If the file test.txt has 7 lines of content, what will the following expression return? len(open("test.txt").readlines())

Question

Can any one gives the answer of this question

Answer 1

just a comment from me:

using .readlines() function reads all lines from the file and store them in a list. this may not be an issue when the file contains just a few lines. if we have to read a file with a size of some gigabytes, a lot of memory will be used.

in this case the number of lines should be read one after the other, and counting can be done by using a counter variable:

count = 0
for line in open("books_1.txt", 'r'):
count += 1
print(count)

Answer 2

for rl in file.readlines():
print(rl.replace('\n',''))

Answer 3

I think I have deleted the code. I sometimes do if I have forgotten why I made it.

Answer 4

It returns 7.

I made a sample with 4 lines so you can see what happens:
https://code.sololearn.com/cfOuBchfn209/?ref=app

Answer 5

7

Answer 6

Paul, your code does not open.