Dynamical loading of modules
steve at holdenweb.com
Mon Oct 3 23:37:50 CEST 2005
Carsten Haese wrote:
> On Mon, 2005-10-03 at 16:41, Carsten Haese wrote:
>>On Mon, 2005-10-03 at 15:52, Jacob Kroon wrote:
>>>Hi, I'm having some problems with implementing dynamical module loading.
>>>First let me
>>>describe the scenario with an example:
>>>apple.py defines a class 'Apple', banana defines a class 'Banana'. The
>>>problem lies in the
>>>fact that I want to be able to just drop a new .py-file, for instance
>>>peach.py, and not change
>>>__init__.py, and it should automatically pickup the new file in
>>>__init__.py. I've come halfway
>>>by using some imp module magic in __init__.py, but the problem I have is
>>>that the instantiated
>>>objects class-names becomes fruit.apple.Apple/fruit.banana.Banana, whild
>>>I want it to be
>>>Is there a smarter way of accomplishing what I am trying to do ?
>>>If someone could give me a small example of how to achieve this I would
>>>be very grateful.
>>How about something like this in fruit/__init__.py:
>>fruit_dir = os.path.dirname(__file__)
>>fruit_files = [x for x in os.listdir(fruit_dir) if (x[-3:]=='.py' and x!='__init__.py')]
>>for fruit_file in fruit_files:
>> module_name = fruit_files[:-3]
> ^^^^^^^^^^^ This should be fruit_file, of course.
>> exec "from %s import *" % module_name
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