5 Commonly Used Built-In Python Modules

Learn the 5 commonly used built-in python modules that every python developer should learn.

1. User Argument
Capturing user arguments or inputs is very common in all application development. Parser module is very easy to use and get you started quickly. Also, learn about Argumentparser, a sub module of the Parser module, and its usage.

2. File and Directory
Another commonly perform action is file and directory processing. Some processing examples are file/directory creation, moving, deletion, and listing. Check out the OS and Shutil modules. They provide many functionalities to perform robust operations at OS level.

3. Multiprocessing
Parallel processing or multi processing is an important topic to learn. The modern applications are executed in multi core machines so learning to make best use of them is critical. Check out the multiprocessing module specially the Pool submodule.

4. Command Execution
On an occasional basis, you will need to execute command at the terminal level. A simple example would be executing shell or batch script. Learn the usage of subprocess module and look into Popen submodule of subprocess to get started.

5. File Input/Output
Reading and writing ascii or text files is very common when it comes to modern application. Modules like with and csv allow to process the files providing flexibility for different delimiters.

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