Example:

例：

    Input:
list1:  [10, 20, 10, 20, 30, 40, 30, 50]
Output:
List after removing duplicate elements
list2:  [10, 20, 30, 40, 50]

Logic:

邏輯：

To implement the program is too easy, we have to append elements one by one to another list by checking whether element is available in the new list or not.

要實現該程序太容易了，我們必須通過檢查元素在新列表中是否可用，將元素逐個追加到另一個列表。

Let suppose, 20 is available three times in the list list1 and when we append 20 (first occurrence) to the list list2, it will be appended, but when we append 20 (second occurrence) to the list list2, condition will be false and item will not be appended. And finally, we will get list without duplicate elements.

假設，20在列表list1中有3次可用，并且當我們將20(第一次出現)附加到列表list2時 ，它將被附加，但是當我們將20(第二次出現)附加到列表list2時 ，條件將為false并且項目將不會被追加。 最后，我們將獲得沒有重復元素的列表。

Program:

程序：

# declare list 
list1 = [10, 20, 10, 20, 30, 40, 30, 50]
# creating another list with unique elements
# declare another list 
list2 = []
# appending elements 
for n in list1:
if n not in list2:
list2.append(n)
# printing the lists 
print "Original list"
print "list1: ", list1
print "List after removing duplicate elements"
print "list2: ", list2

Output

輸出量

    Original listlist1:  [10, 20, 10, 20, 30, 40, 30, 50]List after removing duplicate elementslist2:  [10, 20, 30, 40, 50]

Program (Defining User defines function):

程序(定義用戶定義功能)：

# Function to remove duplicates 
def removeDuplicates (list1):
# declare another list
list2 = []
# appending elements 
for n in list1:
if n not in list2:
list2.append (n)
return list2
# Main code
# declare a list
list1 = [10, 20, 10, 20, 30, 40, 30, 50]
# print the list 
print "Original list: ", list1
print "List after duplicate remove: ", removeDuplicates (list1)

Output

輸出量

    Original list:  [10, 20, 10, 20, 30, 40, 30, 50]List after duplicate remove:  [10, 20, 30, 40, 50]

翻譯自: https://www.includehelp.com/python/remove-duplicate-elements-from-the-list.aspx