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:

逻辑：

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.

要实现该程序太容易了，我们必须通过检查元素在新列表中是否可用，将元素逐个追加到另一个列表。

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.

假设，20在列表list1中有3次可用，并且当我们将20(第一次出现)附加到列表list2时 ，它将被附加，但是当我们将20(第二次出现)附加到列表list2时 ，条件将为false并且项目将不会被追加。 最后，我们将获得没有重复元素的列表。

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

输出量

    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(定义用户定义功能)：

# 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

输出量

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

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