Re: iterating initalizations
import random
from rtcmix import *
from chimes_source import * # Chime.play()
from rhythmblock import * # rhythmBlock.rhythmTwist() and
rhythmBlock.printStuff()
from pitchblock import * # pitchBlock.pitchTwist() and
pitchBlock.printStuff()
from lenEval import * #greaterThan.sovler()
indexrand = random.Random()
indexrand.seed(2)
chime = Chime()
notes = pitchBlock()
rhythm = rhythmBlock()
solve = greaterThan()
class arrayBlock:
def __init__(self, theTempo, start):
self.__A = []
self.__B = []
self.__start = start
self.__tempo = theTempo
def player(self, length, tempo, octave, pan, seed):
tempo = (120, self.__tempo)
for a in range(length):
one = indexrand.randint(0, 3)
two = indexrand.randint(0, 7)
self.__A = self.__A + notes.pitchTwist(one , two)
for b in range(length):
one = indexrand.randint(0, 3)
two = indexrand.randint(0, 7)
self.__B = self.__B + rhythm.rhythmTwist(one , two)
lenA = len(self.__A)
lenB = len(self.__B)
var = solve.solver(lenA, lenB)
for c in range(var):
print self.__A[c]
self.__start = self.__start + tb(self.__B[var])
chime.play(self.__start, self.__A[var], octave, pan,
seed)
This almost does exactly what I want, and is far cleaner than my
previous attempts.
The only problem is that now all my arguments are being passed as zeros!
I assume this has to do with WHEN I'm referencing self.__A and self.__B?
AS
On Dec 23, 2008, at 10:20 AM, Steve Holden wrote:
D'Arcy J.M. Cain wrote:
On Mon, 22 Dec 2008 22:32:17 -0500
Aaron Stepp stepp.aa...@gmail.com wrote:
Instead of writing a long list of initializations like so:
A = [ ]
B = [ ]
...
Y = [ ]
Z = [ ]
I'd like to save space by more elegantly turning this into a
loop. If
Well, if all you want is a loop:
for v in vars:
locals()[v] = []
Note that this isn't guaranteed to work. While locals() will return a
dict containing the names and values from the local namespace, you
won't
affect the local namespace by assigning values to the appropriate
keys:
def f():
... a = hello
... locals()[a] = goodbye
... print a
...
f()
hello
If you look at the function's code you will see that the local a is
accessed using the LOAD_FAST and STORE_FAST opcodes, which take
advantage of the knowledge that the name is local - the interpreter
analyzed the function body looking for assignments to non-globals, and
optimizes its treatment of such names.
dis.dis(f)
2 0 LOAD_CONST 1 ('hello')
3 STORE_FAST 0 (a)
3 6 LOAD_CONST 2 ('goodbye')
9 LOAD_GLOBAL 0 (locals)
12 CALL_FUNCTION0
15 LOAD_CONST 3 ('a')
18 STORE_SUBSCR
4 19 LOAD_FAST0 (a)
22 PRINT_ITEM
23 PRINT_NEWLINE
24 LOAD_CONST 0 (None)
27 RETURN_VALUE
It's hard to tell if that's what you actually need though without
deeper analysis of your requirements.
I think it's unlikely that the OP really does need to create names
dynamically, and should look at using either a dict indexed by the
letters of self.__abet, or a list indexed from 0 to 24 instead. But
you
*are* correct about the need for a little more information ;-)
regards
Steve
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iterating initalizations
Hi all: I'm new to python and trying to save time and code by iterating through list initializations as well as the assignments. I have the following code: import random from rtcmix import * from chimes_source import * from rhythmblock import * from pitchblock import * indexrand = random.Random() indexrand.seed(2) rhythm = rhythmBlock() pitch = pitchBlock() class pitchAndRhythm: def __init__self: self.__abet = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' def listCreate(self, num): if num 25: print Oops. This won't work else: for a in range(num): b = indexrand.randint(0, 3) c = indexrand.randint(0, 7) index = self.__abet[a] index = [ ] index = index.append(rhythm.rhythmTwist(b, c)) This doesn't do what I expect (probably because I don't have a clue what I'm doing!): initalizing, then filling new arrays, each new one called A[ ], then B[ ], etc. This seems very un-pythonic, and I'm sure there is a right way to do it. I'm just lost! Thanks Aaron Stepp -- http://mail.python.org/mailman/listinfo/python-list
Re: iterating initalizations
On Dec 22, 2008, at 10:15 PM, r wrote: I can't check you code because i don't have these modules but here is the code with proper indention import random from rtcmix import * from chimes_source import * from rhythmblock import * from pitchblock import * indexrand = random.Random() indexrand.seed(2) rhythm = rhythmBlock() pitch = pitchBlock() class pitchAndRhythm: def __init__(self): self.__abet = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' def listCreate(self, num): if num 25: print Oops. This won't work else: for a in range(num): b = indexrand.randint(0, 3) c = indexrand.randint(0, 7) index = self.__abet[a] index = [ ] index = index.append(rhythm.rhythmTwist(b, c)) take 2: notice the ( and ) around the arg to __init__ Thanks for the help so far, I think I'm starting to get a hang of the syntax. I think I need to state my goal more clearly. Instead of writing a long list of initializations like so: A = [ ] B = [ ] ... Y = [ ] Z = [ ] I'd like to save space by more elegantly turning this into a loop. If I need to just write it out, I guess that's ok... but it would be much cleaner. I'm a composer, not a programmer, so some of this is quite above me. I usually ask as a last resort, but I've been through the tutorial and didn't find this. I've got a couple python books, but I'd like to finish this piece sooner than later. Thanks! AS -- http://mail.python.org/mailman/listinfo/python-list
Re: iterating initalizations
On Dec 22, 2008, at 10:43 PM, Chris Rebert wrote: On Mon, Dec 22, 2008 at 7:32 PM, Aaron Stepp stepp.aa...@gmail.com wrote: snip Thanks for the help so far, I think I'm starting to get a hang of the syntax. I think I need to state my goal more clearly. Instead of writing a long list of initializations like so: A = [ ] B = [ ] ... Y = [ ] Z = [ ] I'd like to save space by more elegantly turning this into a loop. If I need to just write it out, I guess that's ok... but it would be much cleaner. I'm a composer, not a programmer, so some of this is quite above me. So, are these variables supposed to be module-level, or attributes of class pitchAndRhythm, or what? Also, are you going to use the variables normally or are you going to need variable variables (e.g. like $$var in PHP, which gives the value of the variable with the name of the string stored in $var)? Cheers, Chris -- Follow the path of the Iguana... http://rebertia.com The're going to only be part of the pitchAndRhythm class. Simply put, I just need enough arrays to hold a list of pitches/rhythms. Then I'll have each list member returned to an instrument defined in another module. As I'm hacking away at the code, I'm realizing that maybe I can do this with just and A = [] and B = []. But I'm not sure... Thanks again. AS -- http://mail.python.org/mailman/listinfo/python-list
