Chain like Ruby

[komoto48g (Kazuya O'moto)]

@komoto48g

# input:
>>> buf @io.BytesIO @Image.open @np.asarray @plt.imshow
# interpreted as:
==> plt.imshow(np.asarray(Image.open(io.BytesIO(buf))))

Just an idea:

• x @ y would be equiv. to y.__call__(x) unless __rmatmal__ is explicitly defined.
• Thus, it should have lower precedence than __rmatmul__.
• But should have higher precedence than __matmul__.

I haven’t had solved this contradiction yet, but I achieved @ magic syntax by directly overwriting the interpreter of wx.py.shell:

I also think the good point about this feature of the shell is that evaluating expressions step by step allows the user to check for correct typing and results step by step.