near_me
Linear Algebra
keyboard_arrow_down 52 guides
1. Vectors
2. Matrices
3. Linear equations
4. Matrix determinant
5. Vector space
6. Special matrices
7. Eigenvalues and Eigenvectors
8. Orthogonality
9. Matrix decomposition
check_circle
Mark as learned thumb_up
0
thumb_down
0
chat_bubble_outline
0
auto_stories new
settings
Python File | readline method
schedule Mar 5, 2023
Last updated local_offer
Tags Python
tocTable of Contents
expand_more Check out the interactive map of data science
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!