话不多说，上代码
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 label2 = Label(root,text="请选择下列想要的题型:",font=("微软雅黑",12),fg='green')
10 label2.place(x=220,y=180)
11 label3 = 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')
12 label3.place(x=0,y=25)
13 label4 = Label(root,text="请输入想要的难度:",font=("微软雅黑",12),fg='green')
14 label4.place(x=120,y=80)
15 label4 = Label(root,text="请输入想要的题数:",font=("微软雅黑",12),fg='green')
16 label4.place(x=320,y=80)
17
18 entry1 = Entry()
19 entry1.place(x=120,y=115)
20 entry2 = Entry()
21 entry2.place(x=320,y=115)
22 level=''
23 homeworkCount=''
24
25 def easy():
26 level=entry1.get()
27 homeworkCount=entry2.get()
28 print(level)
29 print(homeworkCount)
30 button=Button(root,text="确认",command=easy,width=15,height=1)
31 button.pack()
32 button.place(x=230,y=145)
33
34 def one():
35 count=0
36 level=entry1.get()
37 homeworkCount=entry2.get()
38 if level=="初级":
39 level=50
40 elif level=="中级":
41 level=100
42 else:
43 level=200
44 while count<int(homeworkCount):
45 count=count+1
46 print("第"+str(count)+"道题目");
47 intAddSub(level)
48 print("\n")
49 print('end!!!')
50
51 def two():
52 count=0
53 level=entry1.get()
54 homeworkCount=entry2.get()
55 if level=="初级":
56 level=50
57 elif level=="中级":
58 level=100
59 else:
60 level=200
61 while count<int(homeworkCount):
62 count=count+1
63 print("第"+str(count)+"道题目")
64 decAddSub(level)
65 print("\n")
66 print('end!!!')
67
68 def three():
69 count=0
70 level=entry1.get()
71 homeworkCount=entry2.get()
72 if level=="初级":
73 level=50
74 elif level=="中级":
75 level=100
76 else:
77 level=200
78 while count<int(homeworkCount):
79 count=count+1
80 print("第"+str(count)+"道题目")
81 print("\n")
82 print('end!!!')
83
84 def four():
85 count=0
86 level=entry1.get()
87 homeworkCount=entry2.get()
88 if level=="初级":
89 level=50
90 elif level=="中级":
91 level=100
92 else:
93 level=200
94 while count<int(homeworkCount):
95 count=count+1
96 print("第"+str(count)+"道题目")
97 intMulDiv(level)
98 print("\n")
99 print('end!!!')
100
101 def five():
102 count=0
103 level=entry1.get()
104 homeworkCount=entry2.get()
105 if level=="初级":
106 level=50
107 elif level=="中级":
108 level=100
109 else:
110 level=200
111 while count<int(homeworkCount):
112 count=count+1
113 print("第"+str(count)+"道题目")
114 fraMulDiv(level)
115 print("\n")
116 print('end!!!')
117
118 def closewindows():
119 root.destroy()
120
121 def intAddSub(level):
122 typeCal=random.randint(0,1); #选择加减运算符
123 num1=random.randint(0,level) #生成随机整数
124 num2=random.randint(0,level)
125 if typeCal==0:
126 print(str(num1)+"+"+str(num2)+"=?")
127 ans1=input("您的答案是:")
128 print("正确答案是:"+str(num1+num2))
129 else:
130 if num1<num2:
131 t=num1
132 num1=num2
133 num2=t
134 print(str(num1)+"-"+str(num2)+"=?")
135 ans2=input("您的答案是:")
136 print("正确答案是:"+str(num1-num2))
137
138 def decAddSub(level):
139 typeCal=random.randint(0,1) #选择加减运算符
140 num1=random.uniform(0,level) #生成随机整数
141 num1=round(num1,2)
142 num2=random.uniform(0,level)
143 num2=round(num2,2)
144 if typeCal==0:
145 print(str(num1)+"+"+str(num2)+"=?")
146 ans1=input("您的答案是:")
147 print("正确答案是:{:.2f}".format(num1+num2))
148 else:
149 if num1<num2:
150 t=num1
151 num1=num2
152 num2=t
153 print(str(num1)+"-"+str(num2)+"=?")
154 ans2=input("您的答案是:")
155 print("正确答案是:{:.2f}".format(num1-num2))
156
157 def fraAddSub(level):
158 typeCal=random.randint(0,1) #选择加减运算符
159 molecule1=random.randint(0,level) #生成随机整数
160 denominator1=random.randint(1,level)
161 num1=Fraction(molecule1,denominator1)
162 molecule2=random.randint(0,level)
163 denominator2=random.randint(1,level)
164 num2=Fraction(molecule2,denominator2)
165 if typeCal==0:
166 print(str(num1)+"+"+str(num2)+"=?")
167 ans1=input("您的答案是:")
168 print("正确答案是:"+str(num1+num2))
169 else:
170 if num1<num2:
171 t=num1
172 num1=num2
173 num2=t
174 print(str(num1)+"-"+str(num2)+"=?")
175 ans2=input("您的答案是:")
176 print("正确答案是:"+str(num1-num2))
177
178 def intMulDiv(level):
179 typeCal=random.randint(0,1) #选择加减运算符
180 num1=random.randint(0,level) #生成随机整数
181 num2=random.randint(0,level)
182 if typeCal==0:
183 print(str(num1)+"×"+str(num2)+"=?")
184 ans1=input("您的答案是:")
185 print("正确答案是:"+str(num1*num2))
186 else:
187 print(str(num1)+"÷"+str(num2)+"=?")
188 ans2=input("您的答案是:")
189 print("正确答案是:{:.2f}".format(num1/num2))
190
191 def fraMulDiv(level):
192 typeCal=random.randint(0,1) #选择加减运算符
193 molecule1=random.randint(0,level) #生成随机整数
194 denominator1=random.randint(1,level)
195 num1=Fraction(molecule1,denominator1)
196 molecule2=random.randint(0,level);
197 denominator2=random.randint(1,level)
198 num2=Fraction(molecule2,denominator2)
199 if typeCal==0:
200 print(str(num1)+"×"+str(num2)+"=?")
201 ans1=input("您的答案是:");
202 print("正确答案是:"+str(num1*num2))
203 else:
204 print(str(num1)+"÷"+str(num2)+"=?")
205 ans2=input("您的答案是:");
206 print("正确答案是:"+str(num1/num2))
207
208 btn1 = Button(root,text="整数加减",width=30,height=2,bg="pink",fg="blue",command=one)
209 btn1.pack()
210 btn1.place(x=50,y=220)
211
212 btn2 = Button(root,text="小数加减",width=30,height=2,bg="pink",fg="blue",command=two)
213 btn2.pack()
214 btn2.place(x=50,y=300)
215
216 btn3 = Button(root,text="分数加减",width=30,height=2,bg="pink",fg="blue",command=three)
217 btn3.pack()
218 btn3.place(x=50,y=380)
219
220 btn4 = Button(root,text="整数乘除",width=30,height=2,bg="pink",fg="blue",command=four)
221 btn4.pack()
222 btn4.place(x=320,y=220)
223
224 btn5 = Button(root,text="分数乘除",width=30,height=2,bg="pink",fg="blue",command=five)
225 btn5.pack()
226 btn5.place(x=320,y=300)
227
228 btn6 = Button(root,text="退出",width=30,height=2,bg="pink",fg="blue",command=closewindows)
229 btn6.pack()
230 btn6.place(x=320,y=380)
231
232 root.mainloop()
长这个样子
混合运算未完待续...