PSP2.1表格
| PSP2.1 | Personal Software Process Stages | 预估耗时(分钟) | 实际耗时(分钟) |
| Planning | 计划 | 20 | 10 |
| Estimate | 估计这个任务需要多少时间 | 10 | 10 |
| Development | 开发 | 260 | 300 |
| Analysis | 需求分析 (包括学习新技术) | 20 | 20 |
| Design Spec | 生成设计文档 | 10 | 15 |
| Design Review | 设计复审 (和同事审核设计文档) | 15 | 15 |
| Coding Standard | 代码规范 (为目前的开发制定合适的规范) | 15 | 20 |
| Design | 具体设计 | 15 | 10 |
| Coding | 具体编码 | 100 | 150 |
| Code Review | 代码复审 | 50 | 40 |
| Test | 测试（自我测试，修改代码，提交修改） | 30 | 30 |
| Reporting | 报告 | 30 | 25 |
| Test Report | 测试报告 | 25 | 25 |
| Size Measurement | 计算工作量 | 10 | 10 |
| Postmortem & Process Improvement Plan | 事后总结, 并提出过程改进计划 | 15 | 15 |
| 合计 | 370 |
395 |
代码：
1 from tkinter import *
2 import random
3 from fractions import Fraction
4
5 root = Tk()
6 root.title("四则运算")
7 root.geometry("605x500+300+100")
8
9 label = Label(root,text="现有如下5种题型：1）整数加减 2）小数加减3）分数加减 4）整数乘除 5）分数乘除",font=("微软雅黑",12),fg='red')
10 label.place(x=0,y=10)
11 label2 = Label(root,text="请选择下列想要的题型:",font=("微软雅黑",12),fg='red')
12 label2.place(x=220,y=180)
13 label2 = Label(root,text="难度等级:初级(0-50)、中级(0-100)、高级(0-200)",font=("微软雅黑",12),fg='red')
14 label2.place(x=0,y=40)
15 label4 = Label(root,text="请输入想要的难度:",font=("微软雅黑",12),fg='red')
16 label4.place(x=120,y=80)
17 label4 = Label(root,text="请输入想要的题数:",font=("微软雅黑",12),fg='red')
18 label4.place(x=320,y=80)
19
20 entry1 = Entry()
21 entry1.place(x=120,y=115)
22 entry2 = Entry()
23 entry2.place(x=320,y=115)
24 level=''
25 homeworkCount=''
26
27 def easy():
28 level=entry1.get()
29 homeworkCount=entry2.get()
30 print(level)
31 print(homeworkCount)
32 button=Button(root,text="确认",command=easy,width=15,height=1)
33 button.pack()
34 button.place(x=230,y=145)
35
36 def one():
37 count=0
38 level=entry1.get()
39 homeworkCount=entry2.get()
40 if level=="初级":
41 level=50
42 elif level=="中级":
43 level=100
44 else:
45 level=200
46 while count<int(homeworkCount):
47 count=count+1
48 print("第"+str(count)+"道题目");
49 intAddSub(level)
50 print("
")
51 print('end!!!')
52
53 def two():
54 count=0
55 level=entry1.get()
56 homeworkCount=entry2.get()
57 if level=="初级":
58 level=50
59 elif level=="中级":
60 level=100
61 else:
62 level=200
63 while count<int(homeworkCount):
64 count=count+1
65 print("第"+str(count)+"道题目")
66 decAddSub(level)
67 print("
")
68 print('end!!!')
69
70 def three():
71 count=0
72 level=entry1.get()
73 homeworkCount=entry2.get()
74 if level=="初级":
75 level=50
76 elif level=="中级":
77 level=100
78 else:
79 level=200
80 while count<int(homeworkCount):
81 count=count+1
82 print("第"+str(count)+"道题目")
83 fraAddSub(level)
84 print("
")
85 print('end!!!')
86
87 def four():
88 count=0
89 level=entry1.get()
90 homeworkCount=entry2.get()
91 if level=="初级":
92 level=50
93 elif level=="中级":
94 level=100
95 else:
96 level=200
97 while count<int(homeworkCount):
98 count=count+1
99 print("第"+str(count)+"道题目")
100 intMulDiv(level)
101 print("
")
102 print('end!!!')
103
104 def five():
105 count=0
106 level=entry1.get()
107 homeworkCount=entry2.get()
108 if level=="初级":
109 level=50
110 elif level=="中级":
111 level=100
112 else:
113 level=200
114 while count<int(homeworkCount):
115 count=count+1
116 print("第"+str(count)+"道题目")
117 fraMulDiv(level)
118 print("
")
119 print('end!!!')
