Say I got a random word like WORD, i want to replace each of the letters of the word with _.
How can I do it? Also, say if there is a space between the word like WO RD, I don't want it to replace the space with _.
views:
164answers:
4
+3
A:
word = 'WORD'
word = ''.join(['_' if char != ' ' else char for char in word])
Blue Peppers
2010-07-20 16:57:06
you don't need list comprehension there
SilentGhost
2010-07-20 17:00:41
35k of reputation and I need to comment about using variable names shadowing built-in.
SilentGhost
2010-07-20 17:18:40
say the i want to do the same thing but now i dont want to replace any letter in the word WO RD. ex the letter O. _ O _ _ how is that possible?
babikar
2010-07-20 17:50:12
say under= re.sub(r"[A-Za-z]", "_ ", word) i think i have to add something in that code to say like except O. how?
babikar
2010-07-20 18:04:27
@babikar: I've given a set-based approach; I think this is better if the filtering pattern is evolving.
polygenelubricants
2010-07-20 18:11:42
i dono why but i keep on getting an error for the "," in the first line of the code!
babikar
2010-07-20 18:25:00
@babikar: look at the `set` documentation if you're using older version of Python; you may have to use the deprecated http://docs.python.org/library/sets.html
polygenelubricants
2010-07-20 18:33:41
i mean the first part works:word= 'WO RD' under= re.sub(r"[A-Za-z]", "_ ", word)but the second part gives error: visible = {' ', 'O'} word_O = ''.join(char if char in visible else '_' for char in word)print(word)and i dont think there is anything that has to do with the version, cuz we are not using anything new. i guess
babikar
2010-07-20 18:40:18
@babikar: If I understand it correctly, that means you have to use the deprecated sets module. This snippet http://ideone.com/8E1tT works for 2.6.4.
polygenelubricants
2010-07-20 18:46:27
+2
A:
You could do this with Python's translate() and maketrans() functions. They will take care of mapping letters in one string to other letters.
Karmastan
2010-07-20 16:59:02