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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Choosing Python or C depends on project requirements: 1) If you need rapid development, data processing and prototype design, choose Python; 2) If you need high performance, low latency and close hardware control, choose C.

By investing 2 hours of Python learning every day, you can effectively improve your programming skills. 1. Learn new knowledge: read documents or watch tutorials. 2. Practice: Write code and complete exercises. 3. Review: Consolidate the content you have learned. 4. Project practice: Apply what you have learned in actual projects. Such a structured learning plan can help you systematically master Python and achieve career goals.

Methods to learn Python efficiently within two hours include: 1. Review the basic knowledge and ensure that you are familiar with Python installation and basic syntax; 2. Understand the core concepts of Python, such as variables, lists, functions, etc.; 3. Master basic and advanced usage by using examples; 4. Learn common errors and debugging techniques; 5. Apply performance optimization and best practices, such as using list comprehensions and following the PEP8 style guide.

Python is suitable for beginners and data science, and C is suitable for system programming and game development. 1. Python is simple and easy to use, suitable for data science and web development. 2.C provides high performance and control, suitable for game development and system programming. The choice should be based on project needs and personal interests.

Python is more suitable for data science and rapid development, while C is more suitable for high performance and system programming. 1. Python syntax is concise and easy to learn, suitable for data processing and scientific computing. 2.C has complex syntax but excellent performance and is often used in game development and system programming.

It is feasible to invest two hours a day to learn Python. 1. Learn new knowledge: Learn new concepts in one hour, such as lists and dictionaries. 2. Practice and exercises: Use one hour to perform programming exercises, such as writing small programs. Through reasonable planning and perseverance, you can master the core concepts of Python in a short time.

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