#20 Python Tutorial for Beginners | While Loop in Python

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In this lecture, we will learn:
– Loops in Python language
– What is the use of loops?
– While loop and its implementation
– Syntax of the while loop
– Nested while loops in python
– What is the ‘end’ parameter in python?

#1
– We can execute a statement multiple times, by using the loops.
– There are two types of a loop:
1. For loop
2. While loop

– In the while loop, we need a counter to count the number of times, a statement can be executed.
– We also have to put a condition in a while loop to repeat a statement until the given condition is satisfied.
– The while Loop. With the while loop, we can execute a set of statements as long as a condition is true.
– When the condition becomes false, the line immediately after the loop in the program is executed.
– The value of the counter will increase or decrease until the condition gets false.

#2
– Syntax of the while loop:-
counter variable
while (condition):
statements;
incrementation/ decrementation

– So, there must be three things in a while loop:-
1. Initialization
2. Condition
3. Increment / Decrement
– Nested while loops can also be used in Python.
– Nested while loop simply means that a loop inside another loop.

#3
– To print the values in the same, we use (end=” “). The value will not come in the new line after using it.
– Passing the whitespace to the end parameter (end=’ ‘) indicates that the end character has to be identified by whitespace and not a new line.

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