This section describes how to use the readline () method in Python.

This section describes how to use the readline () method in Python.

This article briefly introduces the use of the readline () method in Python. It is the basic knowledge of getting started with Python. For more information, see

The readline () method reads an entire row from a file. The linefeed at the end is kept in the string. If the size parameter is not negative, a maximum number of bytes, including the ending line breaks and incomplete rows, may be returned.

Returns an empty string immediately when EOF is encountered.

Syntax

The syntax of the readline () method is as follows:

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1	FileObject. readline (size );

Parameters

Size -- the number of bytes that can be read from the file.

Return Value

This method returns the rows read from the file.

Example

The following example shows how to use the readline () method.

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#! /Usr/bin/python   # Open a file Fo = open ("foo.txt", "rw + ") Print "Name of the file:", fo. name   # Assuming file has following 5 lines # This is 1st line # This is 2nd line # This is 3rd line # This is 4th line # This is 5th line   Line = fo. readline () Print "Read Line: % s" % (line)   Line = fo. readline (5) Print "Read Line: % s" % (line)   # Close opend file Fo. close ()

When we run the above program, it will produce the following results:

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Name of the file: foo.txt Read Line: This is 1st line   Read Line: This