Python Beginner Learning Basics function-variable Parameters *

Variable Parameters (*)

Variable parameters, as the name implies, its parameters are variable, such as lists, dictionaries and so On. If we need a function to handle a variable number of parameters, we can use variable Parameters.

When we look at a lot of Python source code, we often see a function (* parameter 1, * * parameter 2) such a function definition, the * parameter and the * * parameter is a variable parameter, for a moment will be a bit confusing. In fact, as long as the definition of variable parameters of the function is clear, it is not difficult to understand.

When we don't know how to define a function with a few parameters, variable parameters can be Used.

In python, the parameter with * is used to accept a variable number of Parameters.

If a function is defined as Follows:

def functiontest (*args): ...      .      ....      ....  

Called when we can call This:

FunctionTest (1)  or  functiontest(  or  functiontest)

You can pass in multiple parameters Later.

Take a look at the example code and see how it applies:

def get_sum (*numbers):      = 0      for in  numbers:          + = N       return sum         # write down your code here to call get_sum for 5 numbers and output this  result Print (get_sum (1,2,3,4,5))  

The result would be?

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Python Beginner Learning Basics function-variable Parameters *