How to find the number of lines in a document

Question

I am trying to make a function that reads a document, and counts how many times a certain letter x appears in each row and inserts it into an array. After that, it will return whichever number appeared the most in the array. Here is what I have so far:

def LetterNumberCount(Letter):
    document = open ('magazine.in', 'r')
    letterOccurs = []
    for (Number of Lines): #Here is my problem
        line = document.readLine()
        letterOccurs.extend(line.count(Letter))
    return max(letterOccurs)

I need help finding the number of lines in the magazine. Is there a function to find the number of lines in something?

https://stackoverflow.com/a/8010133/1531971 and keep track of the line count as you read them? — , May 12 '18 at 01:31
No you don't. you want it to be _correct_ and _functional_ first. Only then, if it is necessary, do you worry about efficiency. _Anyway_ the example I gave you is classic Python and is efficient as it needs to be. — , May 12 '18 at 01:39

score 0 · Answer 1 · answered May 11 '18 at 23:56

0

In your for loop if line=null: break . Generally after the last line the document will return null.

answered May 11 '18 at 23:56

Ali Yılmaz · Answer 2 · 2018-05-12T00:09:06.687

0

the code below should work for you. It returns the line which includes given letter more than any other line.

If you want to return the count of letter in that line, simply return max_count.

def LetterNumberCount(letter):
    document = open('magazine.in', 'r')
    max_count = 0
    max_count_line = None
    for line in document.readlines():
       if line.count(letter) > max_count:
          max_count = line.count(letter)
          max_count_line = line
    return max_count_line

edited May 12 '18 at 00:09

answered May 12 '18 at 00:01

Ali Yılmaz

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I want to know which number appears most often out of all of the lines – PotatoLatte May 12 '18 at 00:15

How to find the number of lines in a document

2 Answers2