ImportError: cannot import name ABC

[4ndr33]

Hi, i just installed csvdedupe,

i try to execute the csvdedupe cmd line, but it throw error.

ImportError: cannot import name ABC

csvdedupe DEDUPE2-TEST.csv --field_names Name --output_file output.csv
Traceback (most recent call last):
File "/bin/csvdedupe", line 5, in <module>
from csvdedupe.csvdedupe import launch_new_instance
File "/usr/lib/python2.7/site-packages/csvdedupe/csvdedupe.py", line 9, in <module>
from . import csvhelpers
File "/usr/lib/python2.7/site-packages/csvdedupe/csvhelpers.py", line 20, in <module>
import dedupe
File "/usr/lib64/python2.7/site-packages/dedupe/__init__.py", line 6, in <module>
from dedupe._init import * # noqa
File "/usr/lib64/python2.7/site-packages/dedupe/_init.py", line 1, in <module>
from dedupe.api import StaticDedupe, Dedupe # noqa: F401
File "/usr/lib64/python2.7/site-packages/dedupe/api.py", line 24, in <module>
import dedupe.datamodel as datamodel
File "/usr/lib64/python2.7/site-packages/dedupe/datamodel.py", line 8, in <module>
import dedupe.variables.base as base
File "/usr/lib64/python2.7/site-packages/dedupe/variables/base.py", line 1, in <module>
from dedupe import predicates
File "/usr/lib64/python2.7/site-packages/dedupe/predicates.py", line 11, in <module>
import dedupe.tfidf as tfidf
File "/usr/lib64/python2.7/site-packages/dedupe/tfidf.py", line 6, in <module>
from .index import Index
File "/usr/lib64/python2.7/site-packages/dedupe/index.py", line 1, in <module>
from abc import ABC, abstractmethod
ImportError: cannot import name ABC

could someone give an advice for this? thank you