Lines in files

Question

How can I know the number of line in txt file and read it line by line?

Answer 1

You can do that using the 'readlines()' method to read all the lines from the file.

example:
f = open('example.txt', 'r')
lines = f.readlines()
for line in lines:
print(line)

In order to get the number of lines in the file you can make a list and append the lines to it, then get the length lf the list.

example:
f = open('example.txt', 'r')
lines = f.readlines()
lines_list = []
for line in lines:
lines_list.append(line)
print(len(lines_list))

Answer 2

There is the method 'readlines' that puts all the lines in a file in a list.

Then you can treat them separately any way you want or just count them by using len on the list.

(This assumes that every line is ended with a newline.)

Answer 3

Abdesslam Dai readlines returns an itribal object which u can git the length of by saying len(f.readlines)