Count Lines in Text File Python Program

Topic: Count Lines in Text File Python Program

Count Lines in Text File Python Program

# Python program to count 
# number of lines in a file
# Input filename, open it in 
# read mode. display its cntents 
# count and display number of lines
# www.EasyCodeBook.com

file_name = input("Enter file name:")

file1 = open(file_name, "r")

line_count = 0
print("Contents of file " + file_name + " are:")

# display and count number of lines
for line in file1:
    print(line, end='')
    line_count+=1

print('\n\nTotal Number of lines in this file are = ' + str(line_count))

file1.close()

How this Program works?

• First of all we will show a message to the to enter the name of the file.
• The user will input a valid file name.
• We use input() function of Python for the above mentioned task.
• open() function will be used to open the given file in read mode, since we supply two arguments, the file name and an opening mode “r”.
• Set a line_count variable to zero.
• We will use a for loop to read and print contents of the file:
• We will read the given file line by line.
• We will count each line by adding a 1 to line_count for each iteration of the loop
• We will show the total number of lines in the text file.

Note: This is to be noted that a file with name “example.txt” must be present at d: drive. As an example we create a file with name example.txt on D: drive with the following contents, as shown in the above image:

this is example text file
this is line 2
this is last line