def replace(storage, cmd):
#input: dict storage, string cmd
#spec: replaces the value of transaction in day day with type tr_type and description description with value value
day = int(cmd[1])
value = int(cmd[5])
tr_type = cmd[2]
description = cmd[3]
for i in range(len(get_day(storage, day))):
if (get_descr(storage, day, i) == description):
if (get_type(storage, day, i) == tr_type):
set_value(storage, day, i, value)
def test_set_value():
storage = {23: [[100, "out", "pizza"], [1000, "in", "salary"]]}
set_value(storage, 23, 0, 150)
set_value(storage, 23, 1, 1050)
assert get_value(storage, 23, 0) == 150, 'should get 150'
assert get_value(storage, 23, 1) == 1050, 'should get 1050'