120
121 def closewindows():
122 root.destroy()
123
124 def intAddSub(level):
125 typeCal=random.randint(0,1); #选择加减运算符
126 num1=random.randint(0,level) #生成随机整数
127 num2=random.randint(0,level)
128 if typeCal==0:
129 print(str(num1)+"+"+str(num2)+"=?")
130 ans1=input("您的答案是:")
131 print("正确答案是:"+str(num1+num2))
132 else:
133 if num1<num2:
134 t=num1
135 num1=num2
136 num2=t
137 print(str(num1)+"-"+str(num2)+"=?")
138 ans2=input("您的答案是:")
139 print("正确答案是:"+str(num1-num2))
140
141 def decAddSub(level):
142 typeCal=random.randint(0,1) #选择加减运算符
143 num1=random.uniform(0,level) #生成随机整数
144 num1=round(num1,2)
145 num2=random.uniform(0,level)
146 num2=round(num2,2)
147 if typeCal==0:
148 print(str(num1)+"+"+str(num2)+"=?")
149 ans1=input("您的答案是:")
150 print("正确答案是:{:.2f}".format(num1+num2))
151 else:
152 if num1<num2:
153 t=num1
154 num1=num2
155 num2=t
156 print(str(num1)+"-"+str(num2)+"=?")
157 ans2=input("您的答案是:")
158 print("正确答案是:{:.2f}".format(num1-num2))
159
160 def fraAddSub(level):
161 typeCal=random.randint(0,1) #选择加减运算符
162 molecule1=random.randint(0,level) #生成随机整数
163 denominator1=random.randint(1,level)
164 num1=Fraction(molecule1,denominator1)
165 molecule2=random.randint(0,level)
166 denominator2=random.randint(1,level)
167 num2=Fraction(molecule2,denominator2)
168 if typeCal==0:
169 print(str(num1)+"+"+str(num2)+"=?")
170 ans1=input("您的答案是:")
171 print("正确答案是:"+str(num1+num2))
172 else:
173 if num1<num2:
174 t=num1
175 num1=num2
176 num2=t
177 print(str(num1)+"-"+str(num2)+"=?")
178 ans2=input("您的答案是:")
179 print("正确答案是:"+str(num1-num2))
180
181 def intMulDiv(level):
182 typeCal=random.randint(0,1) #选择加减运算符
183 num1=random.randint(0,level) #生成随机整数
184 num2=random.randint(0,level)
185 if typeCal==0:
186 print(str(num1)+"×"+str(num2)+"=?")
187 ans1=input("您的答案是:")
188 print("正确答案是:"+str(num1*num2))
189 else:
190 print(str(num1)+"÷"+str(num2)+"=?")
191 ans2=input("您的答案是:")
192 print("正确答案是:{:.2f}".format(num1/num2))
193
194 def fraMulDiv(level):
195 typeCal=random.randint(0,1) #选择加减运算符
196 molecule1=random.randint(0,level) #生成随机整数
197 denominator1=random.randint(1,level)
198 num1=Fraction(molecule1,denominator1)
199 molecule2=random.randint(0,level);
200 denominator2=random.randint(1,level)
201 num2=Fraction(molecule2,denominator2)
202 if typeCal==0:
203 print(str(num1)+"×"+str(num2)+"=?")
204 ans1=input("您的答案是:");
205 print("正确答案是:"+str(num1*num2))
206 else:
207 print(str(num1)+"÷"+str(num2)+"=?")
208 ans2=input("您的答案是:");
209 print("正确答案是:"+str(num1/num2))
210
211 btn1 = Button(root,text="整数加减",width=30,height=2,bg="pink",fg="blue",command=one)
212 btn1.pack()
213 btn1.place(x=50,y=220)
214
215 btn2 = Button(root,text="小数加减",width=30,height=2,bg="pink",fg="blue",command=two)
216 btn2.pack()
217 btn2.place(x=50,y=300)
218
219 btn3 = Button(root,text="分数加减",width=30,height=2,bg="pink",fg="blue",command=three)
220 btn3.pack()
221 btn3.place(x=50,y=380)
222
223 btn4 = Button(root,text="整数乘除",width=30,height=2,bg="pink",fg="blue",command=four)
224 btn4.pack()
225 btn4.place(x=320,y=220)
226
227 btn5 = Button(root,text="分数乘除",width=30,height=2,bg="pink",fg="blue",command=five)
228 btn5.pack()
229 btn5.place(x=320,y=300)
230
231 btn6 = Button(root,text="退出",width=30,height=2,bg="pink",fg="blue",command=closewindows)
232 btn6.pack()
233 btn6.place(x=320,y=380)
234
235 root.mainloop()
结果：
