`pip install flake8-bugbear` failed in python 2.7.12

[number5]

Here is the backtrace:

λ pip install flake8-bugbear                                  ]
Collecting flake8-bugbear
  Downloading flake8-bugbear-16.7.1.tar.gz
    Complete output from command python setup.py egg_info:
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "/private/var/folders/t4/4r0q_f752vn1qr36pw1tq2280000gn/T/pip-build-mSeIFo/flake8-bugbear/setup.py", line 10, in <module>
        with open(os.path.join(current_dir, 'README.rst'), encoding='utf8') as ld_file:
    TypeError: 'encoding' is an invalid keyword argument for this function

    ----------------------------------------
Command "python setup.py egg_info" failed with error code 1 in /private/var/folders/t4/4r0q_f752vn1qr36pw1tq2280000gn/T/pip-build-mSeIFo/flake8-bugbear/

[ambv]

bugbear is Python 3 only, it says so right in the readme.

Best regards,
Łukasz Langa

On Aug 4, 2016, at 12:19 AM, Bruce Wang notifications@github.com wrote:

Here is the backtrace:

λ pip install flake8-bugbear ]
Collecting flake8-bugbear
Downloading flake8-bugbear-16.7.1.tar.gz
Complete output from command python setup.py egg_info:
Traceback (most recent call last):
File "", line 1, in
File "/private/var/folders/t4/4r0q_f752vn1qr36pw1tq2280000gn/T/pip-build-mSeIFo/flake8-bugbear/setup.py", line 10, in
with open(os.path.join(current_dir, 'README.rst'), encoding='utf8') as ld_file:
TypeError: 'encoding' is an invalid keyword argument for this function

----------------------------------------

Command "python setup.py egg_info" failed with error code 1 in /private/var/folders/t4/4r0q_f752vn1qr36pw1tq2280000gn/T/pip-build-mSeIFo/flake8-bugbear/
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[number5]

oops, sorry.