s = input("请输入一个数字")
print("s是个小于10的数字" if int(s)<10 else "s是大于10的数字")
print("请输入3个数:")
x=int(input("x= "))
y=int(input("y= "))
z=int(input("z= "))
temp=0
if x>y:
temp=y
y=x
x=temp
if x>z:
temp=z
z=x
If y>z:
z=y
y=temp
print(x, y, z)
x=input("Please input x:")
if x<0 or x>=20:
print(x//10)
elif 0<=x<5:
print(x)
elif 5<=x<10:
print(3*x-5)
elif 10<=x<20:
print(0.5*x-2)
a=1
if a<0:
print("a<0")
elif a<1:
print("0<a<1")
else:
print("a>=1")