With a recent update, I now had a serious problem with SyntaxError: invalid syntax when starting a python2.7 instance for a laptop with $ ipython2 notebook .
The error seems to come from tornado , which uses ayncio , and there is python3.4 syntax in this library.
I can start with $ ipython3 notebook , but the application I am making use mayavi , which I believe is still intended only for python2.
Disgusting error message:
$ ipython2 notebook Traceback (most recent call last): File "/usr/local/bin/ipython2", line 11, in <module> sys.exit(start_ipython()) File "/usr/local/lib/python2.7/dist-packages/IPython/__init__.py", line 118, in start_ipython return launch_new_instance(argv=argv, **kwargs) File "/usr/local/lib/python2.7/dist-packages/traitlets/config/application.py", line 591, in launch_instance app.initialize(argv) File "<string>", line 2, in initialize File "/usr/local/lib/python2.7/dist-packages/traitlets/config/application.py", line 75, in catch_config_error return method(app, *args, **kwargs) File "/usr/local/lib/python2.7/dist-packages/IPython/terminal/ipapp.py", line 305, in initialize super(TerminalIPythonApp, self).initialize(argv) File "<string>", line 2, in initialize File "/usr/local/lib/python2.7/dist-packages/traitlets/config/application.py", line 75, in catch_config_error return method(app, *args, **kwargs) File "/usr/local/lib/python2.7/dist-packages/IPython/core/application.py", line 386, in initialize self.parse_command_line(argv) File "/usr/local/lib/python2.7/dist-packages/IPython/terminal/ipapp.py", line 300, in parse_command_line return super(TerminalIPythonApp, self).parse_command_line(argv) File "<string>", line 2, in parse_command_line File "/usr/local/lib/python2.7/dist-packages/traitlets/config/application.py", line 75, in catch_config_error return method(app, *args, **kwargs) File "/usr/local/lib/python2.7/dist-packages/traitlets/config/application.py", line 487, in parse_command_line return self.initialize_subcommand(subc, subargv) File "<string>", line 2, in initialize_subcommand File "/usr/local/lib/python2.7/dist-packages/traitlets/config/application.py", line 75, in catch_config_error return method(app, *args, **kwargs) File "/usr/local/lib/python2.7/dist-packages/traitlets/config/application.py", line 418, in initialize_subcommand subapp = import_item(subapp) File "/usr/local/lib/python2.7/dist-packages/ipython_genutils/importstring.py", line 31, in import_item module = __import__(package, fromlist=[obj]) File "/usr/local/lib/python2.7/dist-packages/notebook/notebookapp.py", line 48, in <module> from tornado import httpserver File "/usr/local/lib/python2.7/dist-packages/tornado/httpserver.py", line 34, in <module> from tornado.http1connection import HTTP1ServerConnection, HTTP1ConnectionParameters File "/usr/local/lib/python2.7/dist-packages/tornado/http1connection.py", line 28, in <module> from tornado import gen File "/usr/local/lib/python2.7/dist-packages/tornado/gen.py", line 1236, in <module> import tornado.platform.asyncio File "/usr/local/lib/python2.7/dist-packages/tornado/platform/asyncio.py", line 33, in <module> import asyncio File "/usr/local/lib/python2.7/dist-packages/asyncio/__init__.py", line 9, in <module> from . import selectors File "/usr/local/lib/python2.7/dist-packages/asyncio/selectors.py", line 39 "{!r}".format(fileobj)) from None ^ SyntaxError: invalid syntax
What will help in my choice? Tornado Drop? Something is wrong in my setup. Why is it even possible to install asyncio under python2.7?