Re: Incrementing letters
On 27 May 2005 10:52:36 -0400, Dan Sommers [EMAIL PROTECTED] wrote: And use string.ascii_letters[ 1 : ] + string.ascii_letters[ 0 ] for the second parameter to string.maketrans. Oops. Thank you Duncan and Rocco for correcting my mistake. Regards, Dan -- Dan Sommers http://www.tombstonezero.net/dan/ -- http://mail.python.org/mailman/listinfo/python-list
Re: Incrementing letters
Am Freitag, 27. Mai 2005 13:31 schrieb Michael: if(C == 'z') C='a'; else C++; if C == z: C = a else: C = chr(ord(C)+1) -- --- Heiko. see you at: http://www.stud.mh-hannover.de/~hwundram/wordpress/ pgpC3uVPL36vD.pgp Description: PGP signature -- http://mail.python.org/mailman/listinfo/python-list
Re: Incrementing letters
Heiko Wundram wrote:
Am Freitag, 27. Mai 2005 13:31 schrieb Michael:
if(C == 'z') C='a';
else C++;
if C == z:
C = a
else:
C = chr(ord(C)+1)
According to the OP's problem (with the assumption that only characters
from a-z are given) he might even try a lil LC:
s = shiftthis
''.join([chr(((ord(x)-ord('a')+1)%26)+ord('a')) for x in s])
'tijguuijt'
HTH,
Wolfram
--
http://mail.python.org/mailman/listinfo/python-list
Re: Incrementing letters
Michael wrote: Hi, I've got a string s, and i want to shift all the letters up by one, eg a-b, b-c z-a In c++ i can do this quite simply with if(C == 'z') C='a'; else C++; but i can't work out how to do this this in python?? import string upone = string.maketrans( 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ', 'bcdefghijklmnopqrstuvwxyzaBCDEFGHIJKLMNOPQRSTUVWXYZA') string.translate(I've got a string s, upone) J'wf hpu b tusjoh t Note the difference though: the Python code does what you said you wanted, whereas your sample code corrupts punctuation. -- http://mail.python.org/mailman/listinfo/python-list
Re: Incrementing letters
Duncan Booth wrote: Michael wrote: Hi, I've got a string s, and i want to shift all the letters up by one, eg a-b, b-c z-a In c++ i can do this quite simply with if(C == 'z') C='a'; else C++; but i can't work out how to do this this in python?? import string upone = string.maketrans( 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ', 'bcdefghijklmnopqrstuvwxyzaBCDEFGHIJKLMNOPQRSTUVWXYZA') string.translate(I've got a string s, upone) J'wf hpu b tusjoh t Note the difference though: the Python code does what you said you wanted, whereas your sample code corrupts punctuation. Wow, that's quite nice. You really learn something new every day :-) A minor improvement: Use string.ascii_letters as the first parameter for string.maketrans Wolfram -- http://mail.python.org/mailman/listinfo/python-list
Re: Incrementing letters
On 5/27/05, Michael [EMAIL PROTECTED] wrote: Hi, I've got a string s, and i want to shift all the letters up by one, eg a-b, b-c z-a In c++ i can do this quite simply with if(C == 'z') C='a'; else C++; but i can't work out how to do this this in python?? Here's one that works on multiple character strings, with carrying. Rather silly, really. http://www.brunningonline.net/simon/blog/archives/001787.html -- Cheers, Simon B, [EMAIL PROTECTED], http://www.brunningonline.net/simon/blog/ -- http://mail.python.org/mailman/listinfo/python-list
Re: Incrementing letters
On Fri, 27 May 2005 16:10:32 +0200, Wolfram Kraus [EMAIL PROTECTED] wrote: Duncan Booth wrote: import string upone = string.maketrans( 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ', 'bcdefghijklmnopqrstuvwxyzaBCDEFGHIJKLMNOPQRSTUVWXYZA') string.translate(I've got a string s, upone) J'wf hpu b tusjoh t Note the difference though: the Python code does what you said you wanted, whereas your sample code corrupts punctuation. Wow, that's quite nice. You really learn something new every day :-) A minor improvement: Use string.ascii_letters as the first parameter for string.maketrans And use string.ascii_letters[ 1 : ] + string.ascii_letters[ 0 ] for the second parameter to string.maketrans. Regards, Dan -- Dan Sommers http://www.tombstonezero.net/dan/ -- http://mail.python.org/mailman/listinfo/python-list
Re: Incrementing letters
Dan Sommers wrote: Wolfram Kraus [EMAIL PROTECTED] wrote: Duncan Booth wrote: import string upone = string.maketrans( 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ', 'bcdefghijklmnopqrstuvwxyzaBCDEFGHIJKLMNOPQRSTUVWXYZA') string.translate(I've got a string s, upone) J'wf hpu b tusjoh t Note the difference though: the Python code does what you said you wanted, whereas your sample code corrupts punctuation. Wow, that's quite nice. You really learn something new every day :-) A minor improvement: Use string.ascii_letters as the first parameter for string.maketrans Yes, my first attempt at responding did that, but I changed it because that makes the assumption that string.ascii_letters is in a specific order (did you know that lowercase came first and uppercase second without checking?) And use string.ascii_letters[ 1 : ] + string.ascii_letters[ 0 ] for the second parameter to string.maketrans. Bzzt. Wrong answer. Look closely at the middle of the string. I did have: upone = string.maketrans(string.ascii_letters, 'z'+string.ascii_lowercase[:-1] + 'Z' + string.ascii_uppercase[:-1]) but as I said, that makes too many assumptions for my liking about the contents of those variables. -- http://mail.python.org/mailman/listinfo/python-list
Re: Incrementing letters
Dan Sommers wrote: On Fri, 27 May 2005 16:10:32 +0200, Wolfram Kraus [EMAIL PROTECTED] wrote: Duncan Booth wrote: import string upone = string.maketrans( 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ', 'bcdefghijklmnopqrstuvwxyzaBCDEFGHIJKLMNOPQRSTUVWXYZA') string.translate(I've got a string s, upone) Wow, that's quite nice. You really learn something new every day :-) A minor improvement: Use string.ascii_letters as the first parameter for string.maketrans And use string.ascii_letters[ 1 : ] + string.ascii_letters[ 0 ] for the second parameter to string.maketrans. Not quite: string.ascii_letters[ 1 : ] + string.ascii_letters[ 0 ] 'bcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZa' i.e. you get 'z' - 'A' and 'Z' - 'a' Another issue is locale settings and special characters - what should be done with accented letters? Preserve letter, or shift and loose accent? -- http://mail.python.org/mailman/listinfo/python-list
