count number of words occurrence in text based on list of string

Question

I want to know what is the best approach to find the number of occurrence in text based on list of string. I found some use sum(any()) but it didn’t work because if text contains "re" it will count it

list1 = ['red', 'green', 'amazing', 'orange', 'amazing color', 'gray', 'pink']

text="green and red is an amazing color "

The expect count is 4

Thank you

Asked By: John

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Source

Answer 1

Probably there is a much smoother way, but the simple for-loop does the job.

list1 = ['red', 'green', 'amazing', 'orange', 'amazing color', 'gray', 'pink']

text="green and red is an amazing color "

amount_words_from_list_in_text = 0

for word in list1:
    if word in text:
        amount_words_from_list_in_text += 1

print(amount_words_from_list_in_text)

Answered By: Jacob

Answer 2

All you need to do is use the built-in sum() function along with str.count() and a generator expression:

sum(text.count(item) for item in list1)

Answered By: MattDMo

count number of words occurrence in text based on list of string

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