#!/usr/bin/python3
# -*- coding: utf-8 -*-
import random

# 字符串連接運(yùn)算
myStr_a1='51'
myStr_a2='cto'
myStr=myStr_a1+myStr_a2
print('字符串：'+myStr)

# 重復(fù)輸出運(yùn)算符
myStr_b=myStr*6
print('重復(fù)6次輸出字符串：'+myStr * 6)

# 通過下標(biāo)獲取字符串其中一個(gè)字符
index=0
for char in myStr:
index+=1
print('第%s個(gè)：%s' % (str(index),char))

#!/usr/bin/python3
# -*- coding: utf-8 -*-
import random

myStr='51 cto'

# 截取字符串
myStr='51 cto'
print('從下標(biāo)0開始截取到小標(biāo)6結(jié)束的字符串：'+myStr[3:6])

# in運(yùn)算符
str_a='51'
print('%s是否在字符串%s中：%s' % (str_a,myStr,str_a in myStr))

# in運(yùn)算符
str_b='cto'
print('%s是否在字符串%s中：%s' % (str_a,myStr,str_a not in myStr))