python实训day1

╰+攻爆jí腚メ 2021-12-07 11:59 303阅读 0赞

作业：

# （1）移除name变量对应的值两边的空格
    name =" aleX"
    print(name.strip())
    # （2）判断name变量对应的值是否以"al"开头，并输出结果
    # 此时是以空格为开头
    print(name.startswith("al"))
    # （3）判断name变量对应的值是否以"x"结尾，并输出结果
    print(name.endswith("X"))
    # （4）将name变量对应的值中的"1"替换为"p",并输出结果
    name=name.replace("l","p")
    print(name)
    # （5）将name变量对应的值根据"1"分割，并输出结果
    list=name.split('l')
    print(list)
    list1=name.split('p')
    print(list1)
    # （6）将name变量对应的值变大写，并输出结果
    print(name.upper())
    # （7）将name变量对应的值变小写，并输出结果
    print(name.lower())
    # （8）请输出name变量对应的值的第2个字符
    print(name[2])
    # （9）请输出name变量对应的值的前3个字符
    print(name[0:4])
    # （10）请输出name变量对应的值的后2个字符
    print(name[2:4])
    # （11）请输出name变量对应的值的"e"所在的索引的位置
    print(name.find('e'))
    # （12）获取子序列，去掉最后一个字符，如oldboy则获取oldbo
    print(name[0:len(name)-1])

![1713397-20190611224336066-157652976.png][]

总结：

# 数字类型
    
    # 整型int
    # number = 100  # int(100)
    # number2 = int(100)
    # print(number)
    # print(number2)
    
    
    # 浮点型 float
    # sal = 15.0  # float(15.0)
    # sal2 = float(15.0)
    # print(sal)
    # print(sal2)
    
    
    # 字符串类型
    # name = 'tank'
    # name2 = "tank"
    # content = '''
    # 1r1r1r
    # 21r12r1
    # r12r
    # 12r1r21
    # r12r1r2
    # 12r1r
    # '''
    #
    # print(name, name2, content)
    
    # python中字符串可以相加、相乘
    # print('tank ' * 5)
    # print('tank' + 'jam')
    # print('tank', 'jam')
    
    
    # 列表类型
    # []括号内以逗号隔开，可存放多个不同类型的值。
    # list1 = ['张曼曼', 'tank', '涂懿磊', 11, 1.0, ['jason', 200]]
    # print(list1[0])
    # print(list1[5][0])
    
    # 字典类型
    # 在{}内，都逗号隔开，可存放多个值，每个值以key: value的形式存储
    # 存
    # dict1 = {'name': "tank", "age": 18}  # {name="tank", "age"=18}
    
    # 取
    # print(dict1["name"])
    
    
    # 布尔类型
    # True or False
    # print(10 == 10)  # True
    # print(10 == 11)  # False
    
    # 注意: 所有数据类型都自带布尔， 0、None、空都为False
    # if 0:
    #     print('111')
    #
    # if None:
    #     print('111')
    #
    # if []:
    #     print('111')
    #
    # else:
    #     print('222')
    
    
    
    # 格式化输出
    # 可以在输出时给字符串类型做一次替换
    # %s占位符，%d可以替换数字类型
    # number = input('请输入:')
    # str1 = '''
    # 尊敬的用户，您的话费余额为%s元。
    # ''' % number
    #
    # print(str1)
    
    
    # for循环
    # list1 = [1, 2, 3, 4, 5]
    # for line in list1:
    #     print(line)
    
    # for line in range(1, 10):
    #     print(line)
    
    # dict1 = {'name': "tank", "age": 18}
    # for key in dict1:
    #     print(key)
    #     print(dict1[key])

![复制代码][copycode.gif]

# '''
    # str1='my name is xxx,my age is 18'
    # #祛除左右空格strip
    # print(str1)
    # print(str1.strip())
    # #切分split
    # list2=str1.split(' ')
    # print(list2)
    # str2='my name is xxx,my age is 18'
    # for line in str2:
    #     print(line,end=" ")
    # str6 = 'my name in Tank'
    # print(str6.lower())
    # print(str6.upper())#lower 小写    upper 大写
    # print(str6.startswith('my')) #startswith   判断前面  endswith 判断后面
    # print(str6.startswith('My'))
    # print(str6.endswith('tank'))
    # #fomat 三种玩法
    # str7 = 'my name in {}，my age is{}'
    # str7=str7.format('tank',18)
    # print(str7)
    #
    # str7='my name in {1}，my age is{2}'
    # str7=str7.format('tank',18,111)
    # print(str7)
    #
    # str7='my name in {name}，my age is{age}'
    # str7=str7.format(name='tank',age=18)
    # print(str7)
    # '''
    # # join 对列表中的数据按照某种标识拼接 拼接要为字符串类型
    # name ='tank'
    # age='20'
    # print(':'.join([name,age]))
    # #replace
    # str8 ='old new'
    # str8=str8.replace('old','new')
    # print(str8)
    # #isdigit 判断字符串是否为数字
    # ID =input('请输入')
    # print(ID)
    # print(ID.isdigit())
    list1=['tank',18,'womale',3.0,9]
    print(list1[4])
    print(list1[-2])
    
    
    # '''
    # str1='my name is xxx,my age is 18'
    # #祛除左右空格strip
    # print(str1)
    # print(str1.strip())
    # #切分split
    # list2=str1.split(' ')
    # print(list2)
    # str2='my name is xxx,my age is 18'
    # for line in str2:
    #     print(line,end=" ")
    # str6 = 'my name in Tank'
    # print(str6.lower())
    # print(str6.upper())#lower 小写    upper 大写
    # print(str6.startswith('my')) #startswith   判断前面  endswith 判断后面
    # print(str6.startswith('My'))
    # print(str6.endswith('tank'))
    # #fomat 三种玩法
    # str7 = 'my name in {}，my age is{}'
    # str7=str7.format('tank',18)
    # print(str7)
    #
    # str7='my name in {1}，my age is{2}'
    # str7=str7.format('tank',18,111)
    # print(str7)
    #
    # str7='my name in {name}，my age is{age}'
    # str7=str7.format(name='tank',age=18)
    # print(str7)
    # '''
    # # join 对列表中的数据按照某种标识拼接 拼接要为字符串类型
    # name ='tank'
    # age='20'
    # print(':'.join([name,age]))
    # #replace
    # str8 ='old new'
    # str8=str8.replace('old','new')
    # print(str8)
    # #isdigit 判断字符串是否为数字
    # ID =input('请输入')
    # print(ID)
    # print(ID.isdigit())
    list1=['tank',18,'womale',3.0,9]
    print(list1[4])
    print(list1[-2])
    print(list1[1:5:2])
    
    print(len(list1))
    #追加 append()
    list1.append('sjkd')
    print(list1)
    #删除 pop()默认最后一个-1
    print(list1.pop())
    print(list1.pop(0))
    print(list1)
    list1.
    #循环

转载于:https://www.cnblogs.com/wangtianen/p/11006783.html

[1713397-20190611224336066-157652976.png]: /images/20211207/65527285b71d4902925aca01dd55f270.png
[copycode.gif]: /images/20211207/7d62a305feb34d38acda8e247af48c33.png