def solve_expression(tokens):
FixTokens(tokens)
general_sum = 0
curr_variable = 0
curr_token_index = 0
while curr_token_index < (len(tokens) - 1):
current_token = tokens[curr_token_index]
next_token = tokens[curr_token_index + 1]
if next_token == "(":
if is_number(current_token):
raise UnapplicableOperator(current_token, curr_token_index)
closing_bracket_ind = get_enclosing_bracket_ind(
tokens[curr_token_index:], curr_token_index)
if (closing_bracket_ind != False):
value_in_brackets = solve_expression(
tokens[curr_token_index + 2:closing_bracket_ind])
next_token = value_in_brackets
curr_token_index = closing_bracket_ind
else:
raise LackOfBrackets(curr_token_index)
general_sum, curr_variable = perform_current_operation(
current_token, next_token, general_sum, curr_variable,
curr_token_index)
curr_token_index += 1
general_sum += curr_variable
return float(general_sum)
def test4(self):
s = "(33(11)22)"
opening_ind = 15
expected = 24
self.assertEqual(expected, get_enclosing_bracket_ind(s, opening_ind))
def test1(self):
s = "( )"
opening_ind = 15
expected = 17
self.assertEqual(expected, get_enclosing_bracket_ind(s, opening_ind))
def test2(self):
s = "("
opening_ind = 15
expected = False
self.assertEqual(expected, get_enclosing_bracket_ind(s, opening_ind))