check if two keys in a dictionary have equal values

Question

hello, I have a dictionary {'A': ['B', 'C'], 'B': ['A', 'C'], 'C': ['A', 'B']}, I would like to know if there is any way to check if for example the key 'A' and the key 'C' have equal elements and what they are.

Thank you

Answer 1

d1 = {'A': ['B', 'C'], 'B': ['A', 'C'], 'C': ['A', 'B'], 'D': ['B', 'C']}

To test total equality

d1['A']==d1['D']
True

d1['A']==d1['B']
False

Or specifically for your question, looking for elements of A who are in C.

equals = []

for e in d1['A']:
    if e in d1['C']:
        equals.append(e)

print (equals)
['B']

Or more pythonically in just one line with list comprehension

equals = [equal for equal in d1['A'] if equal in d1['C']]
print (equals)
['B']