near_me
Linear Algebra
keyboard_arrow_down 54 guides
chevron_leftDocumentation
check_circle
Mark as learned thumb_up
0
thumb_down
0
chat_bubble_outline
0
Comment auto_stories Bi-column layout
settings
Python File | readline method
schedule Aug 11, 2023
Last updated local_offer
Tags Python
tocTable of Contents
expand_more Master the mathematics behind data science with 100+ top-tier guides
Start your free 7-days trial now!
Start your free 7-days trial now!
Python's file.readline(~) method returns one line from the file and leaves a newline character \n at the end of the string (omitted from the last line of the file).
Parameters
1. size | number | optional
The number of bytes from the line to return. Default is to read whole line.
Return value
One line from the file as a string.
Examples
To return the first line of the file as a string:
f = open("test.txt", "r")
# Return the first linef.readline()
'sample line 1\n'
Notice how the newline character \n is included at the end of the string.
If we call file.readline(~) consecutively, we will return consecutive lines from the files:
f = open("test.txt", "r")
# Print first line from the fileprint(f.readline())# Print second line from the file print(f.readline())
sample line 1sample line 2
Published by Isshin Inada
Edited by 0 others
Did you find this page useful?
thumb_up
thumb_down
Comment
Citation
Ask a question or leave a feedback...
Official Python Documentation
https://docs.python.org/3/tutorial/inputoutput.html#methods-of-file-objects
thumb_up
0
thumb_down
0
chat_bubble_outline
0
settings
Enjoy our search
Hit / to insta-search docs and recipes!
