Install problem in v0.4 with python-3.6

[yurivict]

===>  Configuring for py36-OpenFermion-0.4
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "setup.py", line 22, in <module>
    long_description = open('README.rst').read()
  File "/usr/local/lib/python3.6/encodings/ascii.py", line 26, in decode
    return codecs.ascii_decode(input, self.errors)[0]
UnicodeDecodeError: 'ascii' codec can't decode byte 0xc3 in position 6126: ordinal not in range(128)

Succeeds with python-2.7

[babbush]

Hmm, haven't seen this one before. You run into this while trying to install the develop branch?

[yurivict]

You run into this while trying to install the develop branch?

No, it's with version 0.4.

[kevinsung]

@yurivict Would you mind trying again after replacing the line

long_description = open('README.rst').read()

with

long_description = open('README.rst', encoding='utf-8').read()

in setup.py?

[kevinsung]

@yurivict wait... I just realized you can't do that if you're installing from pip; you'd need to get the source code (for instance, by cloning this repository) and install it from source.

[kevinsung]

The problem seems to be that on some systems (including @yurivict 's), Python uses the ASCII encoding by default to read files, but we probably didn't limit ourselves to a 128-character alphabet when writing the README. So perhaps we should update setup.py to explicitly specify reading with UTF-8 (by making the change I mentioned above).

[babbush]

If you make that change and Travis doesn't complain, I'll happily merge.

[babbush]

@yurivict would you mind trying to install the develop branch and letting us know if @kevinsung 's PR solves your problem?

[yurivict]

would you mind trying to install the develop branch and letting us know if @kevinsung 's PR solves your problem?

===>  Configuring for py27-OpenFermion-0.4
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "setup.py", line 22, in <module>
    long_description = open('README.rst', encoding='utf-8').read()
TypeError: 'encoding' is an invalid keyword argument for this function
*** Error code 1

[kevinsung]

Wow it turns out that Python 2.7 does not support the encoding keyword argument to open. How did my PR pass Travis?!

[kevinsung]

Wait this can probably be fixed with __future__. Incoming PR...

[babbush]

@yurivict would you mind trying to install the develop branch one more time? PR #291 may have resolved it. I cannot replicate this error on my machine so your input is crucial.

[yurivict]

Yes, now the problem is gone.

[babbush]

Excellent we'll close the issue then. Thanks @kevinsung !