python remove all non alphabetic characters code example

Example 1: python remove non letters from string

def nospecial(text):
	import re
	text = re.sub("[^a-zA-Z0-9]+", "",text)
	return text

Example 2: remove alphabetic characters python

numeric_answer = filter(str.isdigit, original_string)
numeric_answer = "".join(numeric_answer)

Example 3: python string exclude non alphabetical characters

regex = re.compile('[,\.!?]') #etc.