遍历字符串的一部分

[3339:1.6101369,1062:1.5,5751:1.5,6376:1.5,  ...  ]

d = ast.literal_eval('{' + s[1:-1] + '}')

s = "[3339:1.6101369,1062:1.5,5751:1.5,6376:1.5]"
s = s.strip("[]")    # Drop the brackets
for kv in s.split(","):
    key, value = kv.split(":")
    print key, value

d = dict(kv.split(":") for kv in s.split(","))

for key in d:
    print key, d[key]