duplicates.py

"""
Find duplicated files module
"""
import filecmp as fcmp
from pprint import pprint
import sys
import os


def args():
    """
    Simple arguments parsing
    :return: working directory
    """

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


def duplicates(work_dir):

    """
    Finds duplicated files in a work directory
    :param work_dir: work directory (string)
    :return: dictionary with duplicated files
    """
    list_of_files = os.listdir(work_dir)
    list_of_files = [os.path.join(work_dir, file) for file in list_of_files]

    duplicates_dict = dict()
    scanned = []
    not_scanned = [x for x in range(len(list_of_files))]

    while not_scanned:
        idx_1 = not_scanned.pop(0)
        file_1 = list_of_files[idx_1]
        for idx_2 in not_scanned:
            if idx_2 in scanned:
                continue
            file_2 = list_of_files[idx_2]
            if fcmp.cmp(file_1, file_2, shallow=True):
                scanned.append(idx_2)
                not_scanned.remove(idx_2)
                try:

                    duplicates_dict[file_1].append(os.path.basename(file_2))
                except KeyError:
                    duplicates_dict[file_1] = [os.path.basename(file_2)]

    return duplicates_dict

if __name__ == "__main__":
    WORK_DIR = args()
    pprint(duplicates(WORK_DIR))

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