in social-media/gather-data.py [0:0]
def parse_handle(txt):
import re
re1 = '(@)' # Single '@' character
# any sequence that contains alphanumeric characters or underscore.
re3 = '((?:[a-z0-9_]*))'
rg = re.compile(re1 + re3, re.IGNORECASE)
m = rg.search(txt)
if m:
return m.group(2)