I would like to count a list of words in a.txt file using python

Question

I have this code that counts the number of occurrences of a string in a.txt file and returns it to me. But I would like to use a list of items or an array. And that he would return to me the occurrence of each of these items. The current code is this:

 word = "12510537019"

 def counting(Text_File, Word):

    Data = open(Text_File, "r").read()

    count = Data.count(Word)

    print(Word, ":", count)

counting("arquivo.txt", word)

But I’d like to start with something like this:

word = [
    "12510537019",
    "21185356784",
    "22097245854",
    "16427169000",
    "12464413424",
    "13506742816",
    "11990657689"]

How to do?

Answer 1

You can try using list comprehension:

wordList = [
    "12510537019",
    "21185356784",
    "22097245854",
    "16427169000",
    "12464413424",
    "13506742816",
    "11990657689"]

ocorrencias = [counting("arquivo.txt", word) for word in wordList]

This will generate a new list of occurrences of each word in the file:

print(ocorrencias)
#[3,6,2,1,9,8,7]

Keep in mind that this is the fastest way to do it, but it is not the most efficient. What it does is re-call the function counting for each word in the list, making the file open and closed multiple times. For an example of learning or something small I believe to have no problems.