| 软件工程 |
计科1班 |
| 作业要求 |
作业要求 |
| 作业目标 |
结对项目 通过python编程来实现四则运算。 |
GitHub地址：
https://github.com/Kklvu6/sizeyunsuan
成员
| 学号 |
姓名 |
| 3121004665 |
赛尔达尔·艾思开尔 |
| 3121004771 |
艾孜买提·艾合提 |
psp表格
| PSP |
Personal Software Process Stages |
预估耗时（分钟） |
实际耗时（分钟） |
| Planning |
计划 |
40 |
40 |
| Estimate |
估计这个任务需要多少时间 |
500 |
700 |
| Development |
开发 |
400 |
500 |
| Analysis |
需求分析 (包括学习新技术) |
200 |
280 |
| Design Spec |
生成设计文档 |
30 |
20 |
| Design Review |
设计复审 |
30 |
20 |
| Coding Standard |
代码规范 (为目前的开发制定合适的规范) |
10 |
10 |
| Design |
具体设计 |
10 |
10 |
| Coding |
具体编码 |
200 |
300 |
| Code Review |
代码复审 |
20 |
10 |
| Test |
测试（自我测试，修改代码，提交修改） |
40 |
40 |
| Reporting |
报告 |
30 |
20 |
| Test Repor |
测试报告 |
20 |
10 |
| Size Measurement |
计算工作量 |
5 |
5 |
| Postmortem & Process Improvement Plan |
事后总结, 并提出过程改进计划 |
5 |
5 |
效能分析
fracHandle函数，分析处理字符串与分数的关系，提高运算效率
代码说明
def makeExe(self):
localtime = time.asctime(time.localtime(time.time()))
# 清理文件内容
with open("Exercise.txt", 'w') as exercise_file:
exercise_file.write("题目数量 ： " + str(self.account) + "\t时间 ：" + localtime + "\n")
exercise_file.close()
with open("Answer.txt", 'w') as Answer_file:
Answer_file.close()
que_order = 0
repeat = testRepeat()
makeQue = randomMake(repeat, self.range)
- 两个数题目生成
- 生产两个文件，分别为Exercise.txt，Answer.txt，题目生成在Exercise.txt中，将答案写入Answer.txt
import random
from fractions import Fraction
from fracHandle import fracHandle
from isRepeat import testRepeat
class randomMake:
def __init__(self, repeat, range):
self.repeat = repeat
self.range = range
# 生成两个数的题目
def question_2bits(self, order):
while True:
frac_Handle = fracHandle()
sign = self.random_sign()
numberList = []
signList = []
firstNum = self.random_frac()
secondNum = self.random_frac() # 生成两个分数
question = ''
rightAnswer = ''
numberList.append(str(firstNum) + ',' + str(secondNum)) # 将生成的数字和符号放在字典同一个位置
signList.append(sign)
if self.repeat.isRepeat(numberList, signList) == True: # 检测此组数字和运算符是否重复
rightAnswer = frac_Handle.fracAccount(firstNum, secondNum, sign)
if rightAnswer != False:
rightAnswer = fracHandle.fracToStr(self, rightAnswer)
question = str(order) + ". " + frac_Handle.fracToStr(
firstNum) + " " + sign + " " + frac_Handle.fracToStr(
secondNum) + " ="
else:
continue
else:
continue
# 将问题写入 Exercise.txt中，将答案写入Answer.txt中
with open("Exercise.txt", 'a') as exercise_file:
exercise_file.write(question + "\n")
exercise_file.close()
with open("Answer.txt", 'a') as Answer_file:
Answer_file.write(str(order) + ". " + rightAnswer + "\n")
Answer_file.close()
break
# 随机生成符号
def random_sign(self):
randomSign = random.randint(0, 3)
if randomSign == 0:
sign = '+'
elif randomSign == 1:
sign = '-'
elif randomSign == 2:
sign = '*'
else:
sign = '÷'
return sign
# 随机生成分数
def random_frac(self):
while (True):
numer = random.randint(0, self.range) # 分子
dno = random.randint(1, self.range) # 分母
Num = Fraction(numer, dno)
if Num:
break
return Num
# 生成三个数的题目
def question_3bits(self, order):
while True:
frac_Handle = fracHandle()
# 生成相应的数字和符号
sign1 = self.random_sign()
sign2 = self.random_sign()
numberList = []
signList = []
firstNum = self.random_frac()
secondNum = self.random_frac()
thirdNum = self.random_frac()
question = ''
rightAnswer = ''
numberList.append(str(firstNum) + ',' + str(secondNum) + ',' + str(thirdNum))
signList.append(sign1 + ',' + sign2)
if self.repeat.isRepeat(numberList, signList) == True: # 检测是否重复
brackets = random.randint(0, 2) # 随机生成括号的位置
# 不生成括号
if (brackets == 0):
question = str(order) + ". " + frac_Handle.fracToStr(
firstNum) + " " + sign1 + " " + frac_Handle.fracToStr(
secondNum) + " " + sign2 + " " + frac_Handle.fracToStr(thirdNum) + " ="
# 如果前面是加号和减号而后面不是
if (sign1 == '+' or sign1 == '-') and (sign2 == '*' or sign2 == '÷'):
firstSum = frac_Handle.fracAccount(secondNum, thirdNum, sign2)
if firstSum != False:
rightAnswer = frac_Handle.fracAccount(firstNum, firstSum, sign1)
if rightAnswer != False:
rightAnswer = frac_Handle.fracToStr(rightAnswer)
else:
continue
else:
continue
# 其他情况
else:
firstSum = frac_Handle.fracAccount(firstNum, secondNum, sign1)
if firstSum != False:
rightAnswer = frac_Handle.fracAccount(firstSum, thirdNum, sign2)
if rightAnswer != False:
rightAnswer = frac_Handle.fracToStr(rightAnswer)
else:
continue
else:
continue
# 左边加一个括号：
elif (brackets == 1): # 左边加括号
question = str(order) + ". (" + frac_Handle.fracToStr(
firstNum) + " " + sign1 + " " + frac_Handle.fracToStr(
secondNum) + ") " + sign2 + " " + frac_Handle.fracToStr(thirdNum) + " ="
firstSum = frac_Handle.fracAccount(firstNum, secondNum, sign1)
if firstSum != False:
rightAnswer = frac_Handle.fracAccount(firstSum, thirdNum, sign2)
if rightAnswer != False:
rightAnswer = frac_Handle.fracToStr(rightAnswer)
else:
continue
else:
continue
# 右边加括号
else:
question = str(order) + ". " + frac_Handle.fracToStr(
firstNum) + " " + sign1 + " (" + frac_Handle.fracToStr(
secondNum) + " " + sign2 + " " + frac_Handle.fracToStr(thirdNum) + ") ="
firstSum = frac_Handle.fracAccount(secondNum, thirdNum, sign2)
if firstSum != False:
rightAnswer = frac_Handle.fracAccount(firstNum, firstSum, sign1)
if rightAnswer != False:
rightAnswer = frac_Handle.fracToStr(rightAnswer)
else:
continue
else:
continue
with open("Exercise.txt", 'a') as exercise_file:
exercise_file.write(question + "\n")
exercise_file.close()
with open("Answer.txt", 'a') as Answer_file:
Answer_file.write(str(order) + ". " + rightAnswer + "\n")
Answer_file.close()
break
# 运算式子重复
else:
continue
测试运行
