python之代码积累 100行

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s1=‘‘
print(bool(s1)) #False
s1=‘ ‘
print(bool(s1)) #True
name=input(‘>>>‘)
if name:
    print(‘666‘)
else:
    print(‘333‘)
print(str(True),str(False)) #True False
print(type(True),type(False)) #<class ‘bool‘> <class ‘bool‘>
s1=‘python1期骑士计划‘
s2=s1[0]
print(s2,type(s2)) #p <class ‘str‘>
s3=s1[-1]
print(s3) #划
s5=s1[0:6]
s6=s1[:6]
s7=s1[6:]
s8=s1[:5:2]
s9=s1[1::2]
print(s5)  #python
print(s6)  #python
print(s7)  #1期骑士计划
print(s8)  #pto
print(s9)  #yhn期士划
name=‘oldBay‘
print(name.capitalize()) #Oldbay
print(name.center(20,‘*‘)) #*******oldBay*******
print(name.upper()) #OLDBAY
print(name.lower())  #oldbay
username=input(‘请输入 用户名:‘)
code=‘ADfer‘.upper()
your_code=input(‘请输入验证码:‘).upper()
if username==‘alex‘ and your_code==code:
    print(‘账号密码及验证码输入正确‘)
name=‘pYtHon‘
print(name.startswith(‘o‘)) # False
print(name.startswith(‘pY‘)) # False
print(name.startswith(‘Y‘,1)) # True
print(name.startswith(‘Yt‘,1,5)) # True
print(name.startswith(‘pYtHon‘) )# True
print(name.endswith(‘n‘)) #True
print(name.endswith(‘on‘)) #True
print(name.endswith(‘n‘,5)) #True
print(name.endswith(‘on‘,1,6)) #True
print(name.endswith(‘pYtHon‘)) #True
print(name.swapcase()#PyThON
s1 = ‘alex wusir*taibai6nvshen‘
print(s1.title()) #Alex Wusir*Taibai6Nvshen
name=‘ olDboY ‘
name1=‘*alex**‘
print(name.find(‘b‘)) #3
print(name.find(‘lD‘)) #1
print(name.find(‘w‘)) #-1
print(name.find(‘D‘,1,-1)) #2
print(name.index(‘b‘)) #3
print(name.index(‘lD‘)) #
# print(name.index(‘w‘)) #报错
print(name.index(‘D‘,1,-1)) #2
print(name.strip()) #olDboY
print(name.lstrip()) #olDboY
print(name.rstrip()) #olDboY
print(name1.strip(‘*‘)) #alex
name2=‘weralexwqwe‘
print(name2.strip(‘erw‘)) #alexwq
name=‘  oldBody  ‘
print(name.lstrip())
print(name.rstrip())
username=input(‘请输入用户名:‘).strip()
if username==‘alex‘:
    print(‘登陆成功....‘)
s1=‘ alex wusir taibai‘
l1=s1.split()
print(l1) #[‘alex‘, ‘wusir‘, ‘taibai‘]
s=‘alex, wusir, taibai‘
print(s.split(‘,‘)) #[‘alex‘, ‘ wusir‘, ‘ taibai‘]
s3=‘,alex,wusir,taibai‘
print(s3.split(‘,‘)) #[‘‘, ‘alex‘, ‘wusir‘, ‘taibai‘]
s5=‘alexlwle‘
print(s5.split(‘l‘,1)) #[‘a‘, ‘exlwle‘]
s5=‘alexlwle‘
print(s5.rsplit()) #[‘alexlwle‘]
str1=‘alex‘
s2=‘*‘.join(str1)
print(s2) #a*l*e*x
str2=‘alex是创始人,alex很厉害,alex很帅‘
s3=str2.replace(‘alex‘,‘艾利克斯‘)
print(s3) #艾利克斯是创始人,艾利克斯很厉害,艾利克斯很帅
s3=str2.replace(‘alex‘,‘艾利克斯‘,1)
print(s3) #艾利克斯是创始人,alex很厉害,alex很帅
s1=‘我叫{},今年{},性别{}‘.format(‘小甲鱼‘,‘22‘,‘男‘)
print(s1)
s2=‘我叫{0},今年{1},性别{2},我依然叫{0}‘.format(‘小甲鱼‘,‘22‘,‘男‘)
print(s2)
s3=‘我叫{name},今年{age},性别{sex}‘.format(age=‘22‘,sex=‘男‘,name=‘小甲鱼‘)
print(s3)
name=‘taibai123‘
name1=‘a123‘
print(name.isalnum())
print(name1.isdigit())
print(name.isalpha())
name=‘alexaaa‘
print(name.count(‘a‘)) #4
print(len(name)) #7
s1 = ‘skdqwewwwwwdffkkbbdjdsbhdhs‘
i=0
while i<len(s1):
    print(s1[i])
    i+=1
for  i in s1:
    print(i)
for i in s1:
    print(666)

  

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