Python Basics 002

1. Module

Classification:

1. Third-party libraries need to be installed

2. Standard library, no installation can be used directly

Importing: Import module name

For example: Import sys

Print (SYS.ARGV) Pass parameters

Print (sys.path) environment variables

Third-party inventory placement: Site-pakages

Standard Stock Placement: Lib folder

Import OS

Cmd_res = Os.popen ("df-g") Execute system command

Print (Cmd_res.read ()) returns the desired result

Os.mkdir (' test ') Create folder

2. Character transcoding

Python3 Default to Unicode encoding

Utf-8 format into binary format

Prin (' I love you '. Encode (encodding= ' utf-8 '))

Python Basics 002