Re: Converting a string to an array?
Tim Chase [EMAIL PROTECTED] writes: The closest hack I could come up with was import random s = abcdefg a = [] a.extend(s) random.shuffle(a) s = .join(a) You could use import random s = list(abcdefg) random.shuffle(s) s = .join(s) which cuts down the clutter slightly. -- http://mail.python.org/mailman/listinfo/python-list
Re: Converting a string to an array?
Tim Chase wrote: While working on a Jumble-esque program, I was trying to get a string into a character array. Unfortunately, it seems to choke on the following import random s = abcefg random.shuffle(s) returning File /usr/lib/python2.3/random.py, line 250, in shuffle x[i], x[j] = x[j], x[i] TypeError: object doesn't support item assignment Yes, Python has had that same problem elsewhere, notably the mutating methods 'sort' and 'reverse'. Those problems are now reasonably well solved. What's really neat is that the names of the new methods: 'sorted' and 'reversed', are adjectives describing the return values we want, where 'sort' and 'reverse' are verbs, calling for procedures to be performed. For sorting, we had the procedure 'sort', then added the pure function 'sorted'. We had a 'reverse' procedure, and wisely added the 'reversed' function. Hmmm... what we could we possible do about 'shuffle'? -- --Bryan -- http://mail.python.org/mailman/listinfo/python-list
gracefully handling broken pipes (was Re: Converting a string to an array?)
import random
s = abcdefg
data = list(s)
random.shuffle(data)
.join(data)
'bfegacd'
fit you better?
Excellent! Thanks. I kept trying to find something like an
array() function. Too many languages, too little depth.
The program was just a short script to scramble the insides of
words to exercise word recognition, even when the word is mangled.
It's amazing how little code it takes to get this working.
When using it as a filter, if a downstream pipe (such as head)
cuts it off, I get an error:
bash# ./scramble.py bigfile.txt | head -50
[proper output here]
Traceback (most recent call last):
File ./scramble.py, line 11, in ?
print r.sub(shuffleWord, line),
IOError: [Errno 32] Broken pipe
At the moment, I'm just wrapping the lot in a try/except block,
and ignoring the error. Is there a better way to deal with this
gracefully? If some more serious IO error occurred, it would be
nice to not throw that baby out with the bath-water. Is there a
way to discern a broken pipe from other IOError exceptions?
Thanks again.
-tim
import random, sys, re
r = re.compile([A-Za-z][a-z]{3,})
def shuffleWord(matchobj):
s = matchobj.group(0)
a = list(s[1:-1])
random.shuffle(a)
return .join([s[0], .join(a), s[-1]])
try:
for line in sys.stdin.readlines():
print r.sub(shuffleWord, line),
except IOError:
pass
--
http://mail.python.org/mailman/listinfo/python-list
Re: Converting a string to an array?
[Bryan Olson] ... For sorting, we had the procedure 'sort', then added the pure function 'sorted'. We had a 'reverse' procedure, and wisely added the 'reversed' function. Hmmm... what we could we possible do about 'shuffle'? 'permuted' is the obvious answer, but that would leave us open to more charges of hifalutin elitism, so the user-friendly and slightly risque 'jiggled' it is. sorry-it-can't-be-'shuffled'-we-ran-out-of-'f's-ly y'rs - tim -- http://mail.python.org/mailman/listinfo/python-list
RE: Converting a string to an array?
Does this do what you are looking for? s = 'abcdefg'; a = []; a += s; a; ['a', 'b', 'c', 'd', 'e', 'f', 'g'] Ron Griswold Character TD R!OT Pictures [EMAIL PROTECTED] -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Tim Chase Sent: Thursday, January 12, 2006 12:20 PM To: python-list@python.org Subject: Converting a string to an array? While working on a Jumble-esque program, I was trying to get a string into a character array. Unfortunately, it seems to choke on the following import random s = abcefg random.shuffle(s) returning File /usr/lib/python2.3/random.py, line 250, in shuffle x[i], x[j] = x[j], x[i] TypeError: object doesn't support item assignment The closest hack I could come up with was import random s = abcdefg a = [] a.extend(s) random.shuffle(a) s = .join(a) This lacks the beauty of most python code, and clearly feels like there's somethign I'm missing. Is there some method or function I've overlooked that would convert a string to an array with less song-and-dance? Thanks, -tim -- http://mail.python.org/mailman/listinfo/python-list -- http://mail.python.org/mailman/listinfo/python-list
Re: Converting a string to an array?
On 2006-01-12, Ron Griswold [EMAIL PROTECTED] wrote:
This lacks the beauty of most python code, and clearly feels like
there's somethign I'm missing. Is there some method or function
I've overlooked that would convert a string to an array with less
song-and-dance? Thanks,
import random
s = abcdefg
a = []
a.extend(s)
random.shuffle(a)
s = .join(a)
Does this do what you are looking for?
s = 'abcdefg';
a = [];
a += s;
a;
['a', 'b', 'c', 'd', 'e', 'f', 'g']
That's a bit round-about:
list('abcdefg')
['a', 'b', 'c', 'd', 'e', 'f', 'g']
--
Grant Edwards grante Yow! Yow! Am I cleansed
at yet?!
visi.com
--
http://mail.python.org/mailman/listinfo/python-list
Re: Converting a string to an array?
Tim Chase wrote: The closest hack I could come up with was import random s = abcdefg a = [] a.extend(s) random.shuffle(a) s = .join(a) This lacks the beauty of most python code, and clearly feels like there's somethign I'm missing. Is there some method or function I've overlooked that would convert a string to an array with less song-and-dance? Thanks, -tim Would import random s = abcdefg data = list(s) random.shuffle(data) .join(data) 'bfegacd' fit you better? -- http://mail.python.org/mailman/listinfo/python-list
