Re: Dynamically naming objects.
Thanks for all this info.
I'll try all your scripts out.
from what you guys have said, I did the following:
I set up a 'computer class' (I'lm leaving out the mutators)
class computer:
def __init__(self, IP, owner, ph_connections, connections):
assert isIP(IP) == True
self.IP = IP
self.owner = owner
for i in ph_connections:
assert isIP(i) == True
self.ph_connections = ph_connections
for i in connections:
assert isIP(i) == True
self.connections = connections
isIP(IP) is a function that checks if it looks like an IP based on
some rules.
Anyway
I set up a list of users, each with their computer object named after
them, so:
users = ['Kal', 'Noob', 'Fred']
I ran through them with some code based vaguely on what you guys have
said:
for i in users:
i = computer('insert some sort of IP here', i, [], [])
I set up the ph_connections and connections lists as empty for ease of
use.
Does this code seem right? I can't get it to work.
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Re: Dynamically naming objects.
Kalibr wrote: On Jun 7, 1:20 pm, Hans Nowak [EMAIL PROTECTED] wrote: Kalibr wrote: I've been developing a small script to fiddle with classes, and came accross the following problem. Assuming I get some user input asking for a number, how would I spawn 'n' objects from a class? i.e. I have a class class 'user' and I don't know how many of them I want to spawn. Any ideas? Sure. This will give you a list of n instances of user: [user() for i in range(n)] Of course, you could also use a good old for loop: for i in range(n): u = user() ...do something with u... Hope this helps! -- Hans Nowak (zephyrfalcon at gmail dot com)http://4.flowsnake.org/ whoops, replied to author What I wanted to ask before was won't 'u' be overwritten with a new object each time the loop ticks over? Yes, so you have to store it somewhere, if you want to keep the object around. The list comprehension mentioned above stores all the objects in a list, after which they can be accessed at will via indexing. what I want to do is have, say 5 users in a game, so I'd have to spawn 5 objects. I can't do that because I have'nt hardcoded any object names for them. or does it somehow work? how would I address them if they all have the name 'u'? users = [user() for i in range(n)] # use: users[0], users[1], etc -- Hans Nowak (zephyrfalcon at gmail dot com) http://4.flowsnake.org/ -- http://mail.python.org/mailman/listinfo/python-list
Re: Dynamically naming objects.
On Jun 8, 2:58 am, Hans Nowak [EMAIL PROTECTED] wrote: Kalibr wrote: On Jun 7, 1:20 pm, Hans Nowak [EMAIL PROTECTED] wrote: Kalibr wrote: I've been developing a small script to fiddle with classes, and came accross the following problem. Assuming I get some user input asking for a number, how would I spawn 'n' objects from a class? i.e. I have a class class 'user' and I don't know how many of them I want to spawn. Any ideas? Sure. This will give you a list of n instances of user: [user() for i in range(n)] Of course, you could also use a good old for loop: for i in range(n): u = user() ...do something with u... Hope this helps! -- Hans Nowak (zephyrfalcon at gmail dot com)http://4.flowsnake.org/ whoops, replied to author What I wanted to ask before was won't 'u' be overwritten with a new object each time the loop ticks over? Yes, so you have to store it somewhere, if you want to keep the object around. The list comprehension mentioned above stores all the objects in a list, after which they can be accessed at will via indexing. what I want to do is have, say 5 users in a game, so I'd have to spawn 5 objects. I can't do that because I have'nt hardcoded any object names for them. or does it somehow work? how would I address them if they all have the name 'u'? users = [user() for i in range(n)] # use: users[0], users[1], etc -- Hans Nowak (zephyrfalcon at gmail dot com)http://4.flowsnake.org/ Ok, wait, I see where this is going. I just did the list comprehension. I was under some misguided idea that you actually had to have a unique variable name for all the new objects you spawned. Thanks for all you help guys! -- http://mail.python.org/mailman/listinfo/python-list
Dynamically naming objects.
I've been developing a small script to fiddle with classes, and came accross the following problem. Assuming I get some user input asking for a number, how would I spawn 'n' objects from a class? i.e. I have a class class 'user' and I don't know how many of them I want to spawn. Any ideas? -- http://mail.python.org/mailman/listinfo/python-list
Re: Dynamically naming objects.
