Detailed introduction to the Python open read/Write File implementation script

Script for reading and writing files in Python open

Remember to call the close () method of the object after opening the relevant file with open. For example, you can use the try/finally statement to ensure that the file can be closed. The following is a detailed introduction to the relevant content of the article. I hope you will gain some benefits.

 
 

  
  
file_object = open('thefile.txt')  
  
  
try:  
  
  
all_the_text = file_object.read( )  
  
  
finally:  
  
  
file_object.close( ) 
 
 

Note: The open statement cannot be placed in the try block, because when an exception occurs when the file is opened, the file object file_object cannot execute the close () method.

Read files

Read text files

 
 

  
  
input = open('data', 'r') 
 
 

The above code is used to implement the second parameter of the script in the Python open read/write file. The default value is r.

 
 

  
  
input = open('data') 
 
 

Read Binary files

 
 

  
  
input = open('data', 'rb') 
 
 

Read all content

 
 

  
  
file_object = open('thefile.txt')  
  
  
try:  
  
  
all_the_text = file_object.read( )  
  
  
finally:  
  
  
file_object.close( ) 
 
 

Read fixed bytes

 
 

  
  
file_object = open('abinfile', 'rb')  
  
  
try:  
  
  
while True:  
  
  
chunk = file_object.read(100)  
  
  
if not chunk:  
  
  
break  
  
  
do_something_with(chunk)  
  
  
finally:  
  
  
file_object.close( ) 
 
 

The above is an introduction to the content related to the Python open read/write file implementation script. I hope you will gain some benefits.