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Wednesday, September 16, 2020

Solution Exercise 65: algorithm python whiche determines the number of lines of given a file

Exercise 65

Write an algorithm in python in the form of a function which takes as argument the path of an existing file and returns the number of lines of this file.

Solution

def numberOfLines( file):
    
    # opening the file in read mod
    f = open(file , 'r')
    
    # getting the list of lines
    listLines = f.readlines()
    
    # The number of lines is n = len(listLines)
    return len(listLines)
# Testing the function
# we must of beginning create a file for example myFile.txt which contains:
"""
line number 1
line number 2
line number 3
line number 4
line number 5
"""
print("Number of lines of myFile.txt is : " , numberOfLines("myFile.txt"))
# The output is : Number of lines of myFile.txt is :  5


Younes Derfoufi
my-courses.net

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