Python基于键的求和值

具体解决方案，不尝试巧妙：

def regroup(values):    groups = dict()    for d in values:        key = (d["prod_name"], d["prod_hola"])        if key in groups: group = groups[key] group["rashod"] += d["rashod"] group["prihod"] += d["prihod"]        else: groups[key] = d.copy()    return list(groups.values())

还有一个更通用的解决方案：

def generic_regroup(values, keys):    groups = dict()    valkeys = [k for k in values[0] if k not in key]    for d in values:        key = tuple(d[k] for k in keys)        if key in groups: group = groups[key] for k in valkeys:     group[k] += d[k]        else: groups[key] = d.copy()    return list(groups.values())results = generic_regroup(values, ("prod_name", "prod_hola"))

现在肯定有人会采用涉及itertools的更聪明的解决方案…