python计算24点游戏

24点游戏是一种需要使用数学技巧和逻辑思维的益智游戏，需要将四个数字通过加、减、乘、除的计算方法组合成结果为24的算式。

Python编程语言可以很方便地完成这一任务。首先，我们可以使用一个列表来存储输入的四个数字，然后使用for循环和列表索引来生成所有可能的四个数字的组合。接着，我们可以使用嵌套的for循环和操作符来生成所有可能的计算式子。最后，使用eval函数来计算每个计算式子的值，并判断是否等于24即可。

需要注意的是，在进行除法运算时，需要判断分母是否为0以及分子是否能够整除分母，避免出现错误。

下面是一个简单的Python示例代码：

# 输入四个数字
num_list = [1, 2, 3, 4]

# 生成所有可能的数字组合
for i in range(4):
    for j in range(4):
        if i != j:
            for k in range(4):
                if k != i and k != j:
                    for m in range(4):
                        if m != i and m != j and m != k:
                            
                            # 生成所有可能的计算式子
                            s1 = str(num_list[i]) + "+" + str(num_list[j])
                            s2 = str(num_list[i]) + "-" + str(num_list[j])
                            s3 = str(num_list[i]) + "*" + str(num_list[j])
                            if num_list[j] != 0 and num_list[i] % num_list[j] == 0:
                                s4 = str(num_list[i]) + "/" + str(num_list[j])
                            else:
                                s4 = ""
                            s5 = str(s1) + "+" + str(num_list[k])
                            s6 = str(s1) + "-" + str(num_list[k])
                            s7 = str(s1) + "*" + str(num_list[k])
                            if s4 != "" and num_list[k] != 0 and num_list[i] % num_list[j] == 0:
                                s8 = str(s1) + "/" + str(num_list[k])
                            else:
                                s8 = ""
                            s9 = str(s2) + "+" + str(num_list[k])
                            s10 = str(s2) + "-" + str(num_list[k])
                            s11 = str(s2) + "*" + str(num_list[k])
                            if s4 != "" and num_list[k] != 0 and num_list[i] % num_list[j] == 0:
                                s12 = str(s2) + "/" + str(num_list[k])
                            else:
                                s12 = ""
                            s13 = str(s3) + "+" + str(num_list[k])
                            s14 = str(s3) + "-" + str(num_list[k])
                            s15 = str(s3) + "*" + str(num_list[k])
                            if s4 != "" and num_list[k] != 0 and num_list[i] % num_list[j] == 0:
                                s16 = str(s3) + "/" + str(num_list[k])
                            else:
                                s16 = ""
                            s17 = str(s5) + "+" + str(num_list[m])
                            s18 = str(s5) + "-" + str(num_list[m])
                            s19 = str(s5) + "*" + str(num_list[m])
                            if s8 != "" and num_list[m] != 0 and eval(s4) % num_list[m] == 0:
                                s20 = str(s5) + "/" + str(num_list[m])
                            else:
                                s20 = ""
                            s21 = str(s6) + "+" + str(num_list[m])
                            s22 = str(s6) + "-" + str(num_list[m])
                            s23 = str(s6) + "*" + str(num_list[m])
                            if s8 != "" and num_list[m] != 0 and eval(s4) % num_list[m] == 0:
                                s24 = str(s6) + "/" + str(num_list[m])
                            else:
                                s24 = ""
                            s25 = str(s7) + "+" + str(num_list[m])
                            s26 = str(s7) + "-" + str(num_list[m])
                            s27 = str(s7) + "*" + str(num_list[m])
                            if s8 != "" and num_list[m] != 0 and eval(s4) % num_list[m] == 0:
                                s28 = str(s7) + "/" + str(num_list[m])
                            else:
                                s28 = ""
                            s29 = str(s17) + "+" + str(num_list[i])
                            s30 = str(s17) + "-" + str(num_list[i])
                            s31 = str(s17) + "*" + str(num_list[i])
                            if s20 != "" and num_list[i] != 0 and eval(s8) % num_list[i] == 0:
                                s32 = str(s17) + "/" + str(num_list[i])
                            else:
                                s32 = ""
                            s33 = str(s18) + "+" + str(num_list[i])
                            s34 = str(s18) + "-" + str(num_list[i])
                            s35 = str(s18) + "*" + str(num_list[i])
                            if s20 != "" and num_list[i] != 0 and eval(s8) % num_list[i] == 0:
                                s36 = str(s18) + "/" + str(num_list[i])
                            else:
                                s36 = ""
                            s37 = str(s19) + "+" + str(num_list[i])
                            s38 = str(s19) + "-" + str(num_list[i])
                            s39 = str(s19) + "*" + str(num_list[i])
                            if s20 != "" and num_list[i] != 0 and eval(s8) % num_list[i] == 0:
                                s40 = str(s19) + "/" + str(num_list[i])
                            else:
                                s40 = ""
                            
                            # 计算每个计算式子的值
                            if eval(s1) == 24 or eval(s2) == 24 or eval(s3) == 24 or eval(s4) == 24 or eval(s5) == 24 or eval(s6) == 24 or eval(s7) == 24 or eval(s8) == 24 or eval(s9) == 24 or eval(s10) == 24 or eval(s11) == 24 or eval(s12) == 24 or eval(s13) == 24 or eval(s14) == 24 or eval(s15) == 24 or eval(s16) == 24 or eval(s17) == 24 or eval(s18) == 24 or eval(s19) == 24 or eval(s20) == 24 or eval(s21) == 24 or eval(s22) == 24 or eval(s23) == 24 or eval(s24) == 24 or eval(s25) == 24 or eval(s26) == 24 or eval(s27) == 24 or eval(s28) == 24 or eval(s29) == 24 or eval(s30) == 24 or eval(s31) == 24 or eval(s32) == 24 or eval(s33) == 24 or eval(s34) == 24 or eval(s35) == 24 or eval(s36) == 24 or eval(s37) == 24 or eval(s38) == 24 or eval(s39) == 24 or eval(s40) == 24:
                                print("Yes")