Python3基础-字符串

var1 = 'hello wolrd'var2 = "runoob"print(var2)#python不支持单字符类型，单字符被当做字符串使用；print("var1[0]:",var1[0])#取某个字符print("var2[1:5]:",var2[1:5])#取部分字符串print("var1[:5]:",var1[:5])var2 +=var1 #对字符串进行更改print(var2)#转义字符,同C语言var1 ='hello\\'print(var1)var1="\n"print(var1)var1='\x4A' #16进制print('---')print(var1)#字符串运算str1 = "auto ai"str2 = "auto trade"print(str1+str2)# 连接字符串print(str1*2)#重复输出字符串if ('a' in str1):    print("'a' in str1")if('x' not in str2):    print('x not in str2')print(r"fuck you")print(R"fuck you again")"""格式化字符串"""print('hello ,the string is %s'%('tick'))print('hello ,the string is %s'%(str1))num = 10print('hello ,the string is %s %d'%(str1,num))print(str1.capitalize())