The syntax

Python provides two repetition statements, while and for. We will consider while first. The syntax for the while statement is,

while test-expression:
    statement

Or, in words, the while statement consists of the keyword while followed by a test expression, terminated by a colon, followed by a statement (simple or compound) that will be executed as long as the text expression is True. Note that the statement(s) following while must be indented.