What operator would you use to check for equality between two values?

The operator used to check for equality between two values in Python is the double equals sign, represented as ==. This operator compares the values on both sides and returns True if they are equal and False if they are not. For instance, if you evaluate 5 == 5, it returns True, while 5 == 4 returns False. This operator is essential for making decisions in programming, such as within conditional statements like if statements, enhancing the ability to control the flow of a program based on dynamic data evaluation.

In contrast, the single equals sign = is used for assignment, not comparison. Using != is for checking inequality, while === is not a valid operator in Python; it is used in other languages like JavaScript for strict equality comparison. Thus, the double equals sign is the correct choice for testing equality in Python.