Как слить два списка в словарь?

d = {}
for k, v in zip(list1, list2):
    if k in d:
        if not isinstance(d[k], list):
            d[k], t = [], d[k]
            d[k].append(t)
        d[k].append(v)
    else:
        d[k] = v

lst_keys = ['6.95', '6.95', '6.95', '6.95', '6.96', '6.96', '6.96', '6.96', '6.96', '6.96']
lst_vals = ['0/4', '0/10', '0/6', '0/18',  '0/9', '0/24', '0/22', '0/11', '0/14', '0/7']

d = dict()
for key, val in zip(lst_keys, lst_vals):
    d.setdefault(key, []).append(val)

print(d)

for key, val in zip(lst_keys, lst_vals):
    try:
        d[key].append(val)
    except KeyError:
        d[key] = [val]

from collections import defaultdict

d = defaultdict(list)
for key, val in zip(lst_keys, lst_vals):
    d[key].append(val)