几个常用方法
str.title()
str.upper()
str.lower()
len(str)
两种方法的区别 一种在前面 一种在后面
str.title() 没有影响原来的字符串,给你一个新的字符串
str.title() 把首字母大写
m5 = "my nAme is siki"
m6 = m5.title()
m7 = m5.upper()
m8 = m5.lower()
print(m5)#my nAme is siki
print(m6)#My Name Is Siki
print(m7)#MY NAME IS SIKI
print(m8)#my name is siki
str.title()把首字母变成大写
str.upper()把所有字母变成大写
str.lower()把所有字母变成小写
len(str)取得字符串的长度
m5 = "my nAme is siki"
m6 = m5.title()
m7 = m5.upper()
m8 = m5.lower()
print(m5)#my nAme is siki
print(m6)#My Name Is Siki
print(m7)#MY NAME IS SIKI
print(m8)#my name is siki
length = len(m5)
print(length)#15
m = "Hello World"
m2 = 'Hello World'
m3 = 'i "like" you'
m4 = "I'm fine"
#m5 = 'my name \' is " siki'
m5 = "my nAme is siki"
m6 = m5.title()
m7 = m5.upper()
m8 = m5.lower()
print(m5)#my nAme is siki
print(m6)#My Name Is Siki
print(m7)#MY NAME IS SIKI
print(m8)#my name is siki
length = len(m5)
print(length)#15
length1 = len("hello")
print(length1)#5