Concept: Iterating over dictionaries

Iterating over a dictionary can be done using a for .. in loop. By default, the loop will iterate over the keys of the dictionary. However, you can also iterate over the values or key-value pairs using the values() and items() methods, respectively.

Iterating over keys

config = {
    "hostname": "srv01.example.com",
    "ip_address": "192.168.1.10",
    "services": ["ssh", "http", "ssh"]
}

for key in config:
    print(key, end=" ") # Output: hostname ip_address services

Iterating over values

config = {
    "hostname": "srv01.example.com",
    "ip_address": "192.168.1.10",
    "services": ["ssh", "http", "ssh"]
}

for value in config.values():
    print(value, end=" ") # Output: srv01.example.com 192.168.1.10 ['ssh', 'http', 'ssh']

Iterating over key-value pairs

config = {
    "hostname": "srv01.example.com",
    "ip_address": "192.168.1.10",
    "services": ["ssh", "http", "ssh"]
}

for key, value in config.items():
    print(f"{key}: {value}", end=" ") # Output: hostname: srv01.example.com ip_address: 192.168.1.10 services: ['ssh', 'http', 'ssh']