() and pprint()

The vars() function extracts the properties and values of an object into a dictionary. By calling pprint() on the result of vars(), you obtain a formatted, human-readable output.

Example:

from pprint import pprint

class Person:
    def __init__(self, name, age):
        self.name = name
        self.age = age

person = Person("John Doe", 30)
pprint(vars(person))

Output:

{'age': 30, 'name': 'John Doe'}

This powerful combination allows you to delve into the inner workings of your objects, aiding in debugging and understanding their state.

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