In Python, you can reference a function by using its name without parentheses. This is useful when you want to pass a function as an argument to another function, or when you want to assign a function to a variable.
Here's an example of referencing a function:
def add(a, b): return a + bdef apply_operation(operation, a, b): return operation(a, b)result = apply_operation(add, 4, 2) # result = 6 |
In this example, we define a function add() that takes two arguments and returns their sum. We also define a function apply_operation() that takes a function as its first argument, followed by two input values a and b. The apply_operation() function then calls the input function with the input values and returns the result.
Finally, we call the apply_operation() function with add as the input function and input values 4 and 2. This results in 6 being returned, which is the sum of 4 and 2.
Note that when you reference a function without parentheses, you are not actually calling the function. Instead, you are passing a reference to the function itself, which can be stored in a variable, passed as an argument to another function, or used in any other way that you would use a regular variable.