[Tutor] Dynamically naming functions
kent37 at tds.net
Fri Mar 10 12:36:10 CET 2006
Ed Singleton wrote:
> How does one go about creating functions, classes, or callable objects
> when you don't know their name in advance? (For example you want to
> read their names in from a text file or database).
> I want to use this in a few different places. For example Faces, the
> Python Project Management Planner Tool Thingy, uses nested functions
> to put tasks within a project:
> def MyProject():
> start = "2006-03-06"
> resource = Me
> def Task1():
> start = "2006-03-13"
> def Task2():
> effort = "1w"
> I'd like to load these from a database (using SQLObject), but I'm not
> sure how I can define the name of the function from a filed in a
> database (or read in from a text file).
This is truly bizarre use of nested functions. Faces must be looking at
the compiled function objects to pick this out.
I would look into the Project objects themselves and see if there is a
way to create them dynamically, rather than trying to build this
structure dynamically at run time.
> I'd also like to be able to do this in CherryPy/TurboGears so that I
> can create a dynamic site structure based on fields in a database.
This seems more practical. I would define a class that is configured by
the database can be used as a CP model object. Then you can insert the
class into the CP site structure using setattr().
In general you can set an attribute of an object using setattr():
setattr(foo, 'bar', 3)
is the same as
foo.bar = 3
but the attribute name is specified as a string so it can be determined
> Tutor maillist - Tutor at python.org
More information about the Tutor