集合计算器

运行效果

优点

1. 集合内可添加字母作为元素
2. 集合元素显示较为友好
3. easygui图形界面注重用户体验
4. 可多次计算，十分便捷

缺点

1. 字号太小，字体太丑
2. 源代码无注释且较乱
3. 过多的元素无法在图形界面显示

代码

#集合计算器
from easygui import *

def encode(A):
    A = A.strip('{}')
    A = A.replace(' ','')
    A = A.split(',')
    for i in A:
        if i == '':
            A.remove(i)
    if len(A) == 1 and A[0] == '∅':
        return set()
    return set(A)

def ChooseElement(B, i, Len):
    if i == 0:
        return('∅')
    code = '{0:>{1}}'.format(bin(i)[2:],Len)
    X = list()
    count = 0
    for each in code:
        if each == '1':
            X.append(B[count])
        count += 1
    X.sort()
    return '{' + str(X)[1:-1] + '}'

def PowerSet(A):
    Len = len(A)
    num = 2 ** Len
    C = set()
    B = list(A)
    B.sort()
    for i in range(num):
        C.add(ChooseElement(B, i, Len))
    return C

def output(C):
    if len(C) == 0:
        return '∅'
    else:
        C = list(C)
        C.sort()
        C = str(C)
        C = C.replace('"','')
        C = C.replace("'",'')
        return '{' + C[1:-1] + '}'

mode = 1
A = {1,2,3}
B = {1,4}
while True:
    if mode != 3:
        tte = '集合计算器'
        msg1 = '请输入要计算的两个集合：'
        msg1 += '(请使用半角的逗号作为分隔)'
        A, B = (multenterbox(msg = msg1, title = tte, fields = ['A', 'B'], values=[output(A), output(B)]))
        A = encode(A)
        B = encode(B)

    Choices1 = ['A∩B','A∪B','A–B','B–A','A⊕B','P(A)','改变A或B的值']
    msg2 = 'A = ' + output(A) + '\n'
    msg2 += 'B = ' + output(B) + '\n'
    msg2 += '请选择你要进行的操作：\n'
    choice = buttonbox(msg = msg2, title = tte, choices = Choices1)

    if choice == 'A∩B':
        C = A & B
    elif choice == 'A∪B':
        C = A | B
    elif choice == 'A–B':
        C = A - B
    elif choice == 'B–A':
        C = B - A
    elif choice == 'A⊕B':
        C = A ^ B
    elif choice == 'P(A)':
        C = PowerSet(A)
    if choice == '改变A或B的值':
        mode = 2
    else:
        mode = 1

    if mode != 2:
        if len(C) < 32:
            msg3 = choice + ' = ' + output(C)
        else:
            msg3 = '太长了，写不下！' + choice + '共有' + str(len(C)) + '项'
        Choices2 = ['继续运算', '改变A或B的值', '退出']
        Choice = buttonbox(msg = msg3, title = tte, choices = Choices2)
        if Choice == '退出':
            break
        elif Choice == '继续运算':
            mode = 3
        elif Choice == '改变A或B的值':
            mode = 1
        else:
            break