Dot-notation for __getitem__ is not supported about kajiki HOT 4 CLOSED

Kajiki isn't supposed to implement everything that Genshi had. Kajiki is glad to drop a few of the misfeatures, especially those that made Genshi slow.

Now this feature here can be very convenient for the programmer, but the implementation would certainly cost something. I am not sure what is more valuable here.

I don't have the answer, I am just commenting like, don't expect Kajiki to be a clone of Genshi.

from kajiki.

don't expect Kajiki to be a clone of Genshi.

I certainly don't, but re: cost, well, even Jinja (which is universally considered a fast templating engine) supports this, so I thought this is the feature that's worth porting.

In [5]: from jinja2 import Template

In [8]: Template('{{ foo.bar }}').render(foo=foo)
Out[8]: 'baz'

from kajiki.

Uhm, I'm vaguely against this proposal for the reason that Kajiki maps your code to pure python code, which I like as it guarantees me that the code I wrote will be the resulting code. Providing this would mean injecting a call in every attribute access (which apart slowing down things) would break the guarantee that we don't inject additional behaviours in user code.

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I don't like this feature neither, getitem and getattr are two separate things in python

In [1]: spam = dict(egg='Spam')

In [2]: spam['egg']
Out[2]: 'Spam'

In [3]: spam.egg
---------------------------------------------------------------------------
AttributeError                            Traceback (most recent call last)
<ipython-input-3-1f641a831589> in <module>()
----> 1 spam.egg

AttributeError: 'dict' object has no attribute 'egg'

In [4]: pippo = type('Pippo', (object, ), dict(pluto='topolino'))()

In [5]: pippo.pluto
Out[5]: 'topolino'

In [6]: pippo['pluto']
---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
<ipython-input-6-dc79750a7340> in <module>()
----> 1 pippo['pluto']

TypeError: 'Pippo' object is not subscriptable

You may be intrested in https://stackoverflow.com/a/23689767 anyway. It's not about kajiki

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