num1 = int(input("Num1:"))
num2 = int(input("Num2:"))
num3 = int(input("Num3:"))
Max_Num=0
if num1>num2:
Max_Num=num1
elif Max_Num>num3:
print("max num is",Max_Num)
if num1 < num2:
Max_Num=num2
if Max_Num>num3:
print("max num is",Max_Num)
else:
print("max num is",num3)
原文：https://www.cnblogs.com/yidashi110/p/9248470.html