a=input("输入一个手机号：")
if len(a) != 11 or (not a.isdigit()):
print("号码不规范")
else:
b=a[0:3]
if b == '139':
print("移动")
elif b == '186':
print("联通")
elif b == '189':
print("电信")
elif b == '199':
print("广电")
else:
print("号码错误，无法判断")
a=input("请输入英寸或者厘米：")
e=a[::-1]
r=e[0:2]
if "米厘" == r:
o=a.replace("厘米",'')
p=float(o)
b = p / 2.54
print(b,"英寸")
elif "寸英" == r:
o=a.replace("英寸",'')
p=float(o)
b=p*2.54
print(b,"厘米")
else:
print("格式错误")
#分段函数
x=int(input("输入一个数"))
if x>1:
a=3*x-5
print("f(x)的值为：",a)
elif x<-1:
a=5*x+3
print("f(x)的值为：",a)
else:
a=x+2
print("f(x)的值为：",a)
#验证账号密码
x=input("请输入账号：")
y=input("请输入密码：")
if x!="admin":
print("账号或者密码错误")
else:
if y != "123456":
print("账号或者密码错误")
else:
print("验证成功")
#逐一显示制定字典中的所有的键，并在显示结束之后输出总键数
a={'name':'琪琪','age':12,'qq':123456789,'add':"内蒙古"}
print(a.keys(),len(a.keys()))
list1 = [1,2,3,4,5,6,7]
list2 = ['Sun','Mon','Tue','Wed','Thu','Fri','Sat']
dict2={}
i=0
for i in range(7):
a=list1[i]
dict2[a]=list2[i]
i=i+1
print(dict2)
a=[11,22,33,44,55,66,77,88,99,100,110,200,230,330]
k1=a[6:]
k2=a[:5]
key={"大于66":k1[0:],"小于等于66":k2[0:]}
print(key)
