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Basic python problem
20/8/08 12:42:26 PM

Hey guys doing a bit of python for uni and I'm having a few issues with the code for my assignment.

I'm having a issue with an if statement (sounds dumb I know), it seems to be always going through the if statement even if it does not seem to be valid.

Anyway here is my code

def punctuation_check(word):

for secondary_index in range(len(word)):

if(word[-secondary_index] == "'" or "." or "," or "!" or "?" or ":"
or ";"):
extra_bit = word[-secondary_index:]
word = word[0:-secondary_index]
return word, extra_bit

extra_bit = ''

return word, extra_bit

def change_sex(string):
#Defining all variables.
male = ['OUR_HERO', 'THE_VILLAIN']
split_string = string.split()
sentence = ''
space = ' '

#Main method for parsing each word in the sentence and checking for gender
#to be changed.
for main_index in range(len(split_string)):

split_string[main_index], extra_bit = punctuation_check(

if(split_string[main_index] == male[0]):
sentence = sentence + space + female[0] + extra_bit

elif(split_string[main_index] == male[1]):
sentence = sentence + space + female[1] + extra_bit

elif(split_string[main_index] == female[0]):
sentence = sentence + space + male[0] + extra_bit

elif(split_string[main_index] == female[1]):
sentence = sentence + space + male[1] + extra_bit

else: sentence = sentence + space + split_string[main_index] + extra_bit

#Removes space from start of sentence.
sentence = sentence[1:]

return sentence

But the issue seems to stem from the first function.

Thanks any help you can provide and I understand if any of you have issues with helping with a uni assignment.


20/8/08 1:49:34 PM

I'm not a python programmer, and python may not work this way, but this is the first thing I noticed.

In every other language I've used, you've always had to go:
if (var == "x" or var == "y" or var == ...)
rather than
if (var == "x" or "y" or "z" or ...)

Could that be it?

"Grandfather had an accident, he got burnt." "Oh no, how bad?" "Well, they don't fuck around at the crematorium."

20/8/08 1:52:41 PM

I did have that for a while, when the list was smaller, but in the interpreter i tired the shorter version and it seemed to work and it seems to be a nice way to neaten up my code, but I'll give it a shot again.


EDIT: Yep that works thanks for that.

Edited by schplade: 20/8/2008 1:56:41 PM


20/8/08 2:56:41 PM


"Grandfather had an accident, he got burnt." "Oh no, how bad?" "Well, they don't fuck around at the crematorium."

20/8/08 7:38:26 PM

Yeh, Python behaves the same way as most languages in this case (i.e. in this case checks if word[-secondary_index] == "'" and then logically ORs it with the remainder of the parameters cast to bool).

However you can neaten that code up with python, this is exactly equivalent to what you need:
if word[-secondary_index] in ("'", ".", ",", "!", "?", ":", ";"):

Wystarczy tego medrkowania.

22/8/08 2:25:37 AM

hetman's can be improved by using a string rather than a tuple of strings:

if word[-secondary_index] in "'.,!?:;":

By perseverance the snail reached the ark.

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