Subclassing: what is wrong here?

[Paulo da Silva]

Hi!

What's wrong with this way of subclassing?

from datetime import date

class MyDate(date):
def __init__(self,year,month=None,day=None):
if type(year) is str:
# The whole date is here as a string
year,month,day=map(int,string.split(year,'-'))
if year<100:
year+=2000
date.__init__(self,year,month,day)

When I do
d=MyDate("2007-3-15")
I got
Traceback (most recent call last):
File "<stdin>", line 1, in ?
TypeError: function takes exactly 3 arguments (1 given)

Thanks for any help.

 

[Miki]

Hello Paulo,

What's wrong with this way of subclassing?
...

See http://sourceforge.net/tracker/index.php?func=detail&aid=1448640&group_id=5470&atid=105470

HTH,

 

[Paulo da Silva]

Miki escreveu:

Hello Paulo,

See http://sourceforge.net/tracker/index.php?func=detail&aid=1448640&group_id=5470&atid=105470

HTH,

Thanks!
It works this way:

class MyDate(date):
def __new__(cls,year,month=None,day=None):
if type(year) is str:
# The whole date is here as a string
year,month,day=map(int,string.split(year,'-'))
if year<100:
year+=2000
return date.__new__(cls,year,month,day)