Rsync like functionality via python and cp - much faster for certain purposes

pysync.py

# script to smartly backup files using cp rather than rsync

import sys
import os
import exceptions
from pprint import pprint as pp

def removeFile(fp):
    os.remove(fp)

def removeDir(dp):
    if dp != '/':
        os.system('rm -rf \'%s\'' % dp)
    else:
        print('Bad path : %s' % dp)


def copy(sf, df):
    print ('Copying \'%s\' -> \'%s\'' % (sf, df))
    os.system("cp -p '%s' '%s'" % (sf, df))

def mkdir(dr):
    print ('Creating dir %s' % dr)
    os.mkdir(dr)

def shouldCopyFile(sf, df):
    # if dest does not exist
    if not os.path.exists(df):
        print('Should copy : %s does not exist' % df)
        return True
    # if dest size is different
    if os.path.getsize(sf) != os.path.getsize(df):
        print('Should copy : %s size different' % df)
        return True
    # if dest modification time is different
    if abs(int(os.path.getmtime(sf)) - int(os.path.getmtime(df))) > 1:
        print('Should copy : %s mod time different' % df)
        print('ST : %s, DT : %s' % (os.path.getmtime(sf), os.path.getmtime(df)))
        return True
    print('DONT copy : %s' % sf)
    return False


def smartCopy(src, dest):
    if not os.path.exists(src):
        raise Exception(exceptions.LookupError, src)

    if not os.path.exists(dest):
        raise Exception(exceptions.LookupError, dest)

    for fd in os.listdir(src):
        sf, df = os.path.join(src, fd), os.path.join(dest, fd)

        if os.path.isdir(sf):
            if not os.path.exists(df):
                mkdir(df)
            elif not os.path.isdir(df):
                removeFile(df)
                mkdir(df)
            smartCopy(sf, df)
        else:
            if os.path.isdir(df):
                removeDir(df)
            if shouldCopyFile(sf, df):
                copy(sf, df)


def checkSrcDest(src, dest):
    if not os.path.exists(src):
        print('Src path does not exist.\n%s' % src)
        return False
    if not os.path.isdir(src):
        print('Src must be a directory.')
        return False
    if not os.path.exists(os.path.split(dest)[0]):
        print('Parent folder for Dest %s does not exist. Stop' % dest)
        return False
    else:
        if not os.path.exists(dest):
            mkdir(dest)
    return True


def main():
    src, dest = sys.argv[1:]
    src, dest = map(os.path.abspath, (src, dest))

    print('Sync %s -> %s' % (src, dest))

    if not checkSrcDest(src, dest):
        return
    try:
        smartCopy(src, dest)
    except LookupError as e:
        print ('Path not found')

    print('Done')


if __name__ == '__main__':
    main()