The while loop in Python is one of the most general ways to perform iteration. While loop is a control loop statement that allows code to be executed repeatedly based on a given condition.
Syntax for a While Loop in Python
while: statement else: statement
The else part is not necessary to end while loop, but when used then it gets executed when while loop terminates.
Python Example using While Loop
# print 0 to 9 using while loop
x=0
while x<10:
print("result:",x)
x=x+1
Output
result: 0 result: 1 result: 2 result: 3 result: 4 result: 5 result: 6 result: 7 result: 8 result: 9
While loop using else:
#using while and else
x=0
while x<10:
print("result",x)
x+=1
else:
print("thanks")
Output
result: 0 result: 1 result: 2 result: 3 result: 4 result: 5 result: 6 result: 7 result: 8 result: 9 thanks
Note: If the while loop condition never results false, then the loop will run endless times i.e infinity.
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