python3

列表

获取复杂数据结构里面的元素信息


'''
# list1=[[1,2,3],['a','b','c']]
# print(list1[0][2])
# print(list1[1][2])

 

list3=[[1,2,3],['a','b','c',["Go",["Python"]]]]

# print(list3[1][3][0])
#
# print(list3[1][3][1][0])

 

list1=[[1,2,3],['a','b','c']]

list3=[[1,2,3],['a','b','c',["Go",["Python"]]]]

list9=[1,2,3,4,5,6,7,8,9]
# print(len(list3))
# print(len(list1))
# print(len(list9))

 

 

list1=["Go","Python","Java","Net","PHP"]
# #只输出列表中的前两位
# print(list1[0:2])
# print(list1[0:4])

 

 

 

list1=["Go","Python","Java","Net","PHP"]

 # 输出python到php

print(list1[1:5])

# print(list1[1:])

 

# 输出最后一位
print(list1[-1])
for list7 in list1:
    print(list7)

 

 

 

今日练习

 

while True:
    money=int(input('请输入价钱\n'))
    if money<60:
        print('便宜')
    elif money>=60 and money<100:
        print('中等')
    elif money==100:
        print('贵')
    else:
        print('价格到位')
        break

 

while True:
    mima=int(input('请输入密码\n'))
    if  mima!=986435233:
        print('密码错误')
    elif mima == 986435233:
        print('密码正确')
        break

 

while True:
    Verification=int(input('请输入验证码\n'))
    if Verification!=1314:
        print('验证码错误')
    elif Verification==1314:
        print('验证码正确')
        break

 

 

while True:
    name=str (input('请输入名字\n'))
    if name!='段舒元':
        print('名字错误')
    elif name=='段舒元':
        print('名字正确')
        break

 

while True:
    shu=float(input('请输入薪资\n'))
    if shu!=1314.66:
        print('薪资错误')
    elif shu==1314.66:
        print('薪资正确')
        break

 

 

练习字符串

 

name='   duan shu yuan   '
print(name.upper())
print(name.upper().islower())
print(name.lower())
print(name.lower().isupper())
print(name.startswith('d'))
print(name.endswith('n'))
print(name.find('8'))
print(len(name))
print(name.index('u'))
print(name.replace('duan','yuan'))
print(name.strip())
for name1 in name:
    print(name1)
print(name.split(' '))
name2=' '.join(name.split(' '))
print(name2)

 

 

 

phone='  xiao  mi   '
print(phone.upper())
print(phone.isupper())
print(phone.lower())
print(phone.lower().islower())
print(phone.startswith(' '))
print(phone.endswith(' '))
print(len(phone))
print(phone.find('o'))
print(phone.index(' '))
print(phone.replace(' ','xiao'))
print(phone.strip())
for phone1 in phone:
    print(phone1)
print(phone.split('xiao'))
phone2='xiao'.join(phone.split('xiao'))
print(phone2)

 

book='Python'
print(book.upper())
print(book.islower())
print(book.lower().islower())
print(book.startswith('b'))
print(book.endswith('k'))
print(book.find('p'))
print(len(book))
print(book.index('t'))
print(book.replace('P','p'))
print(book.strip())
for book1 in book:
    print(book1)
print(book.split('y'))
book2=','.join(book.split('t'))
print(book2)

 

clothes=' adidas'
print(clothes.upper().isupper())
print(clothes.lower().islower())
print(clothes.startswith(' '))
print(clothes.endswith('s'))
print(len(clothes))
print(clothes.find('i'))
print(clothes.strip())
print(clothes.index('d'))
print(clothes.replace('d','D'))
for clothes1 in clothes:
    print(clothes1)
print(clothes.split('i'))
clothes2=','.join(clothes.split('i'))
print(clothes2)

 

dog='er ha'
print(dog.upper().islower())
print(dog.lower().isupper())
print(dog.startswith('e'))
print(dog.endswith('a'))
print(dog.find('h'))
print(len(dog))
print(dog.index('a'))
print(dog.strip())
print(dog.replace('e','E'))
for dog1 in dog:
    print(dog1)
print(dog.split(' '))
dog2=','.join(dog.split(' '))
print(dog2)

 

app='pycharm'
print(app.upper())
print(app.lower())
print(app.islower())
print(app.isupper())
print(app.startswith('p'))
print(app.endswith('m'))
print(len(app))
print(app.strip())
print(app.replace('p','P'))
print(app.split('c'))
app1=','.join(app.split('c'))
print(app1)
for app2 in app:
    print(app2)

 

练习列表


加减

hao=[5,7,9,3,8,15,0,'r','y']
hao.append(5)
hao.insert(4,20)
hao.remove('r')
hao.remove('y')
print(hao)
print(hao.pop())

# 复制 查看 修改  查看索引  查看元素的个数  清空
hao1=hao.copy()
print(hao1)
print(hao1[5])
hao1[2]=1314
print(hao1)
print(hao1.index(8))
print(hao1.count(5))
hao1.clear()
print(hao1)
hao.extend(hao1)
print(hao)
hao.reverse()
print(hao)
hao.sort(reverse=True)
print(hao)
hao.sort()
print(hao)
hao3=[[1,2,3,4],['e','r','p',['h','g',['t','y']]]]
print(hao3[1][3][2][1])
hao4=[[1,2,3],[4,5,6],[7,8,9]]
print(hao4[2][1])
hao5=[1,2,3,[5,3,6,8,[5,6,8,9,7]]]
print(hao5[3][4][3])
print(len(hao3))
print(len(hao4))
print(len(hao5))
print(hao[0:2])
print(hao[3:6])
print(hao[2:])
print(hao[-1])