str1=\'my name is xxx, my name is 18\'
# print(str1[3])
# print(str1[3:7])
# print(str1[3:10:2])
# print(len(str1))
# print(\'z\' in str1)
# print(\'f\' in str1)
# lstrip与rstrip的用法
# str4=\'***my name is XXX, my age is 18.\'
# str5=\'my name is XXX,my age is 18 ***\'
# print(str4.lstrip(\'*\'))
# print(str5.rstrip(\'*\'))
# 大小写替换
# str6=\'my name is Tank\'
# print(str6.lower())
# print(str6.upper())
#starswitch，endswitch的用法
# print(str1.startswith(\'my\'))
# print(str1.startswith(\'My\'))
# print(str1.endswith(\'my\'))
# print(str1.endswith(\'My\'))
#按照位置替换
# str7=\' my name is {},my age is {}\'
# str7=str7.format(\'tank\',18,111)
# print(str7)
# 方拾贰 安装索引替换
# str7=\' my name is {0},my age is {1}!\'
# str7=str7.format(\'tank\',18,111)
# print(str7)
#方式三 指名道姓替换
# str7=\' my name is {name},my age is {age}!\'
# str7=str7.format(age=18,name=\'Tank\')
# print(str7)
#jion 的用法
# name=\'tank\'
# age=\'18\'
# print(\':\'.join([name,age]))
# replace的用法
# str8=\'old new\'
# str8=str8.replace(\'old\',\'python\')
# print(str8)
# ID=input (\'请输入ID\')
# print(ID)
# print(type(ID))
# print(ID.isdigit())
#删除
list1 = {\'Tank\', 18, \'male\', 3.0}
print(list1.pop())
print(list1.pop(0))
作业
ame=" aleX"
#1)移除name变量对应值俩边的空格并输出
name=name.strip()
print(name)
#2）判断是否以“al”开头
print(name.startswith("al"))
#3)判断是否以“X”结尾
print(name.endswith("X"))
#4)将“l”替换成“p”
name1=name.replace("l","p")
print(name1)
#5)按“l”分割
print(name.split("l"))
#6)变为大写
print(name.upper())
#7)变为小写
print(name.lower())
#8)输出name的第二个字符
print(name[1])
#9)输出name的前三个字符
print(name[0:3])
#10)输出后两个字符
print(name[-3:-1])
#11)输出“e”所在的索引位置
print(name.find("e"))
#12）获取子序列，去掉最后一个字符
print(name[0:-1])