python-First Day

1. Basic knowledge

1.1 Encoding

Python is ASCII-encoded by default and does not support Chinese

Add #coding =utf-8 at the top of the script to enable Python to support Chinese

#!/usr/bin/env python------Specifies the Python interpreter.
#-*-Coding:utf-8-*-------Specify the encoding format of the file UTF8 (python2.7 default is ASC, 3.0 default is UTF8: So 3.0 does not need to specify the encoding format)

1.2 Variables

Definition Requirements:

　　Can only contain numbers, letters, and underscores

Cannot start with a number

Case sensitive

Cannot repeat with keyword

python-First Day