[Zopyrus]

Hello to all of you wazzzzzzaaaaaaa

I need some help on python programming, would appreciate it alot!

I've made two *.py files, one that is called labb2funktioner.py only has two functions where I define what is VOCALES (a, e, i,o,u, y etc etc..) and the other function in that same file is for consonants.

Now the thing is I'm gonna create a python file called VISKNING.py and in that file I want it to ask the user to Write something:
when he does, the program will re-write his text but delete the vocales. Like this:

Får jag viska ditt namn?
Fr jg vsk dtt nmn?
Visst får du det
Vsst fr d dt

The thing is I don't know how to code it so that the program DELETES the vocales.. the rest is all good though. I need some help on how to make hte program pick out all the vocales in the text and then delete them.

Thanks in advance,
Micheal

[Zoso]

There is a trivial solution for this problem. First, you should define two lists (instead of two functions) as global variables for the vowels and the consonants like this :

vowels = [ 'a', 'A', 'e', 'E', 'i', 'I', ... ]
consonants = [ 'b', 'B', 'c', 'C', ... ]

Then, the function that deletes the vowels from an input stream should look like this :

def DeleteVowels( input_stream ) :
    new_stream = ""     # This will hold the result
    for char in input_stream :
        if char in consonants :
            new_stream += char
    return new_stream

Note that this solution is certainly not optimal (you'd better find an implementation that uses functions from the string module or C functions) but if performance isn't a matter for you, this should work well enough.

[netytan]

This should give you the results your after, it works a little differently than Zoso's example. Primarily the removeVowels() function appends to a list rather than using string concatenation, to improve performance when working with large strings.

>>> vowels = 'aeiouy'
>>> def removeVowels(originalString):
	output = []
	for letter in originalString:
		if letter.lower() not in vowels:
			output.append(letter)
	return ''.join(output)

>>> removeVowels('Help me out please!')
'Hlp m t pls!'
>>>
>>>
>>>
>>>
>>> def replaceVowels(theString):
	for letter in vowels:
		theString = theString.replace(letter, '')
	return theString

>>> replaceVowels('Help me out please!')
'Hlp m t pls!'
>>> 
>>> theString = 'Help me out please!'
>>> 
>>> [l for l in theString if l not in vowels]
['H', 'l', 'p', ' ', 'm', ' ', 't', ' ', 'p', 'l', 's', '!']
>>> ''.join([l for l in theString if l not in vowels])
'Hlp m t pls!'
>>>

All these examples will give you the same results but work slightly differently . For preformance though I would go with the first function.

Hope this helps,

Mark.

[sfb]

import sys
from labb2funktioner import isVowel

text = raw_input("Please type something: ")
for character in text:
    if not isVowel(character):
        sys.stdout.write(character)

You don't need both isVowel and isConsonant...
I do "not isVowel" so it prints out other characters like spaces and returns. If you just did "if isConsonant(character)" it would miss spaces and so on.)

Or

>>> filter(lambda c: not (c in 'aeiouAEIOU'), "Hello World")
'Hll Wrld'

Or

>>> import re
>>> re.sub("[aeiouAEIOU]", "", "Hello World")
'Hll Wrld'
>>>

:P

[Zopyrus]

Thanks for the help!! Really appreciated!

However since this is a test I have to do it in a specific way, like this: this is the code in my labb2funktioner.py
-------
#coding: iso-8859-1

from string import *

def vokal(bokstav):
bokstav=lower(bokstav)
lista="aeiouåäö"
leta = lista.find(bokstav)
if leta >=0:
return True
else:
return False

def konsonant(bokstav):
bokstav=lower(bokstav)
lista="zxcvbnmsdfghjklqwrtp"
leta = lista.find(bokstav)
if leta >=0:
return True
else:
return False
-------

now in my viskning.py i've come so far:

-----
#coding: iso-8859-1

from labb2funktioner import *

bokstav = raw_input("Mata in text: \n")
if vokal(bokstav):
for i in range(bokstav):
print i
-------

But I don't know how to pick out the vocales and delete them??

Thanks,