1. Basic usage: name = "Alice" age = 25 message = "My name is {} and I am {} years old this year." . Format (name, age) Print (message) My name is Alice and I'm 25 years old.
2. Insert the value in the specified location: python copy code message = "My name is {0} and I am {1} years old this year." . Format ("Bob ",30) print (message) csharp Copy code My name is Bob, and I am 30 years old.
3. Use keyword parameters to insert values: python copy code message = "My name is {name} and I am {age} years old." . Format (name = "Charlie ",age = 35) print (message) csharp copy code My name is Charlie, and I'm 35 years old.
4. Format number: Python copy code pi = 3.14159 formatted _ pi = "The value of pi is {:.2f}". The value of format (pi) print (formatted _ pi) csharp copy code pi is 3. 14.
5. Format date: python copied the code from datetime and imported datetime today = datetime. Today () formatted _ date = "Today's date is {:%y-%m-%d}". Format (today). Print(formatted_date) math copy code Today's date is June 3, 2023.
Advantages of python language
1, concise and easy to read: Python uses concise and clear syntax, and the code is easy to write and read. It emphasizes readability and makes it easier for team members to collaborate and maintain code. Python's grammatical structure is clear and concise, which reduces redundant grammatical elements and enables developers to focus more on problem solving.
2. High development efficiency: Python provides rich standard libraries and third-party libraries, covering various functions and tasks. These libraries provide a large number of ready-made modules and functions, enabling developers to build applications quickly without writing all the code from scratch. In addition, Python has a dynamic type system and automatic memory management, which reduces the workload of developers.
3. Wide application: Python is widely used in various fields, such as scientific calculation, data analysis, artificial intelligence, machine learning, Web development and so on. It is a general programming language, which is suitable for all kinds of tasks and projects. Python has a powerful ecosystem of libraries and tools, providing rich solutions and support.