The-Twelve-Modes-of-Python-File-Handling.md

The-Twelve-Modes-of-Python-File-Handling.md

MODE	MEANING	STREAM POSITION	COMMENT
r	reading	beginning of the file	default
r+	reading and writing	beginning of the file
w	writing only		Overwrites / creates a new file for writing
w+	writing and reading		Overwrites / creates a new file for reading and writing
rb	reading in binary	beginning of the file
rb+	reading and writing binary
wb+	writing and reading binary		Overwrites / creates a new file for reading and writing
a	appending	end of the file if exists	If the file does not exist, it creates a new file for writing.
ab	appending in binary	end of the file if exists	If the file does not exist, it creates a new file for writing.
a+	appending and reading	end of the file if exists	If the file does not exist, it creates a new file for reading and writing
ab+	appending and reading in binary	end of the file exists	If the file does not exist, it creates a new file for reading and writing.
x	exclusive creation		failing if the file already exists (Python 3)