dup_op.py

#!/usr/bin/python3
import filecmp as fcmp
import itertools as it
from pprint import pprint
import sys
import os

if 2 != len(sys.argv):
    print("Usage: dup.py [FOLDER]")
    exit()
else:
    w_dir = sys.argv[1]

lof = os.listdir(w_dir)
lof = [os.path.join(w_dir,file) for file in lof]
        
dups =dict()
scanned=[]
not_scanned=[x for x in range(len(lof))]

while(not_scanned):
    id1 = not_scanned.pop(0)
    f1 = lof[id1]
    for id2 in not_scanned:
        if id2 in scanned:
            continue
        f2 = lof[id2]
        if fcmp.cmp(f1, f2, shallow=True):
            scanned.append(id2)
            not_scanned.remove(id2)
            try:
                
                dups[f1].append(os.path.basename(f2))
            except:
                dups[f1]=[os.path.basename(f2)]
                
pprint(dups)