File operations in Python

at first

Functions used when manipulating files in Python

Get file list

`python`


import os
os.listdir('../') #Pass PATH as a string as an argument

Confirmation of existence of files and folders

`python`


os.path.exists('../test.csv') #Confirmation of existence of files and folders
os.path.isfile('../test.csv') #Check if the target is a file
os.path.isdir('../test') #Check if the target is a folder

Rename files and folders

`python`


os.rename('../test.csv', '../test2.csv') #Arguments are in the order of the original file PATH and the changed file PATH.

Create a folder

`python`


os.makedirs('../test') #Create a folder in the specified PATH(Error if the folder already exists)

copy

Copy file

`python`


import shutil
shutil.copy2('../test.csv', '../test/test.csv') #Arguments are in the order of copy source and copy destination

Copy folder

`python`


shutil.copytree('../test/', '../test2/') #Arguments are in the order of copy source folder and copy destination folder

Move

Move files

`python`


shutil.move('../test.csv', '../test/test.csv') #Arguments are in the order of copy source folder and copy destination

Move folder

`python`


shutil.copytree('../test/', '../test2/') #Arguments are in the order of copy source folder and copy destination folder
shutil.rmtree('../test/')

Delete

Delete file

`python`


os.remove('../test/test.csv')

Delete folder

`python`


shutil.rmtree('../test/')

Read

`python`



f = open('test.txt','r')

for row in f:
	print row.strip()

f.close()

#Or

with open('test.txt','r') as f:
    for row in f:
        print row.strip()  #close when using with()Is not needed

writing

`python`


f = open('test.txt','w')

f.write('hoge\n')

f.close()