Files.py

import os

filePath = r'c:\spam'

#create path
fullPath = os.path.join(filePath, 'folder', 'eggs.png')
print(fullPath)

#get working directory
os.getcwd()

#change working directory
os.chdir('c:\\drivers')


#absolute/relative path
os.path.abspath('..\\drivers')
os.path.isabspath()
os.path.relpath(fullpath, 'c\\spam') #relative path from a starting point

os.path.dirname(fullpath)
os.path.basename(fullpath)

#exists
os.path.exists(fullpath)
os.path.isfile(fullpath)
os.path.isfolder(fullpath)

os.path.getsize(fullpath)

os.listir('c:\\driver')

os.makedirs('c:\\driver2')


########################################
#reading/writing files
########################################
filePath = r'c:\spam\myFile.txt'

helloFile = open(filePath) #read mode
content = helloFile.read() #to read the file twice I need to call again open
helloFile.close()

lines = helloFile.readlines()

helloFile = open(filePath, 'w') #write mode
helloFile.write('Bla') #it does not add the \n automatically


#shelve files; allow to store list, dictionary and not-text data to
#a binary file.
import shelve
shelFile = shelve.open('mydata')
shelFile['cats'] = ['bla', 'ciao', 'miao']
shelFile.close()

#can be read with:
shelFile = shelve.open('mydata')
print(shelFile['cats'])

#it works like a dictionary
shelFile.keys()
shelFile.values()

########################################
#copy/move
########################################
import shutil

//copy single file
shutil.copy(fileSrcPath, dirPath)
shutil.copy(fileSrcPath, fileTargetPath) //copy and rename

//copy a directory
shutil.copytree(SrcFolder, targetFolder)

shutil.move(fileSrcPath, dirPath)
shutil.move(fileSrcPath, fileTargetPath) //rename

########################################
#deletion
########################################
os.unlink(fileName)
os.rmdir(dirName) #remove directory if empty

import shutil
shutil.rmtree(dirName) #delete the folder and its content

import send2trash
send2trash.send2trash(fileName) #send to trash instead of permanently removing

########################################
#walk a folder tree and allow to do operations in each level of the tree
########################################
for folderName, subfolders, filenames in os.walk(folderName) :
    print('Folder is' + folderName)
    print('Subfolders of ' + folderName + ' are ' + str(subfolders))
    print('Filenames of ' + folderName + ' are ' + str(filenames))

    for subfolder in subfolders :
        #...do something

    for file in filenames :
        #...do something