如何在列表中找到与另一个列表中的字符串或子字符串匹配的字符串

Question

How can I find a string in List1 that is a substring of any of the strings in List2? Both lists can be of different lengths.

Say I have:

List1=['hello', 'hi', 'ok', 'apple']

List2=['okay', 'never', 'goodbye']

I need it to return 'ok', seeing as it was the only string in list1 that matched list2.

Answer 1

您可以将列表理解用作：

[x for x in List1 for y in List2 if x in y]

Answer 2

If you want to know if a string from list1 is in list2 you can do

for s in List1:
    if s in List2:
        print("found s in List2")

Answer 3

I wrote this piece of code to implement the

List1=['hello', 'hi', 'ok', 'apple']
List2=['ok', 'never', 'goodbye']
i=[]
for j in List1:
    for k in List2:
        if j==k:
            i.append(j)

print i