python dict object has no attribute has key

Title: Understanding and Handling Python Dict AttributeError: 'dict' object has no attribute 'has_key'
Introduction:
In Python, dictionaries are a versatile and commonly used data structure that allows you to store and retrieve key-value pairs efficiently. However, if you are migrating your code from an older Python version (2.x) to a newer version (3.x), you might encounter an AttributeError when using the has_key method with dictionaries. This is because has_key has been removed in Python 3.x. This tutorial will explain the issue and provide alternative solutions.
Error Scenario:
If you attempt to use the has_key method on a dictionary in Python 3.x, you will encounter the following error

Title: Understanding Python dict Object: has_key Attribute and Alternatives
Introduction:
Python dictionaries (dict) are powerful data structures that store key-value pairs. However, some users may encounter confusion when attempting to use the has_key attribute, only to find that it is not a valid attribute for dictionaries in Python 3.x. This tutorial aims to explain the absence of the has_key attribute and provide alternative methods to achieve the same functionality.
Background:
In Python 2.x, the dict object had a method called has_key(key), which returned True if the dictionary contained the specified key and False otherwise. However, this method was removed in Python 3.x for simplicity and consistency.
Error: AttributeError: 'dict' object has no attribute 'has_key':
If you attempt to use has_key on a Python 3.x dict, you will encounter an AttributeError. For example: