17、字典同键，值合并

lst = [{'a': 123}, {'a': 456},{'b': 789}]
l = {1504: '(5930+ 100 * 14) * 0.8)', 2032: '(300+ 100 * 1) * 0.8)'}
t = {1504: '(5564+ 100 * 14) * 0.2)',190333: '(740+ 100 * 2) * 0.2)', 190288: '(10367+ 100 * 21) * 0.2)', 1325: '(300+ 100 * 1) * 0.2)', 190290: '(3580+ 100 * 7) * 0.2)'}
a = []
a.append(l)
a.append(t)
dic = {}
for _ in a:
    for k, v in _.items():
        dic.setdefault(k, []).append(v)
print(dic)