import math
a,b,c = input().split(',')
a = float(a)
b = float(b)
c = float(c)
if a + b > c and a + c > b and b + c > a:print('周长%f'%(a + b + c))p = (a + b + c)/2area = math.sqrt( p * ( p - a ) * ( p - b )*( p - c )) print('面积%f'%(area))
else:print('不能构成三角形')

flag = 0
sum = 0
while  1:print('Enter an integer, the input ends if it is 0:  ')shu = input()if shu != '0' :sum = sum + float(shu)flag +=1else:break
ave = float(sum/flag)
print('平均值是%f' %ave)

salary = float(input('本月收入: '))
insurance = float(input('五险一金: '))
diff = salary - insurance - 3500
if diff <= 0:rate = 0deduction = 0
elif diff < 1500:rate = 0.03deduction = 0
elif diff < 4500:rate = 0.1deduction = 105
elif diff < 9000:rate = 0.2deduction = 555
elif diff < 35000:rate = 0.25deduction = 1005
elif diff < 55000:rate = 0.3deduction = 2755
elif diff < 80000:rate = 0.35deduction = 5505
else:rate = 0.45deduction = 13505
tax = abs(diff * rate - deduction)
print('个人所得税: ￥%.2f元' % tax)
print('实际到手收入: ￥%.2f元' % (diff + 3500 - tax))

验证码
import random
import numpy as np
import string
print('开始生成验证码')
s = string.ascii_lowercase
str1 = ""
for i in range (3):for i in range(0,4):a = random.choice(s)b = np.random.choice([1,2,3,4,5,6,7,8,9,0])c = random.choice([a,b])print(c,end="")str1 = str(str1)+str(c) print('')shuru = input('请输入验证码')if shuru == str1 :print('成功')breakelse:print('再试一次')

import itertools
username = 'admin'
print('输入一个6位以内纯数字密码')
password = int(input())
print('开始爆破')
for i in range (0,999999):print(i)if int(i) == password:print('爆破成功，密码%s' %i)breakelse:continue

import numpy as np
res = np.random.choice(['0','1','2'])
x=input('输入0、剪刀   1、石头   2、布')
if res=='0':if x=='0':print("tie")elif x=='1':print('loser')else:print('win')
elif res=='1':if x=='2':print("win")elif x=='0':print('tie')else:print('loser')
else:if x=='2':print("loser")elif x=='1':print('win')else:print('tie')