Скачать или смотреть 15- What is for loop in python?

A for loop in Python is a control flow statement used for iterating over a sequence (such as a list, tuple, string, or range) or other iterable objects. It repeatedly executes a block of code for each item in the sequence.

Explanation:
for: This keyword initiates the for loop.
variable: This is a temporary variable that takes on the value of each item in the iterable during each iteration of the loop.
in: This keyword specifies that the loop will iterate over the elements of the iterable.
iterable: This is the sequence or object (e.g., list, string, range) that the loop will iterate through.
Indentation: The code block to be executed within the loop must be indented consistently (typically with four spaces) to define its scope. Python uses indentation to determine which statements belong to the for loop.
How it works:
The for loop starts by taking the first item from the iterable.
This item's value is assigned to the variable.
The code block within the loop is executed using the current value of the variable.
The loop then moves to the next item in the iterable, assigns its value to the variable, and executes the code block again.
This process continues until all items in the iterable have been processed.