BUG: Numpy does not recognize 'c' as PEP 3118 buffer format string

One way to demonstrate the bug without writing a C extension is

>>> np.core._internal._dtype_from_pep3118('c')
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "numpy/core/_internal.py", line 446, in _dtype_from_pep3118
    raise ValueError("Unknown PEP 3118 data type specifier %r" % spec)
ValueError: Unknown PEP 3118 data type specifier 'c'

http://legacy.python.org/dev/peps/pep-3118/#additions-to-the-struct-string-syntax

http://docs.python.org/2/library/struct.html#format-characters

[eric-wieser]

No super easy way. What I did was look at the blame of the file in question on GitHub. I knew what the fix would look like, so found the relevant like, and clicked on the commit sha1 that blame shows beside it. When looking at a commit, GitHub shows the PR it was part of, which is how I found that number.

[stephaniemdavis]

@eric-wieser Again, I thank you for this information. It sounds as if I could also do some tracing through the Pull Request meta data and find it that way. You’ve put me on to learning something else new within github: tracing changes… This is fun; hope to see you again as I go along on my journey. I take it you’re active on the numpy project…