python学习之字符串转换

配置环境：python 3.6   python编辑器：pycharm

代码如下：

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

def strcase():
    "字符串大小写转换"
    print("演示字符串大小写转换")
    print("演示字符串s赋值为：'  this is a python  '")
    s = '  this is a python  '
    print("大写转换成小写：\ts.lower() \t= %s"%(s.lower()))
    print("小写转换成大写：\ts.upper() \t= %s"%(s.upper()))
    print("大小写转换：\t\ts.swapcase() \t= %s"%(s.swapcase()))
    print("首字母大写：\t\ts.title() \t= %s"%(s.title()))
    print('\n')


def strfind():
    "字符串搜索、替换"
    print("演示字符串搜索、替换等")
    print("演示字符串s赋值为：'  this is a python  '")
    s = '  this is a python  '
    print("字符串搜索：\t\ts.find('is') \t= %s"%(s.find('is')))
    print("字符串统计：\t\ts.count('s') \t= %s"%(s.count('s')))
    print("字符串替换：\t\ts.replace('is','is') = %s"%(s.replace('is','is')))
    print("去左右空格：\t\ts.strip() \t=#%s#"%(s.strip()))
    print("去左边空格：\t\ts.lstrip() \t=#%s#"%(s.lstrip()))
    print("去右边空格：\t\ts.rstrip() \t=#%s#"%(s.rstrip()))
    print('\n')


def strsplit():
    "字符串分割、组合"
    print("演示字符串分割、组合")
    print("演示字符串s赋值为：'  this is a python  '")
    s = '  this is a python  '
    print("字符串分割：\t\ts.split() \t= %s"%(s.split()))
    print("字符串组合1： '#'.join(['this','is','a','python']) \t= %s"%('#'.join(['this','is','a','python'])))
    print("字符串组合2： '$'.join(['this','is','a','python']) \t= %s"%('$'.join(['this','is','a','python'])))
    print("字符串组合3： ' '.join(['this','is','a','python']) \t= %s"%(' '.join(['this','is','a','python'])))
    print('\n')

def strtest():
    "字符串测试"
    print("演示字符串测试")
    print("演示字符串s1赋值为：'abcd'")
    s1 = 'abcd'
    print("测试s.isalpha() = %s"%(s1.isalpha()))
    print("测试s.isdigit() = %s"%(s1.isdigit()))
    print("测试s.isspace() = %s"%(s1.isspace()))
    print("测试s.islower() = %s"%(s1.islower()))
    print("测试s.isupper() = %s"%(s1.isupper()))
    print("测试s.istitle() = %s"%(s1.istitle()))

if __name__ == '__main__':
    strcase()
    strfind()
    strsplit()
    strtest()