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Python File | readline method

Programming
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Python
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Operations
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File Operations
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Documentation
schedule Jul 1, 2022
Last updated
local_offer Python
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tocTable of Contents
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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 line
f.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 file
print(f.readline())
# Print second line from the file
print(f.readline())
sample line 1
sample line 2
robocat
Published by Isshin Inada
Edited by 0 others
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