python - Searching for item in two dictionaries and returning result based on the match -

co_1 = {'a1': [(1, 1)], 'b1': [(0, 4), (0, 0), (4, 0)]} co_2 = {'a2': [(2, 2)], 'b2': [(1, 5), (1, 2), (5, 1)]}  position = (x, y) 

how check if position(e.g. (1, 5)) present in values of 2 dictionaries 'co_1 , co_2'.

so far have:

for key, value in co_1.items():     if position in value:         return (statement1) key, value in co_1.items():     if position in value:         return(statement2) #if position not in either value --> return none 

is there way clean can search position in both dictionaries , have if-else statement: if position present in values (co_1 or co_2) return (statement) else return none.

such as:

for key, value in co_1.items() , co_2.items():     if position in value in co_1.items():         return statement1     elif position in value in co_2.items():         return statement2     else:         return none #example if position = (2, 2) --> return statement2 #exmaple if position = (3, 1) --> return none 

it seems keys not relevant here – build set of tuples both dictionaries.

co_1_set = {y x in co_1 y in co_1[x] }  co_2_set = {y x in co_2 y in co_2[x] }  

now, membership test simple if-elif statement:

def foo(position):     if position in co_1_set:         return statement1      elif position in co_2_set:         return statement2 

you'll want perform set constructions little possible - ideally when dictionary contents change.

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if both dictionaries contain position, code returns statement1 only. if want different, you'll need make changes appropriate.