Python while loop python not equal8/12/2023 The body of a while-loop is made up of the lines of code that we want to be executed multiple times. Notice that while is written in lowercase, and there is a colon after the condition. The condition is an expression that evaluates to a boolean value: either True or False. If either operand, or both, is True, then or evaluates to True. or evaluates to False if and only if both of its operands are False.If either operand, or both, is False, then and evaluates to False. and evaluates to True if and only if both of its operands are True.The operators and and or take two boolean values and evaluate to a boolean value: In the expression 5 < 4, the less-than operator takes two integers and returns a boolean. The conditional operators =,, etc, can be used to compare numbers, strings, or other types, and return a boolean. One way to more safely compare floating-point numbers for equality is to check whether the absolute value of the difference of the numbers is less than some small constant (often called “epsilon”), which you will have to set. If you compare 1.22464679915e-16 to 0, Python gives the answer False. We get an answer of 1.22464679915e-16, but you probably remember from math class that sin ( π) is equal to 0. The numerical computation of the sin function is also approximate. In this program, we see that Python only has an approximate value for π.
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