《Python语言程序设计 》第4章编程题答案（2）

wg19830119

4.13:

import sys

status= eval(input('(0-singlefiler,1-married jointly,\n'+

'2-married separately,3-head of household)\n'+

'enter the filing status:'))

income = eval(input('enter thetaxable income:'))

tax=0

if status == 0:

if income <= 8350:

       tax = income * 0.10

elif income <33950 :

       tax=8350*0.10+(income-8350)*0.15

elif income <82250 :

       tax=8350*0.10+(33950-8350)*0.15+(income-33950)*0.25

elif income <171550:

       tax=8350*0.10+(33950-8350)*0.15+(82250-33950)*0.25+\

           (income-82250)*0.28

elif income <372950 :

       tax=8350*0.10+(33950-8350)*0.15+(82250-33950)*0.25+\

           (171550-82250)*0.28+(income-171550)*0.33

else:

       tax=8350*0.10+(33950-8350)*0.15+(82250-33950)*0.25+\

           (171550-82250)*0.28+(372950-171550)*0.33+\

                (income-372950)*0.35

elif status==1:

if income <= 16700:

       tax = income * 0.10

elif income <67900 :

       tax=16700*0.10+(income-16700)*0.15

elif income <137050 :

       tax=16700*0.10+(67900-16700)*0.15+(income-67900)*0.25

elif income <208805:

       tax=16700*0.10+(67900-16700)*0.15+(137050-67900)*0.25+\

           (income-137050)*0.28

elif income <372950 :

       tax=16700*0.10+(67900-16700)*0.15+(137050-67900)*0.25+\

           (208805-137050)*0.28+(income-208805)*0.33

else:

16700*0.10+(67900-16700)*0.15+(137050-67900)*0.25+\

           (208805-137050)*0.28+(372950-208805)*0.33+\

                (income-372950)*0.35

elif status == 2:

if income <= 8350:

       tax = income * 0.10

elif income <33950 :

       tax=8350*0.10+(income-8350)*0.15

elif income <68525 :

       tax=8350*0.10+(33950-8350)*0.15+(income-33950)*0.25

elif income <104425:

       tax=8350*0.10+(33950-8350)*0.15+(68525-33950)*0.25+\

            (income-68525)*0.28

elif income <186475 :

       tax=8350*0.10+(33950-8350)*0.15+(68525-33950)*0.25+\

           (104425-68525)*0.28+(income-104425)*0.33

else:

8350*0.10+(33950-8350)*0.15+(68525-33950)*0.25+\

           (104425-68525)*0.28+(186475-104425)*0.33+\

                (income-186475)*0.35

elif status == 3:

if income <= 11950:

       tax = income * 0.10

elif income <45500 :

       tax=11950*0.10+(income-11950)*0.15

elif income <117450 :

       tax=11950*0.10+(45500-11950)*0.15+(income-45500)*0.25

elif income <190200:

       tax=11950*0.10+(45500-11950)*0.15+(117450-45500)*0.25+\

           (income-117450)*0.28

elif income <372950 :

       tax=11950*0.10+(45500-11950)*0.15+(117450-45500)*0.25+\

           (190200-117450)*0.28+(income-190200)*0.33

else:

11950*0.10+(45500-11950)*0.15+(117450-45500)*0.25+\

           (190200-117450)*0.28+(372950-190200)*0.33+\

                (income-372950)*0.35

else:

print('error')

   sys.exit

print('tax is ',format(tax,'.2f'))

4.14:

import random

coin=random.randint(0,1)

number=eval(input('正面为1，背面为0，你猜是？'))

print( coin==number if coin == number else coin==number)

4.15:

import random

guess=eval(input('你猜中奖号码是多少？'))

number=random.randint(0,999)

guess1=guess // 100

guess2=guess // 10 % 10

guess3=guess % 10

number1=number // 100

number2=number // 100 % 10

number3=number % 10

number_list=[number1,number2,number3]

if guess==number:

print('bingo!you win all 10000$')

elif (number1==guess1 or number1==guess2 or number1==guess3) and\

    ((number2==guess1 or number2==guess2or number2==guess3) and\

    (number3==guess1 or number3==guess2or number3==guess3)) :

print('match all number,you win 3000$')

elif ((guess1 in number_list) and (guess2 notin number_list) and (guess3 notin number_list)) or\

    ((guess2 in number_list) and (guess1 notin number_list) and (guess3 notin number_list)) or\

    ((guess3 in number_list) and (guess1 notin number_list) and (guess2 notin number_list)):

print('you just match one number,you win 1000$')

else:

print('sorry,you guess nnumber is wrong ,no money')

print(guess,number)

4.16:

import random

number=random.randint(ord('A'),ord('Z'))

print(chr(number))

4.17:

import random

computer=random.randint(0,2)

people=eval(input('scissor(0),rock(1),paper(2):'))

if people==computer:

print('the computer is '+str(computer)+'youare '+str(people)+'too.'+'it is a draw')

elif computer==0and people==1:

print('the computer is '+str(computer)+'youare '+str(people)+'you win !')

elif computer==0and people==2:

print('the computer is '+str(computer)+'youare '+str(people)+'the computer win !')

elif computer==1and people==0:

print('the computer is '+str(computer)+'youare '+str(people)+'the computer win !')

elif computer==1and people==2:

print('the computer is '+str(computer)+'youare '+str(people)+'you win !')

elif computer==2and people==0:

print('the computer is '+str(computer)+'youare '+str(people)+'you win !')

elif computer==2and people==1:

print('the computer is '+str(computer)+'youare '+str(people)+'the computer win !')

else:

print('input eorro')

4.18:

rate=eval(input('enter theexchange rate from dollars to RMB:'))

number=eval(input('enter 0 toconvert dollars to RMB and 1 vice versa:'))

if number == 0:

   dollars=eval(input('enter the dollars amount:'))

   rmb=dollars*rate

print(str(dollars)+'dollarsis',format(rmb,'.2f')+'yuan')

elif number==1:

   rmb=eval(input('enter the rmb amount:'))

   dollars=rmb/rate

print(str(rmb)+'rmb is',format(dollars,'.2f')+'dollars')

else:

print('incorrect input')

4.19:

side1,side2,side3=eval(input('输入三角形三条边长：'))

if side1+side2>side3 and side2+side3>side1 and side1+side3>side2:

   perimeter=side1+side2+side3

print('the perimeter is '+str(perimeter))

else:

print('the input is invalid')

sunl

支持你哈...................................

oldpan

在撸一遍。。。

lmy0123

楼猪V5啊