How to update elements in a dictionary in Python?-CodePudding

I have a list of dictionary in which there are other lists of object

{'Kitchen_Activity': [date= 2009-10-16, start time= 08:45:38, end time= 08:58:52, duration= 0 days 00:13:14 ]}
{'Chores': [date= 2009-10-16, start time= 08:59:02, end time= 09:14:47, duration= 0 days 00:15:45 ]}
{'Kitchen_Activity': [date= 2009-10-16, start time= 09:14:40, end time= 09:14:54, duration= 0 days 00:00:14 ]}
{'Chores': [date= 2009-10-16, start time= 09:30:40, end time= 09:58:54, duration= 0 days 00:28:14 ]}
{'Kitchen_Activity': [date= 2009-10-16, start time= 10:14:40, end time= 10:14:54, duration= 0 days 00:00:14 ]}
{'Shower': [date= 2009-10-16, start time= 11:14:40, end time= 11:40:40, duration= 0 days 00:26:00 ]}

and I want to achive this kind of list:

{'Kitchen_Activity': [date= 2009-10-16, start time= 08:45:38, end time= 08:58:52, duration= 0 days 00:13:14 ], [date= 2009-10-16, start time= 09:14:40, end time= 09:14:54, duration= 0 days 00:00:14 ], [date= 2009-10-16, start time= 10:14:40, end time= 10:14:54, duration= 0 days 00:00:14 ]}
{'Chores': [date= 2009-10-16, start time= 08:59:02, end time= 09:14:47, duration= 0 days 00:15:45 ], [date= 2009-10-16, start time= 09:30:40, end time= 09:58:54, duration= 0 days 00:28:14 ]}
{'Shower': [date= 2009-10-16, start time= 11:14:40, end time= 11:40:40, duration= 0 days 00:26:00 ]}

What I've tried doing is this

def generateActivity(self, date, name, ts, te, dur):
        activities = {}
        activity = Activity().generateInstance(date, name, ts, te, dur)

        if activity.name not in activities.keys():
            activities[activity.name] = []
            activities[activity.name].append(activity)
        else:
            for key, item in activities.items():
                if key == activity.name:
                    item.append(activity)
        return activities

The list I put up there is the output of this function that I call in the main class. What's wrong with what I'm doing?

CodePudding user response：

The list which you want to recieve follows the order, which isn't allowed for key values in a dictionary

{
    a:[],[]
    b:[],[]
}

Instead you should try for

{
    a:[[],[]]
    b:[[],[]]
}

CodePudding user response：

I take your list of dictionary as dicts

If you want the above result, you make a dictionary value string (used json.dumps())

import json
update_dict = {}
for dict in dicts:
    current_key = list(dict.keys())[0]
    if not current_key in update_dict:
        update_dict[current_key] = json.dumps(dict[current_key])
    else:
        update_dict[current_key] = update_dict[current_key]  ", " json.dumps(dict[current_key])

Otherwise you get the value list of list value.

update_dict = {}
for dict in dicts:
    current_key = list(dict.keys())[0]
    if not current_key in update_dict:
       update_dict.update({current_key:[]})
       update_dict[current_key].append(dict[current_key])
    else:
        update_dict[current_key].append(dict[current_key])