当我从pgadmin 4创建数据库时，它始终显示错误弹出：错误保存属性。
我的计算机信息：
- Linux Mint 18.3
- pgadmin 4 2.1来自https://wiki.postgresql.org/wiki/apt
- Python 3.5.2(默认，2017年11月23日，16:37:01([GCC 5.4.0 20160609]
我在pgadmin4.log中的错误：
Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/werkzeug/serving.py", line 180, in run_wsgi
execute(self.server.app)
File "/usr/lib/python3/dist-packages/werkzeug/serving.py", line 168, in execute
application_iter = app(environ, start_response)
File "/usr/lib/python3/dist-packages/flask/app.py", line 1836, in __call__
return self.wsgi_app(environ, start_response)
File "/usr/lib/python3/dist-packages/flask/app.py", line 1820, in wsgi_app
response = self.make_response(self.handle_exception(e))
File "/usr/lib/python3/dist-packages/flask/app.py", line 1403, in handle_exception
reraise(exc_type, exc_value, tb)
File "/usr/lib/python3/dist-packages/flask/_compat.py", line 33, in reraise
raise value
File "/usr/lib/python3/dist-packages/flask/app.py", line 1817, in wsgi_app
response = self.full_dispatch_request()
File "/usr/lib/python3/dist-packages/flask/app.py", line 1477, in full_dispatch_request
rv = self.handle_user_exception(e)
File "/usr/lib/python3/dist-packages/flask/app.py", line 1381, in handle_user_exception
reraise(exc_type, exc_value, tb)
File "/usr/lib/python3/dist-packages/flask/_compat.py", line 33, in reraise
raise value
File "/usr/lib/python3/dist-packages/flask/app.py", line 1475, in full_dispatch_request
rv = self.dispatch_request()
File "/usr/lib/python3/dist-packages/flask/app.py", line 1461, in dispatch_request
return self.view_functions[rule.endpoint](**req.view_args)
File "/usr/lib/python3/dist-packages/flask/views.py", line 84, in view
return self.dispatch_request(*args, **kwargs)
File "/usr/share/pgadmin4/web/pgadmin/browser/utils.py", line 242, in dispatch_request
return method(*args, **kwargs)
File "/usr/share/pgadmin4/web/pgadmin/browser/server_groups/servers/databases/__init__.py", line 157, in wrapped
return f(self, *args, **kwargs)
File "/usr/share/pgadmin4/web/pgadmin/browser/server_groups/servers/databases/__init__.py", line 489, in create
data=data, conn=self.conn
File "/usr/lib/python3/dist-packages/flask/templating.py", line 128, in render_template
context, ctx.app)
File "/usr/lib/python3/dist-packages/flask/templating.py", line 110, in _render
rv = template.render(context)
File "/usr/lib/python3/dist-packages/jinja2/environment.py", line 989, in render
return self.environment.handle_exception(exc_info, True)
File "/usr/lib/python3/dist-packages/jinja2/environment.py", line 754, in handle_exception
reraise(exc_type, exc_value, tb)
File "/usr/lib/python3/dist-packages/jinja2/_compat.py", line 37, in reraise
raise value.with_traceback(tb)
File "/usr/share/pgadmin4/web/pgadmin/browser/server_groups/servers/databases/templates/databases/sql/default/create.sql", line 10, in top-level template code
ENCODING = {{ data.encoding|qtLiteral }}{% endif %}{% if data.datcollate %}
File "/usr/share/pgadmin4/web/pgadmin/utils/driver/psycopg2/__init__.py", line 2079, in qtLiteral
adapted.encoding = 'utf8'
AttributeError: attribute 'encoding' of 'psycopg2.extensions.QuotedString' objects is not writable
在Python代码中评论两行解决了问题：
sudo sed -i '2078,2079 s/^[^#]/#/'
/usr/share/pgadmin4/web/pgadmin/utils/driver/psycopg2/__init__.py
行是：
if hasattr(adapted, 'encoding'):
adapted.encoding = 'utf8'
可能需要psycopg> 2.6.2。请参阅https://github.com/psycopg/psycopg2/issues/331
安装python-psycopg2补充，在ubuntu中：
sudo apt-get install python-psycopg2
对我有用！
问候！