Python 程序查找列表差异

编写一个 Python 程序来查找两个列表之间的差异。在此示例中，我们将列表转换为集合，找到集合差异，然后将其转换回列表。

list1 = [1, 2, 4, 6, 8, 9]
list2 = [1, 3, 5, 7, 11, 9]

print("First  List Items = ", list1)
print("Second List Items = ", list2)

diff1 = list(set(list1) - set(list2))
diff2 = list(set(list2) - set(list1))

actualdiff = diff1 + diff2
print("List Difference Result = ", actualdiff)

Python 程序查找列表差异

此程序允许输入两个列表的列表项，然后使用集合返回列表差异。

list1 = []
listNumber = int(input("Enter the Total List Items = "))
for i in range(1, listNumber + 1):
    listValue = int(input("Enter the %d List Item = " %i))
    list1.append(listValue)

list2 = []
listNumber = int(input("Enter the Total List Items = "))
for i in range(1, listNumber + 1):
    listValue = int(input("Enter the %d List Item = " %i))
    list2.append(listValue)

print("First  List Items = ", list1)
print("Second List Items = ", list2)

actualdiff = list(list(set(list1) - set(list2)) + list(set(list2) - set(list1)))
print("List Difference Result = ", actualdiff)

输出

Enter the Total List Items = 3
Enter the 1 List Item = 1
Enter the 2 List Item = 2
Enter the 3 List Item = 3
Enter the Total List Items = 4
Enter the 1 List Item = 4
Enter the 2 List Item = 5
Enter the 3 List Item = 2
Enter the 4 List Item = 1
First  List Items =  [1, 2, 3]
Second List Items =  [4, 5, 2, 1]
List Difference Result =  [3, 4, 5]

在此程序中，我们使用 for 循环和 if 语句来检查两个列表之间的差异。for 循环 (for val in list1 + list2) 迭代 list1 和 list2 中的所有值。

if 语句和 not in 运算符 (if val not in list1 or val not in list2) 检查该项是否不存在于 list1 或 list2 中。如果为 True，则将该项追加或添加到列表差异中。

list1 = [1, 2, 6, 8, 11, 14]
list2 = [2, 3, 11, 9, 7, 14, 22]

print("First  List Items = ", list1)
print("Second List Items = ", list2)

listDifference = []

for val in list1 + list2:
    if val not in list1 or val not in list2:
        listDifference.append(val)

print("List Difference Result = ", listDifference)

First  List Items =  [1, 2, 6, 8, 11, 14]
Second List Items =  [2, 3, 11, 9, 7, 14, 22]
List Difference Result =  [1, 6, 8, 3, 9, 7, 22]

此程序使用 列表推导式 来检查两个给定 列表 之间的差异。

list1 = [3, 4, 6, 7, 8, 11, 22]
list2 = [1, 3, 5, 11, 8, 9, 16, 44]

print("First  List Items = ", list1)
print("Second List Items = ", list2)

listdiff = [x for x in list1 + list2 if x not in list1 or x not in list2]

print("List Difference Result = ", listdiff)

First  List Items =  [3, 4, 6, 7, 8, 11, 22]
Second List Items =  [1, 3, 5, 11, 8, 9, 16, 44]
List Difference Result =  [4, 6, 7, 22, 1, 5, 9, 16, 44]