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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def getParams(options=None):
 """return a string containing script parameters. Parameters are all variables that start with ``param_``. """

    result = []
    if options:
        members = options.__dict__
        for k, v in sorted(members.items()):
            result.append("# %-40s: %s" % (k, str(v)))
    else:
        vars = inspect.currentframe().f_back.f_locals
        for var in filter(lambda x: re.match("param_", x), vars.keys()):
            result.append("# %-40s: %s" %
                          (var, str(vars[var])))

    if result:
        return "\n".join(result)
    else:
        return "# no parameters."