Python function (ii)-parameter passing

The first is to specify the number of parameters to pass, there are two ways to transfer

One is the positional parameter, and the other is the keyword parameter

• Position parameters

Passing parameters according to positional order

#-*-Coding:utf-8-*-__author__ = "MuT6 sch01ar" def Test (a B): #a和b为形参    Print (a)    print (b)    return 0test #1和2为实参

Run results

In order of position, 1 was assigned to the a,2 assignment to B.

• Keyword parameters

Passing parameters according to the value of the formal parameter

#-*-Coding:utf-8-*-__author__ = "MuT6 sch01ar" def Test (a):    print (a)    print (b)    return 0test (b=1,a=2)

Run results

The 1 is directly assigned to the parameter B, and the 2 is directly assigned to the parameter a

• Use both positional and keyword parameters

The positional parameter takes precedence over the keyword parameter when using the positional parameter and the keyword parameter to pass the parameter.

Positional parameters can only be preceded by the keyword parameter

#-*-Coding:utf-8-*-__author__ = "MuT6 sch01ar" def Test (a,b,c):    print (a)    print (b)    print (c)    return 0test (3,c=1,b=2)

Run results

Position parameter 3 to the parameter A, the keyword parameters C and b position order does not matter how much

Python function (ii)-parameter passing