How to Merge Dictionaries in Python

For example, you want to merge dictionaries x and y. There are different ways to merge them. Check them out !

1. Python 2, or lower than Python 3.4 you can use a custom function as provided below :

def merge_dicts(x, y):
    z = x.copy()   
    z.update(y)    
    return z

then, called it by :

z = merge_dicts(x, y)

2. For Python 3.5 or greater user :

z = {**x, **y}

3. For Python 3.9.0 or greater :

z = x | y