Python QuickStart (1)

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PYTHON-PEP8 Official Code Style guide

Google-python Code Style Guide

The Python source code format check under Linux:

$ sudo apt-get update

$ sudo apt-get install PEP8

PEP8 Check File source code format error:

$ PEP8 file_name.py

Source code: Use UTF8 encoding by default:

#-*-Coding:utf-8-*-

In a BSD-like Unix system, Python can execute directly as a shell, specifying files and schemas in the first line of the script file:

#! /usr/bin/env python

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String:

"" "or" "" "": using three quotation marks, you can indicate a multiline string. You can use single and double quotation marks freely in three quotes.

Escape character \: Escaped ' & ' & \

In a string, a single backslash at the end of the line indicates that the string continues on the next line instead of starting a new row.

Natural strings: If you want to indicate certain strings that do not require special handling such as escape characters, then you need to specify a natural string. Natural strings are specified by prefixing the string with R or R.

For example r"Newlines are indicated by \n" .

Be sure to use a natural string to process the regular expression . Otherwise, you will need to use a lot of back slashes.

Unicode string: Use non-English text, plus u or u before the string.

Cascading strings: Put two strings in a literal order, and they will be automatically cascaded by Python.

For example, ‘What\‘s‘ ‘your name?‘ it will be automatically converted "What‘s your name?" .

Python QuickStart (1)