how to copy unique files to new directory python

1# dupFinder.py
2import os, sys
3import hashlib
4 
5def findDup(parentFolder):
6    # Dups in format {hash:[names]}
7    dups = {}
8    for dirName, subdirs, fileList in os.walk(parentFolder):
9        print('Scanning %s...' % dirName)
10        for filename in fileList:
11            # Get the path to the file
12            path = os.path.join(dirName, filename)
13            # Calculate hash
14            file_hash = hashfile(path)
15            # Add or append the file path
16            if file_hash in dups:
17                dups[file_hash].append(path)
18            else:
19                dups[file_hash] = [path]
20    return dups
21 
22 
23# Joins two dictionaries
24def joinDicts(dict1, dict2):
25    for key in dict2.keys():
26        if key in dict1:
27            dict1[key] = dict1[key] + dict2[key]
28        else:
29            dict1[key] = dict2[key]
30 
31 
32def hashfile(path, blocksize = 65536):
33    afile = open(path, 'rb')
34    hasher = hashlib.md5()
35    buf = afile.read(blocksize)
36    while len(buf) > 0:
37        hasher.update(buf)
38        buf = afile.read(blocksize)
39    afile.close()
40    return hasher.hexdigest()
41 
42 
43def printResults(dict1):
44    results = list(filter(lambda x: len(x) > 1, dict1.values()))
45    if len(results) > 0:
46        print('Duplicates Found:')
47        print('The following files are identical. The name could differ, but the content is identical')
48        print('___________________')
49        for result in results:
50            for subresult in result:
51                print('\t\t%s' % subresult)
52            print('___________________')
53 
54    else:
55        print('No duplicate files found.')
56 
57 
58if __name__ == '__main__':
59    if len(sys.argv) > 1:
60        dups = {}
61        folders = sys.argv[1:]
62        for i in folders:
63            # Iterate the folders given
64            if os.path.exists(i):
65                # Find the duplicated files and append them to the dups
66                joinDicts(dups, findDup(i))
67            else:
68                print('%s is not a valid path, please verify' % i)
69                sys.exit()
70        printResults(dups)
71    else:
72        print('Usage: python dupFinder.py folder or python dupFinder.py folder1 folder2 folder3')
73