eliben <[EMAIL PROTECTED]> wrote:
> Hello,
>
> I want to be able to do something like this:
>
> Employee = Struct(name, salary)
>
> And then:
>
> john = Employee('john doe', 34000)
> print john.salary
>
> Basically, Employee = Struct(name, salary) should be equivalent to:
>
> class Employee(object):
> def __init__(self, name, salary):
> self.name = name
> self.salary = salary
>
> Ruby's 'Scruct' class (http://ruby-doc.org/core/classes/Struct.html)
> does this. I suppose it can be done with 'exec', but is there a more
> Pythonic way ?
>
> Thanks in advance
I have some old code laying around which should do what you want. It was
originally written by Kragen Sitaker in 2001-10-16 and is public domain.
def defstruct(*fields):
class Struct(object):
def __init__(self, *contents):
if len(contents) != len(self.structfields):
raise TypeError(
"wrong number of arguments: expected %d %s, got %d" %
(len(self.structfields),
repr(self.structfields),
len(contents)))
for field, content in zip(self.structfields, contents):
setattr(self, field, content)
Struct.structfields = fields
return Struct
Use:
Employee = defstruct("name", "salary")
john = Employee('john doe', 34000)
print john.salary
Marc
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