最新《java爬虫实战项目httpclient hbase springmvc solr》

s = 'ABCDEF'
#索引
s1 = s[0]
s2 = s[-1]
s3 = s[0:4]
print(s1) #A
print(s2) #F
print(s3) #ABC,左闭右开
 
#打印全部
s4 = s[:] #s[0:]
print(s4)
 
s5 = s[0:5:2]
print(s5) #ACE
 
s6 = s[3::-1]
print(s6) #DCBA
 
#倒置
s7 = s[::-1]
print(s7) #FEDCBA
s = 'alxeaAa'
#首字母大写
s1 = s.capitalize()
print(s1)
 
s2 = s.upper() #全部大写
s21 = s.lower() #全部小写
print(s2,s21)
 
s3 = s.swapcase()#反转大小写
print(s3)
 
#每个首字母大写
s4 = 'abc asc asd'
s5 = s4.title()
print(s5)
s = 'alxeaAa'
#首字母大写
s1 = s.capitalize()
print(s1)
 
s2 = s.upper() #全部大写
s21 = s.lower() #全部小写
print(s2,s21)
 
s3 = s.swapcase()#反转大小写
print(s3)
 
#每个首字母大写
s4 = 'abc asc asd'
s5 = s4.title()
print(s5)
s = 'alxeaAa'
#首字母大写
s1 = s.capitalize()
print(s1)
 
s2 = s.upper() #全部大写
s21 = s.lower() #全部小写
print(s2,s21)
 
s3 = s.swapcase()#反转大小写
print(s3)
 
#每个首字母大写
s4 = 'abc asc asd'
s5 = s4.title()
print(s5)