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Tutorial Reference

Python do while Loop

Learn how to emulate a do...while loop in Python using a while True loop with break statement for repeating code blocks at least once until a condition is met.

The do...while loops are used when you have a block of code which you want to repeat at least one time and ** until a defined condition is no longer met**.

Syntax

Python does not support the do...while loop.

However, you can use the while loop and a break statement to emulate the do...while loop statement.

while True:
    <statement>
    <statement>
    ...

    if condition
        break

Example

For example, read numbers until 0 is entered:

while True:
    num = int(input("Enter a number: "))
    print(f"The number entered is {num}")
    if num == 0:
         print(f"The end.")
         break

Output

Enter a number: 10
The number entered is 10
Enter a number: 3
The number entered is 3
Enter a number: 0
The number entered is 0
The end.
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