What are the commonly used python standard libraries? 10 commonly used python standard libraries

In the world of programming, Python has won the favor of developers because of its simplicity, readability and powerful functions. The Python standard library is a set of built-in modules of the Python programming language. They provide a large number of basic functions and tools to help developers write code more efficiently. So, what are the commonly used Python standard libraries? This article will introduce 10 commonly used Python standard libraries for you to make your programming more convenient.

What is Python standard library

The Python standard library is a set of modules and functions that come with the Python programming language. They provide developers with a large number of basic functions that can be used without additional installation. These standard libraries cover file operations, network programming, system calls, data processing, encryption and decryption, mathematical operations, date and time processing, regular expression matching and other aspects, providing great convenience for Python programmers.

Functions of Python standard library

Provide basic functions: the standard library contains modules for processing various basic tasks, such as file operation, system call, network programming, string processing, data structure and algorithm. These functions are often used in the development process, so they are built into the standard library without additional installation or configuration.

Simplify common tasks: By using the modules in the standard library, programmers can easily perform common programming tasks, such as reading and writing files, sending HTTP requests, parsing JSON data, and processing dates and times. These modules provide simple and easy to use APIs, enabling programmers to focus on implementing business logic rather than repeatedly writing basic code.

Optimizing performance: modules in the standard library have been extensively tested and optimized, and usually have excellent performance and stability. This means that when using standard libraries, programmers can rely on their efficient and reliable performance without worrying about potential performance problems or memory leaks.

Cross platform compatibility: Cross platform compatibility is considered in the design of the standard library, so that programs can run on different operating systems without a lot of modifications. This is particularly important for applications that require cross platform deployment.

Enhance code readability and maintainability: Using the functions and modules in the standard library can make the code more concise and clear, and improve the readability of the code. In addition, because the standard library is widely used, other developers can also more easily understand and maintain the code written using the standard library.

Extension and customization: Although the standard library provides a lot of basic functions, programmers can still extend or customize the standard library to meet specific needs. For example, you can write custom modules to extend the functions of the standard library, or use the interfaces provided by the standard library to customize the behavior of existing functions.

10 commonly used python standard libraries

Os: provides the function of interacting with the operating system, and can realize the operation of files and directories, process management, etc.

Sys: provides the function of interacting with the Python interpreter, which can obtain the information of the Python interpreter, such as version number, command line parameters, etc., and control the Python interpreter, such as exiting the program, obtaining exception information, etc.

Re: It is used to process regular expressions. It can implement operations such as string matching and replacement. It is used in complex string processing scenarios.

Datetime: provides the date and time processing function, which can calculate and format the date and time.

Json: used to process JSON formatted data, serialize Python objects into JSON strings or deserialize JSON strings into Python objects.

Math: It provides the function of mathematical operation, including trigonometric function, logarithm, exponent, etc.

Random: used to generate random numbers, including integer and floating point numbers.

Collections: provides additional container data types, such as Counter Deque (double ended queue), etc., enhances the collection function of Python.

Hashlib: used to provide common hash algorithms, such as MD5 SHA1, etc., used for data encryption and security verification.

Urllib: used for network requests, which can easily send HTTP requests and process responses.

The 10 Python standard libraries described above are just the tip of the iceberg, The Python standard library also contains many other powerful modules for developers to explore and use. Mastering these common standard libraries can not only improve the programming efficiency, but also make the code more concise, readable and maintainable. As a Python developer, it is necessary to deeply study and master these standard libraries.