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regular expression:
  https://www.tutorialspoint.com/python/python_reg_expressions.htm
  
  
import re
print re.sub('[\s ]+', '', s)
s = s.strip(' \t\n\r')

entries = re.split("\n+", text)

m = re.match("(d\w+)\W(d\w+)", element)


def test1():
    text = '"-Abc"'
    ret = re.match(r"^\"[^\"]+\"$", text)
    print ret
    entry = text

    #rule 2
    entry = re.sub('^[-\"\']+', '', entry)
    entry = re.sub('[-\"\']+$', '', entry)
    entry = entry.lower()
    print entry