Python 3 - File read() Method

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Description

The method read() reads at most size bytes from the file. If the read hits EOF before obtaining size bytes, then it reads only available bytes.

Syntax

Following is the syntax for read() method −

fileObject.read( size );

Parameters

size − This is the number of bytes to be read from the file.

Return Value

This method returns the bytes read in string.

Example

The following example shows the usage of read() method.

Assuming that 'foo.txt' file contains following text:

This is 1st line
This is 2nd line
This is 3rd line
This is 4th line
This is 5th line

#!/usr/bin/python3

# Open a file
fo = open("foo.txt", "r+")
print ("Name of the file: ", fo.name)

line = fo.read(10)
print ("Read Line: %s" % (line))

# Close opened file
fo.close()

Result

When we run the above program, it produces the following result −

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