Get first N key:value pairs of a dictionary in Python

Hello programmers, in this tutorial, we will learn how to get first N key:value pairs of a dictionary in Python.

we have a dictionary with keys and values

d={‘a’:1,’b’:2,’c’:3,’d’:4,’e’:5}

We want to get the first three keys and values from this dictionary: {‘a’:1,’b’:2,’c’:3}.

coding

• First, we create a dictionary, and then we will get their items using the items() method, which will return the key-value pair in the list.
• Then using the same items() method, we will extract the first N items of the list and convert these key-values pairs we will convert them into dictionaries using the dict() method.

#dictionary
d={'a':1,'b':2,'c':3,'d':4,'e':5}
# printing original dictionary 
print("The original dictionary : ",d) 
#items() method
print("iteams: ",d.items()) 
# first N keys-values 
N = 3

# Get first N keys-items in dictionary 
d1= dict(list(d.items())[0: N]) 

# printing result 
print("Dictionary of first keys and values : ",d1)

output:

The original dictionary :  {'a': 1, 'b': 2, 'c': 3, 'd': 4, 'e': 5}
iteams:  dict_items([('a', 1), ('b', 2), ('c', 3), ('d', 4), ('e', 5)])
Dictionary of first keys and values :  {'a': 1, 'b': 2, 'c': 3}

 

Hopefully, you have learned how to get first N key: value pairs of a dictionary in Python.

Also, read: Python dictionary setdefault() method