Category: Python Tutorials | Page 3

Python – Changing Items in a Dictionary

Items in a Python dictionary can be changed by referring to its key name or using the update() method.

Adding an item to a Python dictionary is done by using a new index key and assigning a value to it.

There are multiple ways to remove items from a Python dictionary: the pop(), popitem(), and clear() methods, as well as the del keyword.

Python dictionary items can be accessed by looping through them using a for loop.

Python dictionaries can be copied using the copy() method or the dict() function.

A Python dictionary that contains other dictionaries as items is called a nested dictionary, and can be accessed just like a regular dictionary.

Python supports the usual logical conditions which can be used in several ways, most commonly in various “if statement” types and loops.

Python uses the while loop to execute a set of statements as long as a condition is true.

In Python, a for loop is used for iterating over a sequence (list, tuple, dictionary, set, or string).