On 24/10/2012 13:11, inshu chauhan wrote:
I was just trying out a programme for learning classes in python
The prog below is showing an error which it should not show :
class Bag:
def __init__(self, x):
self.data = []
You do nothing with x here.
def add(self, x):
self.data.append(x)
def addtwice(self, x):
self.add(x)
self.add(x)
y = Bag(4)
Create y with an argument of 4 which is discarded in the initialiser.
print " Adding twice of %4.2f gives " % (y.addtwice())
There's no argument passed to addtwice here.
Error is :
Traceback (most recent call last):
File "Z:\learning Python\learn5.py", line 35, in <module>
print " Adding twice of %4.2f gives " % (y.addtwice())
TypeError: addtwice() takes exactly 2 arguments (1 given)
Exactly what I'd expect to happen. What did you expect?
why the prog is having this error with self nd x as arguments ???
What x argument? Clearly wrong as I've pointed out above.
--
Cheers.
Mark Lawrence.
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