Lint issue with new version of flake8-comprehensions plugin

[ShaharNaveh]

flake8-comprehensions have released a new version (3.2.1), and now when running ./ci/code_checks.sh lint I get this output:

flake8 --version
3.7.9 (flake8-comprehensions: 3.2.1, mccabe: 0.6.1, pycodestyle: 2.5.0, pyflakes: 2.1.1) CPython 3.8.1 on Linux
Linting .py code
./pandas/tests/io/parser/test_network.py:208:21: C412 Unnecessary set comprehension - 'in' can take a generator.
Linting .py code DONE

(feel free to close this issue if this is happening because I have python version 3.8.1)

INSTALLED VERSIONS

commit : 7c94949
python : 3.8.1.final.0
python-bits : 64
OS : Linux
OS-release : 5.4.13.a-1-hardened
machine : x86_64
processor :
byteorder : little
LC_ALL : None
LANG : en_US.UTF-8
LOCALE : en_US.UTF-8

pandas : 1.0.0rc0+107.g7c94949dc
numpy : 1.18.1
pytz : 2019.3
dateutil : 2.8.1
pip : 19.3.1
setuptools : 45.1.0
Cython : 0.29.14
pytest : 5.3.3
hypothesis : 5.2.0
sphinx : 2.3.1
blosc : 1.8.3
feather : None
xlsxwriter : 1.2.7
lxml.etree : 4.4.2
html5lib : 1.0.1
pymysql : None
psycopg2 : None
jinja2 : 2.10.3
IPython : 7.11.1
pandas_datareader: None
bs4 : 4.8.2
bottleneck : 1.3.1
fastparquet : 0.3.2
gcsfs : None
lxml.etree : 4.4.2
matplotlib : 3.1.2
numexpr : 2.7.1
odfpy : None
openpyxl : 3.0.1
pandas_gbq : None
pyarrow : None
pytables : None
pytest : 5.3.3
s3fs : 0.4.0
scipy : 1.4.1
sqlalchemy : 1.3.12
tables : 3.6.1
tabulate : 0.8.6
xarray : 0.14.1
xlrd : 1.2.0
xlwt : 1.3.0
xlsxwriter : 1.2.7
numba : 0.47.0

[ShaharNaveh]

take