[Python] how to extract words following a list of keywords in python using regex?

I am trying to extract locations using Regex in python. Right now I am doing this:

def get_location(s):
s = s.strip(STRIP_CHARS)
keywords = "at|outside|near"
location_pattern = "(?P<location>((?P<place>{keywords}\s[A-Za-z]+)))".format(keywords = keywords)
location_regex = re.compile(location_pattern, re.IGNORECASE | re.MULTILINE | re.UNICODE | re.DOTALL | re.VERBOSE)

for match in location_regex.finditer(s):
match_str = match.group(0)
indices = match.span(0)
print ("Match", match)
match_str = match.group(0)
indices = match.span(0)
print (match_str)

get_location("Im at building 3")


I have three issues:

1. It is only giving "at" as output but it should also give building.
2. captures = match.capturesdict() I am not able to use to extract captures where this is working other examples.
3. When I am doing just this location_pattern = 'at|outside\s\w+. It seems to be working. Can someone explains what I am doing wrong?

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