Python-如何从包含特定单词的列表中删除元素

Question

I want to remove elements from a list containing a keyword.

For example-

list1= [ 'one', 'one-test', 'two', 'two-test', 'three', 'three-test']

I want to remove all elements in this list that contain "-test".

So the final output should be -->

list1= ["one", "two", "three"] #because if it contained '-test' we just deleted the element as a whole

Answer 1

Using list comprehension we can easily accomplish this goal. Also using in we can check if a key word is in any elements in the given list.

list1= [ 'one', 'one-test', 'two', 'two-test', 'three', 'three-test']
newList = [elements for elements in list1 if '-test' not in elements]

output

['one', 'two', 'three']

Answer 2

Use list comprehension and check if the element of the list contains -test during iteration.

remove = '-test'
list1= [ 'one', 'one-test', 'two', 'two-test', 'three', 'three-test']
[x for x in list1 if remove not in x]
#['one', 'two', 'three']

Answer 3

The easiest way to get this done is

list1= [ 'one', 'one-test', 'two', 'two-test', 'three', 'three-test']

for l in list1:
    if '-test' in l:
        list1.remove(l)
list1  

Can also be done through list comprehenstion

Answer 4

res = []
for item in list1:
     if len(item.split("-")) <=1:
          res.append(item)
# res = ['one','two','three']

You can use a new array and split the given array. Append the values that satisfy the condition.