What's the Difference Between `=`, `==`, and `===` in Python?

Single, Double, and Triple Equals: Dissecting the Differences in Python Operators

In Python programming, the assignment operator (=) and the comparison operators (== and ===) play crucial roles in managing data and evaluating expressions. Here's a detailed breakdown of their distinct functionalities:

Assignment Operator: =

• Denotes assignment of a value to a variable.
• Sets the variable on the left-hand side to the value on the right-hand side.
• Returns the value assigned to the variable.
• Example: my_variable = 10 assigns the integer 10 to the variable my_variable and returns 10.

Comparison Operators

== (Double Equals):

• Compares two values for equivalence, including comparisons between different types.
• Coerces (converts) the operands to a common type for comparison.
• Returns True if the coerced values are equal and False otherwise.
• Example: 10 == "10" is True because the integer and string are coerced to the same value.

=== (Triple Equals):

• Performs a strict comparison of both the value and type of two operands.
• Does not coerce the operands to a common type.
• Returns True only if both values and types are identical.
• Example: 10 === "10" is False because the operands have different types (integer vs. string).

Choosing the Right Operator

• Use = for assigning values to variables.
• Use == when comparing values for equality, allowing for type coercion.
• Use === when comparing for strict equality, considering both value and type.

By understanding the subtle differences between these operators, you can effectively manage variables, perform precise comparisons, and enhance the accuracy of your Python code.

The above is the detailed content of What's the Difference Between `=`, `==`, and `===` in Python?. For more information, please follow other related articles on the PHP Chinese website!