python determine if a key is in a dictionary code example

Example 1: check if dict key exists python

d = {"key1": 10, "key2": 23}

if "key1" in d:
    print("this will execute")

if "nonexistent key" in d:
    print("this will not")

Example 2: check if dict key contains specific key and value

if (key, value) in d.items():
	print("yes")