as it creates a list of references to the same empty dictionary, so that if you update one dictionary in the list, all the other references get updated too. Try these updates to see the difference: dictlistGOOD[0]["key"] = "value" dictlistFAIL[0]["key"] = "value"

Mar 9, 2016 · You can have a list that contains dictionaries. But you can't have a dictionary , that just contains lists. You need key:value pairs in a dictionary. Also your input is strictly a list of strings. So look up using split to turn that into a list of lists first. –

Apr 9, 2022 · This syntax was introduced in Python 3 and backported as far as Python 2.7, so you should be able to use it regardless of which version of Python you have installed. A canonical example is taking two lists and creating a dictionary where the item at each position in the first list becomes a key and the item at the corresponding position in the ...

Dec 26, 2010 · Python: create a list of dictionaries using a list comprehension. Ask Question Asked 14 years, 5 months ago.

Feb 28, 2012 · In Python versions older than 2.7, you can use my_dict = dict((d["slug"], d) for d in a) This will implicitly remove duplicates (specifically by using the last item with a given key).

Feb 18, 2016 · I have a list of dictionaries, looking some thing like this: list = [{'id': 123, 'data': 'qwerty', 'indices': [1,10]}, {'id': 345, 'data': 'mnbvc', 'indices': [2,11]}] and so on. There may be more documents in the list. I need to convert these to one JSON document, that can be returned via bottle, and I cannot understand how to do this. Please ...

I want to create a dictionary whose values are lists. For example: { 1: ['1'], 2: ['1','2'], 3: ['2'] } If I do: d = dict() a = ['1', '2'] for i in a: for j in range ...

If you are working with more than 1 set of values and wish to have a list of dicts you can use this: def as_dict_list(data: list, columns: list): return [dict((zip(columns, row))) for row in data] Real-life example would be a list of tuples from a db query paired to a tuple of columns from the same query. Other answers only provided for 1 to 1.

Apr 23, 2015 · If you want to get a list of dictionaries including the index values, you can do something like, df.to_dict('index') Which outputs a dictionary of dictionaries where keys of the parent dictionary are index values. In this particular case,

Mar 25, 2012 · And, if you're so far back in time that Python doesn't exist, you can use Dartmouth BASIC to DIM an array so that you can simulate a hash table by writing your own hash function. And, if you're working on a system without a higher level language, you can hand translate your assembler code into machine language and input your program with toggle ...