UnicodeDecodeError: 'gbk' codec can't decode byte 0xaf in position

[fangaofeng]

Description

swagger-editer generator server python flask based connexion, when i run app.

Expected bahaviour

Traceback (most recent call last):
File "E:\eclipsephp\plugins\org.python.pydev_4.5.4.201601292234\pysrc\pydevd.py", line 1524, in
globals = debugger.run(setup['file'], None, None, is_module)
File "E:\eclipsephp\plugins\org.python.pydev_4.5.4.201601292234\pysrc\pydevd.py", line 931, in run
pydev_imports.execfile(file, globals, locals) # execute the script
File "E:\eclipsephp\plugins\org.python.pydev_4.5.4.201601292234\pysrc_pydev_imps_pydev_execfile.py", line 18, in execfile
exec(compile(contents+"\n", file, 'exec'), glob, loc)
File "E:\pworkspace\testrest\examples\python-flask-server\app.py", line 6, in
app.add_api('swagger.yaml', arguments={'title': ''})
File "E:\pythonvenv\flaskvenv\lib\site-packages\connexion\app.py", line 146, in add_api
debug=self.debug)
File "E:\pythonvenv\flaskvenv\lib\site-packages\connexion\api.py", line 89, in init
swagger_template = swagger_yaml.read()
UnicodeDecodeError: 'gbk' codec can't decode byte 0xaf in position 266: illegal multibyte sequence

Actual behaviour

Steps to reproduce

orig:
with swagger_yaml_path.open() as swagger_yaml:
swagger_template = swagger_yaml.read()
change:
with swagger_yaml_path.open(encoding='utf-8') as swagger_yaml:
swagger_template = swagger_yaml.read()

and then is run success.

Additional info:

Output of the commands:

• python --version3.5.1
• pip show connexion | grep "^Version\:"
  connexion-1.0.97
  in windows10 64 run

[jmcs]

By default, python tries to open files with your system's prefered encoding (as returned by locale.getpreferredencoding()) Hardcoding 'utf-8' breaking connexion for people that want to use other encodings. A solution would be to include an optional encoding argument to add_api