while Statement
Python’s while is the first looping statement. In fact, it is a conditional looping statement. In comparison with an if statement where a true expression will result in a single execution of the if clause suite, the suite in a while clause will be executed continuously in a loop until that condition is no longer satisfied.
General Syntax
while expression:
suite_to_repeat
The suite_to_repeat clause of the while loop will be executed continuously in a loop until expression evaluates to Boolean false. This type of looping mechanism is often used in a counting situation, such as the example in the next subsection.
>>> count = 0 >>> while (count <9): print "the index is :",count count = count + 1 the index is : 0 the index is : 1 the index is : 2 the index is : 3 the index is : 4 the index is : 5 the index is : 6 the index is : 7 the index is : 8
