How can Python invoke the functions for true and false?

In Python, True and False are built-in boolean values, not functions, so you cannot directly call them. However, you can use them in conditional expressions for logical evaluations.

For example:

x = 5
if x > 3:
    print("x大于3")
else:
    print("x小于等于3")

In this example, the if statement uses the boolean value True to determine if the condition is true, then executes the code within the if block if it is true, otherwise executes the code within the else block.

It is important to note that the first letters of True and False must be capitalized, otherwise Python will treat them as variable names.