Python / Simple string strippers.

from string import punctuation
from string import digits
from string import letters
from string import printable
from string import whitespace

def punk_stripper(inputtext):
    a = ''.join([t for t in inputtext if t not in punctuation])
    return a

def get_numbers(inputtext):
    b = ''.join([t for t in inputtext if t in digits])
    return b

def get_letters(inputtext):
    c = ''.join([t for t in inputtext if t in letters])
    return c

def get_printable(inputtext):
    d = ''.join([t for t in inputtext if t in printable])
    return d

def whitespace_stripper(inputtext):
    e = ''.join([t for t in inputtext if t not in whitespace])
    return e

inputtext = str(raw_input('Input some text for the strippers >'))
print "\n\n"
print "punk_stripper:-\t",punk_stripper(inputtext)
print "get_numbers:-\t",get_numbers(inputtext)
print "get_letters:-\t",get_letters(inputtext)
print "get_printable:-\t",get_printable(inputtext)
print "whitespace_stripper:-\t",punk_stripper(inputtext)