def test_magnesium_hydroxide(self):
p = Parser()
self.assertEqual(p.parse_molecule(magnesium_hydroxide), {
'Mg': 1,
'O': 2,
'H': 2
})
def test_fremy_salt(self):
p = Parser()
self.assertEqual(p.parse_molecule(fremy_salt), {
'K': 4,
'O': 14,
'N': 2,
'S': 4
})
def test_water(self):
p = Parser()
self.assertEqual(p.parse_molecule(water), {'H': 2, 'O': 1})
from parse import Parser
print('################################################')
print('From a chemical formula, this code outputs atoms')
print('that make up the chemical unit and their numbers')
print('################################################')
print('')
print('Type chemical formula to be parsed:')
formula = input()
p = Parser()
print(p.parse_molecule(formula))