Kalibr wrote: I've been developing a small script to fiddle with classes, and came accross the following problem. Assuming I get some user input asking for a number, how would I spawn 'n' objects from a class? i.e. I have a class class 'user' and I don't know how many of them I want to spawn. Any ideas? Sure. This will give you a list of n instances of user: [user() for i in range(n)] Of course, you could also use a good old for loop: for i in range(n): u = user() ...do something with u... Hope this helps! -- Hans Nowak (zephyrfalcon at gmail dot com) http://4.flowsnake.org/ -- http://mail.python.org/mailman/listinfo/python-list
Re: Dynamically naming objects.
Something like this?
class User:
def __init__(self, name):
self.name = name
def __str__(self):
return self.name
n = 10
users = []
for i in range(n):
users.append(User('user%d' % i))
print users[9]
print users[4]
Cheers,
Paul
On Sat, Jun 7, 2008 at 3:59 AM, Kalibr [EMAIL PROTECTED] wrote:
I've been developing a small script to fiddle with classes, and came
accross the following problem. Assuming I get some user input asking
for a number, how would I spawn 'n' objects from a class?
i.e. I have a class class 'user' and I don't know how many of them I
want to spawn.
Any ideas?
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Re: Dynamically naming objects.
On Jun 7, 1:20 pm, Hans Nowak [EMAIL PROTECTED] wrote: Kalibr wrote: I've been developing a small script to fiddle with classes, and came accross the following problem. Assuming I get some user input asking for a number, how would I spawn 'n' objects from a class? i.e. I have a class class 'user' and I don't know how many of them I want to spawn. Any ideas? Sure. This will give you a list of n instances of user: [user() for i in range(n)] Of course, you could also use a good old for loop: for i in range(n): u = user() ...do something with u... Hope this helps! -- Hans Nowak (zephyrfalcon at gmail dot com)http://4.flowsnake.org/ whoops, replied to author What I wanted to ask before was won't 'u' be overwritten with a new object each time the loop ticks over? what I want to do is have, say 5 users in a game, so I'd have to spawn 5 objects. I can't do that because I have'nt hardcoded any object names for them. or does it somehow work? how would I address them if they all have the name 'u'? -- http://mail.python.org/mailman/listinfo/python-list
Re: Dynamically naming objects.
Kalibr [EMAIL PROTECTED] writes:
what I want to do is have, say 5 users in a game, so I'd have to
spawn 5 objects. I can't do that because I have'nt hardcoded any
object names for them.
Python's built-in mapping type 'dict' is a good fit for this.
Given:
* a 'User' class that is initialised with the user's name
* some way of getting a sequence of names (that you haven't told us
yet), that I'll bind here to the name 'sequence_of_names'
You can then write::
game_users = {}
for name in sequence_of_names:
game_users[name] = User(name)
This will result in 'game_users' bound to a dict with names mapping to
separate instances of the 'User' type. These instances can each be
addressed by name from the 'game_users' mapping as
'game_users[Fred]', etc.
--
\ Pinky, are you pondering what I'm pondering? Well, I think |
`\ so, Brain, but do I really need two tongues? -- _Pinky and |
_o__) The Brain_ |
Ben Finney
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Re: Dynamically naming objects.
On Jun 7, 1:20 pm, Hans Nowak [user() for i in range(n)] Kalibr wrote: or does it somehow work? how would I address them if they all have the name 'u'? users = list(User() for i in range(n)) for user in users: user.do_something() hth, Alan Isaac -- http://mail.python.org/mailman/listinfo/python-list
Re: Dynamically naming objects.
Hello, You can use this as indicated by Hans: u = [user() for i in xrange(5)] where user is a class or a function returning an object. u then is a list of user objects. or does it somehow work? how would I address them if they all have the name 'u'? You'd access members of the list as u[0], u[1], ... etc. I think you'd benefit from reading an introductory programming book. Best regards, Stefaan. -- http://mail.python.org/mailman/listinfo/python-list
