Python File read() Method
Python File MethodsOverview
read()The method is used to read a specified number of bytes from a file. If not given or negative, it reads all.
Syntax
The syntax of the read() method is as follows:
fileObject.read([size]);
Parameters
-
size-- The number of bytes to read from the file. The default is -1, which means reading the entire file.
Return Value
Returns the bytes read from the string.
Example
The following example demonstrates the use of the read() method:
The content of the file example.txt is as follows:
1:www.example.com 2:www.example.com 3:www.example.com 4:www.example.com 5:www.example.com
Loop to read the content of the file:
Example
#!/usr/bin/python
# -*- coding: UTF-8 -*-
# Open the file
fo = open("example.txt", "rw+")
print File name:, fo.name
line = fo.read(10)
print Read string: %s % (line)
# Close the file
fo.close()
# -*- coding: UTF-8 -*-
# Open the file
fo = open("example.txt", "rw+")
print File name:, fo.name
line = fo.read(10)
print Read string: %s % (line)
# Close the file
fo.close()
The output of the above example is:
文件名为: example.txt 读取的字符串: 1:www.runoOther Extensions