[py]使用字典get方法做数据统计

s = "aabbccc"

d = {}

for i in s:
    if i in d:
        d[i] += 1
    else:
        d[i] = 0

for i in s:
    d[i] = d.get(i, 0) + 1
print(d)

# {'a': 2, 'b': 2, 'c': 3}