Python file read and write operations

Source: Internet
Author: User

The following steps are generally experienced when manipulating files:

  • Open File
  • Manipulating files

1. Open the file:

File handle = open ('/path/to/file_name ', ' pattern ')


  • R: Read-only mode, which defaults to read-only mode when opening a file, and the action pointer at the beginning of the file.
  • W: Write-only mode, the file does not exist, it is created, the original content is emptied, and the action pointer is at the beginning of the file.
  • X: Write-only mode, the file does not exist, it is created, there is a report; The action pointer is at the beginning of the file.
  • A: Append, write only, the file does not exist then create, exist in the original file append content, the action pointer to the end of the file.

+ indicates both read and write files:

  • r+: Read and Write
  • w+: Write Read
  • x+: Write Read
  • A +: Additional Reading

B means to operate in byte mode:

  • RB: Open in bytes, read and write
  • WB: Open in bytes, write read
  • XB: Opened in bytes, read-write
  • AB: Open in bytes, append read

  NOTICE: When opened in B, the data read is byte type, and the data written is also of type Byte.

Through the With management context:

With open ('/path/to/file_name ', ' pattern ') as file_name:


With support for managing multiple contexts at python2.7 and beyond

With open ('/path/to/file_name1 ', ' pattern ') as File_name1,open ('/path/to/file_name2 ', ' pattern ') as file_name2:


Python file read and write operations

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