help needed with class and method confusion

[Cndistin]

First I am sorry for the title but I an newbie enough to now know how to better
word it.

The problem part of my code is
class Application:
class Moon:
def __init__(self, name):
self.name = name
def __init__(self):
self.moons = []
names = ["Io", "Europa", "Ganymeade"]
for name in names:
setattr(self, name, Moon(name))
I would like to somehow get self.moons to equal
[self.Io, self.Europa, self.Ganymeade]. I had hoped on using
self.moons as an iterant in "for" loops to be able to alter each
in turn.

Thanks in advance for any possible help.

[Sean Ross]

Re: help needed with class and method confusion

"Cndistin" <cndistin@aol.c om> wrote in message
news:2004010610 2232.19889.0000 2028@mb-m01.aol.com...[color=blue]
> The problem part of my code is
> class Application:
> class Moon:
> def __init__(self, name):
> self.name = name
> def __init__(self):
> self.moons = []
> names = ["Io", "Europa", "Ganymeade"]
> for name in names:
> setattr(self, name, Moon(name))
> I would like to somehow get self.moons to equal
> [self.Io, self.Europa, self.Ganymeade]. I had hoped on using
> self.moons as an iterant in "for" loops to be able to alter each
> in turn.
>
> Thanks in advance for any possible help.[/color]

class Application:
class Moon:
def __init__(self, name):
self.name = name
def __repr__(self):
"added this to pretty up the printing of a.moons"
return "Moon(%s)"%self .name

def __init__(self):
self.moons = []
names = ["Io", "Europa", "Ganymeade"]
for name in names:
# took Moon(name) out of the setattr() because we'll be
# using it again in moons.append. Also used self.Moon
# because Moon alone raises a NameError
moon = self.Moon(name)
setattr(self, name, moon)
self.moons.appe nd(moon)

a = Application()
print a.moons

# output
[Moon(Io), Moon(Europa), Moon(Ganymeade)]

HTH
Sean

[EricN]

Re: help needed with class and method confusion

Here's one way to do it (undoubtedly there are other ways as well).
Sorry, I couldn't loop the moons. Probably a programmer more clever
than I could write a factory pattern for it.

class Moon:
def __init__(self, name, diameter = 0.0, planet = "unknown"):
self.NAME = name
self.DIAMETER = diameter
self.HOMEPLANET = planet

def setMoonName(sel f, name):
self.NAME = str(name)

def getMoonName(sel f):
return self.NAME

def setMoonDiameter (self, diam):
self.DIAMETER = float(diam)

def getMoonDiameter (self):
return self.DIAMETER

def setMoonHomePlan et(self, planet):
self.HOMEPLANET = str(planet)

def getMoonHomePlan et(self):
return self.HOMEPLANET


if __name__ == "__main__":
moons = []
Io = Moon("Io", 1.0, "Jupiter")
moons.append(Io )
Europa = Moon("Europa", 2.0, "Jupiter")
moons.append(Eu ropa)
Ganymeade = Moon("Ganymeade ", 3.0, "Jupiter")
moons.append(Ga nymeade)
Titan = Moon("Titan", 3.0, "Saturn")
moons.append(Ti tan)

for x in range(len(moons )):
print moons[x].getMoonName()
print moons[x].getMoonDiamete r()
print moons[x].getMoonHomePla net()
print

[Pierre Quentel]

Re: help needed with class and method confusion

If I understand the problem, you have a planet and a number of moons turning
around it. So you should define two different classes, Planet and Moon

--------------------------------
class Moon:

def __init__(self, name):
self.name = name

class Planet:

def __init__(self,n ames):
self.moons = []
for name in names:
m=Moon(name)
setattr(self, name, m)
self.moons.appe nd(m)

satellites = ["Io", "Europa", "Ganymeade"]
Jupiter = Planet(satellit es)
-------------------------------

You'd better leave the satellite names outside of the __init__ method of
Planet,
in case you happen to work on another planet

Hope this helps,
Pierre