How to Count the Number of Occurrences within a Python Dictionary

Python Tip: To count the number of occurrences within a Python dictionary, use Counter from the collections module.

Heres an example 👇

from collections import Counter

devices_vendors = {
    'device001': 'Cisco', 
    'device002': 'Juniper', 
    'device003': 'Cisco',
    'device004': 'Arista',
    'device005': 'Cisco'
}

vendor_counts = Counter(devices_vendors.values())

print(vendor_counts) 
# Output: 
# Counter({'Cisco': 3, 'Juniper': 1, 'Arista': 1})