get Key by value, dict, python

Question

How can I get a key from a value?

my dict:

countries = {
        "Normal UK project" : "1",
        "UK Omnibus project" : "1-Omni",
        "Nordic project" : ["11","12","13","14"],
        "German project" : "21",
        "French project" : "31"
        }

my semi functioning code:

for k, v in countries.items():
    if "1" in v:
        print k

expected output:

Normal UK project

actual output:

French project
UK Omnibus project
German project
Normal UK project

How can I fix my code?

Answer 1

The following code provide another and short version of getting dictionary keys by some value, by using list comprehensions and dic.items():

keys_have_value = [k for k,v in dic.items() if v=="1"]