x_y.py

# Python

x = int(input("请输入x:"))

y = int(input("请输入y:"))

print(x,'+',y,'=',x+y)

print(x,'*',y,'=',x*y)

print(x,'**',y,'=',x**y)

time.py

hour = int(input("请输入小时: "))

minute = int(input("请输入分钟:"))

second = int(input("请输入秒:"))

s = hour*60*60 + minute * 60 + second

print('从凌晨到现在经历了' ,s ,'秒')

if.py

# if.py

n = int(input("请输入一个整数: "))

if n % 2 == 1:
    # 当成立时
    print("这个数是奇数")
else:
    # 当不成立时
    print("这个数是偶数")

if_else.py

n = int(input('请输入一个数'))
# 判断这个数是否大于100
if n > 100:
    print(n, "大于100")
else:
    print(n,"不大于100")
# 2)判断这个数是否小于0
if n < 0:
    print(n, '小于0')
else:
    print(n, '不小于0')
# 3)判断这个数是否在80~100之间
if 80 < n < 100:
    print(n, '在80~100之间')
else:
    print(n, '不在80~100之间')

if2.py

# if2.py

# 输入一个数,用程序来判断这个数是正数,负数,还是零

n = int(input("请输入一个数: "))

if n > 0:
    print("这个数是正数")
elif n = 0:
    print("这个数是零")
elif n < 0:
    print("这个数是负数")

image.png

elif.py

n = int(input("请输入一个季度1~4的整数"))

if n == 1:
    print ('春季有1,2,3月')
elif n == 2:
    print ('夏季有4,5,6月')
elif n == 3:
    print ('秋季有7,8,9月')
elif n == 4:
    print ('冬季有10,11,12月')
else:
    print('你输入不是1~4的整数,你输错了')

image.png

month.py

n = int(input("请输入月份(1~12): "))
if 1 <= n <=3:
    print("春季")
elif 4 <= n <= 6:
    print("夏季")
elif 7 <= n <= 9:
    print("秋季")
elif 10 <= n <= 12:
    print("冬季")
else:
    print("你输入有错")

if 语句嵌套

# 此示例示意if语句的嵌套

n = int(input("请输入月份(1~12): "))
# if 1 <= n <=3:
#   print("春季")
# elif 4 <= n <= 6:
#   print("夏季")
# elif 7 <= n <= 9:
#   print("秋季")
# elif 10 <= n <= 12:
#   print("冬季")
# else:
#   print("你输入有错")
#   
#   
if 1 <= n <= 12:
    if n <= 3:
        print("春季")
    elif n <= 6:
        print("夏季")
    elif n <= 9:
        print("秋季")
    else:
        print("冬季")
else:
    print("你输入有误!")

image.png image.png image.png image.png