Python字符串格式化

1、常用百分号格式化方式：

STRING = "I am %s" %"alex"

STRING = "I am %s age %d" %("alex", 18)

STRING = "I am %(name)s age %(age)d" %({"name": "alex", "age": 18})

STRING = "percent %.2f" %99.97623

STRING = "I am %(pp).2f" %{"pp": 123.425556}

STRING = "I am %(pp).2f %%" %{"pp": 123.425556}

2、常用format格式化方式：

STRING = "I am {}, age {}, {}".format("seven", 18, 'alex')

STRING = "I am {}, age {}, {}".format(*["seven", 18, 'alex'])

STRING = "I am {0}, age {1}, really {0}".format("seven", 18)

STRING = "I am {0}, age {1}, really {0}".format(*["seven", 18]) 

STRING = "I am {name}, age {age}, really {name}".format(name="seven", age=18)

STRING = "I am {name}, age {age}, really {name}".format(**{"name": "seven", "age": 18})

STRING = "I am {0[0]}, age {0[1]}, really {0[2]}".format([1, 2, 3], [11, 22, 33])
  
STRING = "I am {:s}, age {:d}, money {:f}".format("seven", 18, 88888.1)
  
STRING = "I am {:s}, age {:d}".format(*["seven", 18])
  
STRING = "I am {name:s}, age {age:d}".format(name="seven", age=18)
  
STRING = "I am {name:s}, age {age:d}".format(**{"name": "seven", "age": 18})
 
STRING = "numbers: {:b},{:o},{:d},{:x},{:X}, {:%}".format(15, 15, 15, 15, 15, 15.87623, 2)
 
STRING = "numbers: {:b},{:o},{:d},{:x},{:X}, {:%}".format(15, 15, 15, 15, 15, 15.87623, 2)
 
STRING = "numbers: {0:b},{0:o},{0:d},{0:x},{0:X}, {0:%}".format(15)
 
STRING = "numbers: {num:b},{num:o},{num:d},{num:x},{num:X}, {num:%}".format(num=15)

3、python脚本指定编码的两种方式

#!/usr/bin/python
# coding=utf-8

#!/usr/bin/python
# -*- coding: utf-8 -*-

参考链接：
          https://www.cnblogs.com/czqq/p/6108557.html
          https://www.cnblogs.com/exusll/p/6393621.html?utm_source=tuicool&utm_medium=referral      #字符串操作
          https://www.crifan.com/python_head_meaning_for_usr_bin_python_coding_utf-8/