Python file operation read, write, copy plus OS module
1. Read
open (path/filename,'rt')------>Return value: stream (stream, pipeline)
container = stream.read()------>Read the content in the pipeline
2. Write
mode ='w' means write operation, the original content will be cleared each time, and then the current content will be written.
mode ='a', append mode, do not clear the original content.
3. File copy
is a read and a write operation
The use of with in combination with open can help us release resources automatically
4. os module
4.1. Get the file directory where the current file is located
4.2. Save the previous 1.txt to the directory where the current file is located,
os.path.join() to splice the file name
4.3, os.path.split() to split the folder and file name
4.4. os.path.splitext() Split files and extensions
4.5. Purpose: Delete the try1 folder. Only when all files in the folder are deleted, the folder can be deleted.
4.6. Switch directories, which is equivalent to cd in the terminal :
