While loop in Python | While loop Python | Python Tutorial
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In this video I have explained what is While Loop in Python. Python While Loop is used to execute a block of statements repeatedly until a given condition is satisfied. And when the condition becomes false, the line immediately after the loop in the program is executed.
Python Continue Statement returns the control to the beginning of the loop.
Python Break Statement brings control out of the loop.
In Python, a while loop may have an optional else block.
The else part is executed after the condition of the loop evaluates to False.
Difference between for loop and while loop in Python
Now, we will compare both loops in Python to understand where to use 'for loop' and where to use 'while loop'.
For loop:
1. For loop is used to iterate over a sequence of items.
2. For loops are designed for iterating over a sequence of items. Eg. list, tuple, etc.
3. For loop require a sequence to iterate over.
4. For loop is typically used for iterating over a fixed sequence of items.
5. For loop is more efficient than a while loop when iterating over sequences, since the number of iterations is predetermined and the loop can be optimized accordingly.
While loop:
1. While loop is used to repeatedly execute a block of statements while a condition is true.
2. While loop is used when the number of iterations is not known in advance or when we want to repeat a block of code until a certain condition is met.
3. While the loop requires an initial condition that is tested at the beginning of the loop.
4.While loop is used for more complex control flow situations.
5. While a loop may be more efficient in certain situations where the condition being tested can be evaluated quickly.
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Channel: / @newsoncoding
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