Spacing around colons can crash pycodestyle_magic #20
Description
Using pycodestyle in "cell-at-a-time" mode, with %%pycodestyle as the first line in a cell seems to be very sensitive the spacing around colons.
In particular, a space before a colon that introduces a new block, such as:
for i in range(5) :
will crash it with an error that appears to be related to parsing windows drive names, though I'm using this on linux.
Similar errors occur in defining a dictionary if there is a space before a colon or no space after a colon.
---------------------------------------------------------------------------
ValueError Traceback (most recent call last)
<ipython-input-4-ec9d1225e653> in <module>()
----> 1 get_ipython().run_cell_magic('pycodestyle', '', 'for i in range(4) :\n pass')
/usr/lib64/python3.6/site-packages/IPython/core/interactiveshell.py in run_cell_magic(self, magic_name, line, cell)
2115 magic_arg_s = self.var_expand(line, stack_depth)
2116 with self.builtin_trap:
-> 2117 result = fn(magic_arg_s, cell)
2118 return result
2119
/home/p210nb/.local/lib64/python3.6/site-packages/pycodestyle_magic.py in pycodestyle(line, cell, auto)
173 #logger.info(line)
174 # on windows drive path also contains :
--> 175 line, col, error = line.split(':')[-4:]
176 # do not subtract 1 for line for %%pycodestyle, inc pre py3.6 string
177 if auto:
ValueError: too many values to unpack (expected 3)