Message108029
| Author |
lemburg |
| Recipients |
amaury.forgeotdarc, belopolsky, brett.cannon, brian.curtin, daniel.urban, lemburg, pitrou, r.david.murray, techtonik, vstinner |
| Date |
2010年06月17日.15:03:31 |
| SpamBayes Score |
0.00017820689 |
| Marked as misclassified |
No |
| Message-id |
<4C1A3941.2080100@egenix.com> |
| In-reply-to |
<1276786156.3.0.931625302259.issue7989@psf.upfronthosting.co.za> |
| Content |
Alexander Belopolsky wrote:
>
> Alexander Belopolsky <belopolsky@users.sourceforge.net> added the comment:
>
>> To avoid the wasted memory and import time, it's better to use:
>>
>> try:
>> from _cmodule import *
>> except ImportError:
>> from _pymodule import *
>>
>
> .. also this makes it harder to prototype things in Python or have mixed Python/C modules. The goal is to use Python implementation unless native implementation exists on per function/class basis. The syntax above makes it all or nothing.
Why ?
You can have the Python parts that are used by both implementation
defined in the datetime.py module.
Alternatively, you could write:
try:
# Use the faster C version
from _module import *
except ImportError:
# Use Python
class datetime:
...
I find that rather ugly, though. |
|