Python while Loop statement

Python while Loop statement

in Python programming, the while statement is used to loop the execution of a program, which, under some conditions, loops through some segments of the program to handle the same tasks that require repeated processing.

the execution statement can be a single statement or a block of statements.

      The judging condition can be any expression, and any value other than 0, or non-null (NULL), is true.

      when the condition false false, the loop ends.

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Example :

#！ /usr/bin/python

Count = 0

while (Count < 9):

print ' The count is: ', count

Count = Count +1

Print "Good bye!"

The above code executes the output result:

    

the count is: 0the count is: 1the count is: 2the count  is: 3the count is: 4the count is: 5the count is: 6the  count is: 7the count is: 8good bye! 

The while statement has two other important commands, Continue,break, to skip loops.

• The Continue is used to skip the cycle.

• Break is used to exit the loop, in addition to the "judging condition" can also be a constant value, indicating that the loop must be established.

Here's how:

# Continue and Break usage:

i = 1

While I < 10:

i + = 1

If 1%2 >0: # Skip output when non-even

Continue

Print I # output even 2, 4, 6, 8, ten

i = 1

while = 1: # The loop condition is 1 must be set

Print I

i + = 1

If i >: # When I is greater than 10 o'clock jump out of the loop

Break

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Python while Loop statement