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from typing import Dict, List, Tuple | |
def makeKeyDict(items:List[Tuple]) -> Dict: | |
"Gives a list of tuples (a,b), returns a dict mapping a to set of b" | |
d = {} | |
for (a,b) in items: | |
d[a] = set([b]).union(d.get(a,set())) | |
return d | |
def findKeysWithMultipleValues(keydict) -> List: | |
ks = [] | |
for (k,v) in keydict.items(): | |
if len(v) > 1: | |
ks.append(k) | |
return ks | |
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