python merge list of dictionaries code example

Example 1: merge a list of dictionaries python

>>> from collections import ChainMap
>>> a = [{'a':1},{'b':2},{'c':1},{'d':2}]
>>> dict(ChainMap(*a))
{'b': 2, 'c': 1, 'a': 1, 'd': 2}

Example 2: convert two lists to a single dictionary python

#initialize lists

key_list = ['red', 'green', 'blue']
value_list = [1, 2, 3]

#convert lists

my_dict = {} 
for key in key_list: 
    for value in value_list: 
        my_dict[key] = value 
        value_list.remove(value) 
        break  
print(my_dict)

Example 3: merged all dictionaries in a list python

>>> result = {}
>>> for d in L:
...    result.update(d)
... 
>>> result
{'a':1,'c':1,'b':2,'d':2}