Unhandled exception if token is not defined

[ei-grad]

Python 3.6.3 (default, Oct 24 2017, 14:48:20) 
Type 'copyright', 'credits' or 'license' for more information
IPython 6.2.1 -- An enhanced Interactive Python. Type '?' for help.

In [1]: import telepyth

In [2]: %telepyth "hello, world"
Out[2]: 'hello, world'
---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
<ipython-input-2-f9dd9ac11554> in <module>()
----> 1 get_ipython().run_line_magic('telepyth', '"hello, world"')

/usr/lib/python3.6/site-packages/IPython/core/interactiveshell.py in run_line_magic(self, magic_name, line, _stack_depth)
   2093                 kwargs['local_ns'] = sys._getframe(stack_depth).f_locals
   2094             with self.builtin_trap:
-> 2095                 result = fn(*args,**kwargs)
   2096             return result
   2097 

<decorator-gen-116> in telepyth(self, line, cell)

/usr/lib/python3.6/site-packages/IPython/core/magic.py in <lambda>(f, *a, **k)
    185     # but it's overkill for just that one bit of state.
    186     def magic_deco(arg):
--> 187         call = lambda f, *a, **k: f(*a, **k)
    188 
    189         if callable(arg):

~/.local/lib/python3.6/site-packages/telepyth/magics.py in telepyth(self, line, cell)
    113         stream.seek(0)
    114 
--> 115         self.send(stream, mode)
    116 
    117     def send(self, payload, markdown=False):

~/.local/lib/python3.6/site-packages/telepyth/magics.py in send(self, payload, markdown)
    119         if not self.client:
    120             print('Nobody to notify: token is not set.', file=stderr)
--> 121         elif self.client(payload, markdown) != 200:
    122             print('Notification was failed.', file=stderr)
    123 

~/.local/lib/python3.6/site-packages/telepyth/client.py in __call__(self, text, markdown)
     48 
     49     def __call__(self, text, markdown=True):
---> 50         url = self.base_url + self.access_token
     51 
     52         req = Request(url, method='POST')

TypeError: must be str, not NoneType

[daskol]

It seems there is no good fix for this issue. In the upcomming commit TelePythClient just checks token and raise value exception but still it is not safe for user.