[Python-Dev] Why can't I encode/decode base64 without importing a module? (original) (raw)
M.-A. Lemburg mal at egenix.com
Tue Apr 23 18:04:37 CEST 2013
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On 23.04.2013 17:47, Guido van Rossum wrote:
On Tue, Apr 23, 2013 at 8:22 AM, M.-A. Lemburg <mal at egenix.com> wrote:
Just as reminder: we have the general purpose encode()/decode() functions in the codecs module:
import codecs r13 = codecs.encode('hello world', 'rot-13') These interface directly to the codec interfaces, without enforcing type restrictions. The codec defines the supported input and output types. As an implementation mechanism I see nothing wrong with this. I hope the codecs module lets you introspect the input and output types of a codec given by name?
At the moment there is no standard interface to access supported input and output types... but then: regular Python functions or methods also don't provide such functionality, so no surprise there ;-)
It's mostly a matter of specifying the supported type combinations in the codec documentation.
BTW: What would be a use case where you'd want to programmatically access such information before calling the codec ?
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