Find a matching value in a dictionary from values found in a list you can choose to match on the key or the value with the conditional test :: Python3.9

Find Matching List Value in a dictionary.py

# COMBINING DICTIONARY AND LIST COMPREHENSION

# python 3.9, 
# Find a matching value in a dictionary from values found in a list. 
# you can choose to match on the key or the value with the conditional test 
#   depending the type of dictionary

a_list = [1, 2, 3]
b_dict = {1: "Bill", 2: "Joe", 3: "Oscar", 4: "Paul", 5: "Sally"}
new_dict = dict((key, value) for key, value in b_dict.items() if key in a_list)

print(new_dict)

# RESULT: {1: 'Bill', 2: 'Joe', 3: 'Oscar'}