Linked Questions
371 questions linked to/from How do I merge two dictionaries in a single expression in Python?
369
votes
5
answers
641k
views
How to concatenate two dictionaries to create a new one? [duplicate]
Say I have three dicts
d1={1:2,3:4}
d2={5:6,7:9}
d3={10:8,13:22}
How do I create a new d4 that combines these three dictionaries? i.e.:
d4={1:2,3:4,5:6,7:9,10:8,13:22}
- 3,783
234
votes
4
answers
154k
views
Union of dict objects in Python [duplicate]
How do you calculate the union of two dict objects in Python, where a (key, value) pair is present in the result iff key is in either dict (unless there are duplicates)?
For example, the union of {'a'...
- 30.3k
50
votes
4
answers
114k
views
TypeError: unsupported operand type(s) for +: 'dict_items' and 'dict_items' [duplicate]
I try to sum two dictionaries like that:
my_new_dict = dict(my_existing_dict.items() + my_new_dict.items())
but recieve error
TypeError: unsupported operand type(s) for +: 'dict_items' and '...
- 1,322
51
votes
2
answers
7k
views
How to merge multiple json objects into a single json object using python [duplicate]
I have a list which contains multiple JSON objects and I would like to combine those JSON objects into a single json object, I tried using jsonmerge but with no luck.
My list is:
t = [{'ComSMS': '...
user5189062
19
votes
3
answers
11k
views
Combine two dictionaries with preference to one of them - [duplicate]
I have two dictionaries
One:
default = {"val1": 10, "val2": 20, "val3": 30, "val4": 40}
Two:
parsed = {"val1": 60, "val2": 50}
Now, I want ...
- 675
20
votes
5
answers
4k
views
Merging of two dictionaries [duplicate]
I have two dictionaries as follows:
D1={'a':1,'b':2,'c':3}
and
D2={'b':2,'c':3,'d':1}
I want to merge these two dictionaries and the result should be as follows:
D3={'a':1,'b':2,'c':3,'b':2,'c':...
- 3,318
30
votes
3
answers
6k
views
How to construct a dictionary from two dictionaries in python? [duplicate]
Let's say I have a dictionary:
x = {"x1":1,"x2":2,"x3":3}
and I have another dictionary:
y = {"y1":1,"y2":2,"y3":3}
Is there any neat way to constract a 3rd dictionary from the previous two:
z = {...
- 1,330
28
votes
1
answer
4k
views
Union of dictionaries python [duplicate]
I have two dictionaries that I want the union of so that each value from the first dictionary is kept and all the key:value pairs from the second dictionary is added to the new dictionary, without ...
- 1,323
16
votes
3
answers
779
views
How do I get union keys of `a` and `b` dictionary and 'a' values? [duplicate]
I was doing django project about processing request.data and from.cleaned_data issues. When user only inputs specify fields, it will send request to my server. Next, the form class process the request,...
- 2,955
7
votes
3
answers
1k
views
How can I concatenate dicts (values to values of the same key and new key)? [duplicate]
I have a problem with concatenating dictionaries. Have so much code so I show in example what my problem is.
d1 = {'the':3, 'fine':4, 'word':2}
+
d2 = {'the':2, 'fine':4, 'word':1, 'knight':1, '...
- 301
20
votes
1
answer
2k
views
python: merging dictionaries by identical value of key [duplicate]
I am new to python and have looked at other answers on merging dictionaries but was still a bit confused.
I am looking to merge together two dictionaries in python by a common value within a specific ...
- 671
2
votes
2
answers
4k
views
Merge a dict in Python using 1 dict as base [duplicate]
I am looking for feedback on my Python code. I am trying to merge two dictionaries. One of the dictionaries controls the structure and the default values, the second dictionary will overwrite the ...
- 303
2
votes
1
answer
4k
views
Python CodeLab dictionary-traversal [duplicate]
The question is
This is what I have so far:
dict(nafta_capitals) = canadian_capitals, mexican_capitals, us_capitals
Given three dictionaries, associated with the variables , canadian_capitals, ...
1
vote
0
answers
2k
views
Python: update a nested dictionary [duplicate]
Let's say I am given a nested dicionary my_dict and another nested dict update: a sequence of keys (valid in my_dict) with a value to be assigned to the leaf at this sequence. For example,
my_dict = {
...
- 355
2
votes
2
answers
604
views
Adding a Key-Value pair in a list in an empty dictionary if the keys are the same [duplicate]
How can I print a dictionary as a union of given dictionaries & appending the values if the keys are equal?
Input:
dict_1 = {
"x":[1,"hello"],
"y":[2,"...
