def get_elements(self, json_string, expr):
load_input_json = self.string_to_json(json_string)<EOL>jsonpath_expr = parse(expr)<EOL>value_list = []<EOL>for match in jsonpath_expr.find(load_input_json):<EOL><INDENT>value_list.append(match.value)<EOL><DEDENT>if not value_list:<EOL><INDENT>return None<EOL><DEDENT>else:<EOL><INDENT>return value_list<EOL><DEDENT>
Get list of elements from _json_string_, matching [http://goessner.net/articles/JsonPath/|JSONPath] expression.

*Args:*\n
_json_string_ - JSON string;\n
_expr_ - JSONPath expression;

*Returns:*\n
List of found elements or ``None`` if no elements were found

*Example:*\n
| *Settings* | *Value* |
| Library    | JsonValidator |
| Library    | OperatingSystem |
| *Test Cases* | *Action* | *Argument* | *Argument* |
| Get json elements | ${json_example}=   | OperatingSystem.Get File |   ${CURDIR}${/}json_example.json |
|                   |  ${json_elements}= | Get elements  |  ${json_example}  |  $.store.book[*].author |
=>\n
| [u'Nigel Rees', u'Evelyn Waugh', u'Herman Melville', u'J. R. R. Tolkien']