Recursion depth with RegEx when a few more params than 2

[Titoflegit]

File "utils.py", line 140, in get_request_query_params
File "utils.py", line 114, in get_request_query_string
RuntimeError: maximum recursion depth exceeded

I have 15 params.

What works for me is:

def get_request_query_string(request):
    """ return http request query string """
    lines = request.split("\r\n")
    print(lines[0])
    query_str=lines[0].split(' ')
    print(query_str[1])
    if '&' in query_str[1]:
        return query_str[1][2:] #to skip /&
    else:
        return ""

And there is the same problem with POST, but in this case we do not have even the full request and the POST data is trimmed. Do not know how to solve this