How to quickly find more dictionaries public key (Key) -?
actual case:
Spanish Football League, scoring each round player statistics:
Round 1: { 'Suarez': 1, 'Massey': 2 'Benzema': 1, ...}
Round 2: { 'Suarez': 1, 'Lo C': 2 'Juggernaut': 1, ...}
Round 3: { 'Suarez': 1, 'Carl': 2 'Bailey': 1, ...}
...
Statistics of the N front wheel, every game player to score.
--N a dictionary, looking for problems common bond -
Relatively easy to think of ways:
our way:
solution:
Use the set (set) intersection operation --- get all dict public key
Step1:
Use dictionary keys () method, to obtain a set of keys dictionaries
- For two dictionaries are calling keys, you can get two sets, two sets to do with the intersection of operation, the result of the intersection, is the public key
Step2:
For more dictionaries:
Use Map function to obtain a set of keys for each dictionary
Step3:
Reduce the use of the intersection of function, take all dictionary keys collection
