Default parameter usage of Python functions

Explanation

1. The formal parameter specifying a default value must be at the end of all parameters without a default value, otherwise a syntax error will occur.

No need to pass in default value parameters. If default parameters are passed in, the default values ​​will be overwritten.

2. When using this format to define a function, the formal parameters specified with default values ​​must be at the end of all parameters without default values, otherwise a syntax error will occur.

Examples

def enroll(name, gender, age=6, city='Beijing'):
    print('name:', name)
    print("gender:", gender)
    print("age:", age)
    print("city:", city)
 
print(enroll('张三', '一年级'))
print('************************** ')
print(enroll('李四', '二年级', 7))

What are the advantages of Python

1. Simple and easy to use, compared with traditional languages ​​such as C/C, Java, and C# , Python’s requirements for code format are not so strict;

2. Python is open source, everyone can see the source code, and can be transplanted and used on many platforms;

3 , Python is object-oriented and can support process-oriented programming and object-oriented programming;

4. Python is an interpreted language. Programs written in Python do not need to be compiled into binary code and can be run directly from source code. Program;

5. Python is powerful and has many modules, which can basically realize all common functions.

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