import re
p = re.compile(r'^\t(.*)\t.*: (.*)$')
test_str = " Location Next Available Appointment: Date\n"
print [item for sublist in re.findall(p, test_str) for item in sublist]
aW1wb3J0IHJlCnAgPSByZS5jb21waWxlKHInXlx0KC4qKVx0Lio6ICguKikkJykKdGVzdF9zdHIgPSAiCUxvY2F0aW9uCU5leHQgQXZhaWxhYmxlIEFwcG9pbnRtZW50OiBEYXRlXG4iCnByaW50IFtpdGVtIGZvciBzdWJsaXN0IGluIHJlLmZpbmRhbGwocCwgdGVzdF9zdHIpIGZvciBpdGVtIGluIHN1Ymxpc3Rd