import re
matches = []
text = "Hi, How ARE You?"
for line in text.splitlines():
matches.extend([x for x in re.findall(r'\w+', line) if x[0].isupper() and not x.isupper()])
print(matches)
# => ['Hi', 'How', 'You']
aW1wb3J0IHJlCm1hdGNoZXMgPSBbXQp0ZXh0ID0gIkhpLCBIb3cgQVJFIFlvdT8iCmZvciBsaW5lIGluIHRleHQuc3BsaXRsaW5lcygpOgogICAgbWF0Y2hlcy5leHRlbmQoW3ggZm9yIHggaW4gcmUuZmluZGFsbChyJ1x3KycsIGxpbmUpIGlmIHhbMF0uaXN1cHBlcigpIGFuZCBub3QgeC5pc3VwcGVyKCldKQpwcmludChtYXRjaGVzKQojID0+IFsnSGknLCAnSG93JywgJ1lvdSddCg==