学习Python的第二天

1、今天学习了循环语句

2、以下是一些小程序

import math
a,b,c=map(float,input('Enter a,b,c:').split(','))
root_=(b*b)-(4*a*c)
if root_>0:
    root_1=(-b+math.sqrt(b*b-4*a*c))/2*a
    root_2=(-b-math.sqrt(b*b-4*a*c))/2*a
    print('The roots are %f and %f'%(root_1,root_2))
elif root_==0:
    root_1=(-b+math.sqrt(b*b-4*a*c))/2*a
    print('The root is %f'%root_1)
else:
    print('The equation has no real roots')

 import random
num1=random.randint(0,100)
num2=random.randint(0,100)
print(num1,num2)

sum=num1+num2

sum_=int(input('请输入两个数的和：'))
if sum_==sum:
    print('正确')
else:
    print('错误')

today=int(input('Enter today:'))
day_num=int(input('Enter the number of days elapsed since today:'))
week=['Sunday','Monday','Tuesday','Wednesday','Thursday','Friday','Saturday']
futureweek=today+day_num
now=0
now=futureweek%7
print("Today is %s and the future day is %s"%(week[today],week[now]))

num1,num2,num3=map(int,input('请输入三个整数：').split(','))
x=[num1,num2,num3]
x.sort()
print(x)

weight_1,price_1=map(float,input('Enter weight and price for package1:').split(','))

weight_2,price_2=map(float,input('Enter weight and price for package2:').split(','))
vaule_1=weight_1/price_1
vaule_2=weight_2/price_2

if vaule_1>vaule_2:
    print('Package1 has the better price')
elif vaule_1==vaule_2:
    print('same')
else:
    print('Package2 has the better price')

year,month=map(int,input('输入年份和月份：').split(','))

if (year % 4==0 and year %100 !=0 )or (year%400==0):
    day_=int('29')
else:
    day_=int('28')
    
if month==1 or month==3 or month==5 or month==7 or month==8 or month==10 or month==12:
    day=int('31')
elif month==4 or month==6 or month==9 or month==11:
    day=int('30')
else :
    day=day_

print('%d 年%d月份有%d天'%(year,month,day))

import numpy as np
computer=np.random.choice(['正面','反面'])

hum=input('请输入你的选择：')
print(computer)
if computer == hum:
    print('正确')
else:
    print('错误')

import random

s=int(input('剪刀(0), 石头(1), 布(2): '))
i=random.randint(0,2)

print(i)
if (s == 0 and i == 2) or (s == 1 and i == 0) or (s == 2 and i == 1):
    print('You won.')
elif s==i:
    print('ping')
else:
    print('Loser')

y=int(input('Enter year:(e.g.,2008):'))
m=int(input('Enter month:1-12:'))
d=int(input('Enter the day of the month:1-31:'))
a=['Saturday','Sunday','Monday','Tuesday','Wednesday','Thurday','Firday']
if m==1:
    m=13
    y=y-1
if m==2:
    m=14
    y=y-1
h=int(d + ((26 * (m + 1) ) // 10) + (y % 100) + ((y % 100) / 4) + ((y // 100) / 4) + 5 * y // 100) % 7
o=a[h]
print('Day of the week is %s'%o)

import numpy as np
daxiao=np.random.choice(['Ace','2','3','4','5','6','7','8','9','10','Jack','Queen','King'])
huase=np.random.choice(['梅花','红桃','方块','黑桃'])
print('你选择的牌是',huase,daxiao)

num=int(input('输入一个三位整数：'))
bai=num//100
shi=num//10%10
ge=num%10
if bai==ge:
    print('是回文数！')
else:
    print('不是回文数')

a,b,c=map(float,input('Enter three edges:').split(','))
if (a+b)>c and (a+c)>b and (b+c)>a:
    print('The perimeter is %.0f'%(a+b+c))
else:
    print('不合法')