CODEWITHSUNDEEP
pythonstringlist
Amistad
Amistad

Reputation: 7410

Common characters within strings in 2 lists in Python

I have 2 lists as follows:

a = ["Ron is great", "Mark is good", "Sheela is bad", "Amy is horrible"]
b = ["Ron", "Mark"]
c = [item for item in a if item in b]

I normally use the above list comprehension to find common elements between 2 lists.However it fails in the above scenario as the IN function does an exact match and hence c is an empty list.How do I circumvent this and try to get a list c which looks like this :

c=["Ron is great", "Mark is good"]

Upvotes: 1

Views: 91

Answers (3)

Adem Öztaş
Adem Öztaş

Reputation: 21446

You can try like this,

>>> a = ["Ron is great", "Mark is good", "Sheela is bad", "Amy is horrible"]
>>> b = ["Ron", "Mark"]
>>> [ item for item in a for word in b if word in item]
['Ron is great', 'Mark is good']
>>>

Upvotes: 1

RemcoGerlich
RemcoGerlich

Reputation: 31260

You'll need two loops, for instance

c = [item for item in a
     if any(name in item for name in b)]

should be sufficient.

Upvotes: 4

xecgr
xecgr

Reputation: 5193

Your problem solved with list expressions

>>> a = ["Ron is great", "Mark is good", "Sheela is bad", "Amy is horrible"]
>>> b = ["Ron", "Mark"]
>>> c= [
...     sentence
...     for word in b
...     for sentence in a
...     if word in sentence
... ]                

['Ron is great', 'Mark is good']

Upvotes: 2

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