Copy/Arrange files from source directory on the basis of creation date ( Year , Month )

filesbydate.py

'''

My first python program. So no exepection of optimized code ;)


What did I learn:
1. We can't concatenate String with integer/boolean...       Use '{} {}'.format(var1, var2);
2. os Module have almost everything about Files and Directory.
3. os.walk returns files in subDirectory also. os.listDir returns file in currentDirectory only ( which we need ).  os.scanDir can be faster in many cases
    https://docs.python.org/3/library/os.html
    https://docs.python.org/3/library/os.html#os.listdir
    https://docs.python.org/3/library/os.html#os.scandir
    https://docs.python.org/3/library/os.html#os.DirEntry
4. os.path.getctime   // Not what I expected.

IDE:
VS Code
Extension:  Python


v0.1:
Hello world

v0.2
list files in directory

v0.3
Get file creation time ( winows only ).  Get Month and Year
Create directories in targetPath if not exist. Use mtime instead of ctime.  I should use exif.

v0.4
Copy the file to appropriate directory.

v0.5
Support command line. Old school way.  No argparse module


Optimization Needed:
1. Try to copy multiple files in same directory in one go.  Not sure how to do it though.
2. Find fast way to get Month and Year of file.

'''

import sys;
import os;
import time;
import datetime;
import shutil;


#print ("First program");

path = '.';
#path = 'D:/backup/Pics/PythonTest'
#targetPath = 'D:/backup/Pics/PythonTestTarget'

if ( len(sys.argv) != 3 ):
    print ('This needs exactly 2 inputs in commandline.  Source and Destination.')
    print ('py filesbydate.py "source-dir" "destination-dir".')
    exit()

path = sys.argv[1];
targetPath = sys.argv[2];

allFiles = [];
i = 0;

#for ( dirPath, dirNames, fileNames ) in os.walk(path):
for ( file ) in os.scandir(path):
    #print( '>> FileName {} : isFile: {}\n'.format(file, os.path.isfile( path + '/' + file)))
    #fullPath = path + '/' + file
    #fullPath = os.path.abspath(file);       // DirEntry can give fullPath
    #print( '>> FileName {} : isFile: {}  : directIsFile: {} \n'.format(fullPath, os.path.isfile( fullPath), file.is_file() ));
    #if ( os.path.isfile(fullPath)):
    if( file.is_file()):
        #allFiles.append(fullPath);
        #allFiles.append(file.path);
        #fileCTime = os.path.getctime(file);       #Windows only?  This is not correct.
        fileCTime = os.path.getmtime(file);       #Modified file time.  But good for images!. May be I should try exif.

        fileCTimeDTF = datetime.datetime.fromtimestamp(fileCTime)
        fileCreationYear = fileCTimeDTF.strftime("%Y");
        fileCreationMonth = fileCTimeDTF.strftime("%B");
        targetPathToCopy = os.path.join(targetPath, fileCreationYear, fileCreationMonth);
        os.makedirs(targetPathToCopy, exist_ok=True);    # Create subdirectory if not exists

        i = i + 1;
        #print ( '>> {} {} {} {} {} {} {}\n'.
        #    format(i, file.path, fileCTime, fileCTimeDTF, fileCreationYear, fileCreationMonth, targetPathToCopy ) ); 

        print('{} Copying {} to {}\n'.format( i, file.path, targetPathToCopy ) );
        #shutil.move(file.path, targetPathToCopy );  #Finally move the file to correct folder.
        shutil.copy(file.path, targetPathToCopy );  #Finally move the file to correct folder.
    
    

Use:
py filesbydate.py "source-dir" "destination-dir

I created this because my Android image folder had around 2000 image files. My Windows laptop was taking ages everytime I open this directory. Pretty sure there must be some apps which can do the same thing. But I never wrote any Python program so thought it will be good learning.

This is highly unoptimized code :D ~ Everyone