python initialize dictionary with lists
dict_ = {key:[] for key in keys}
python initialize dictionary with lists
dict_ = {key:[] for key in keys}
initialize a dict from list
dict.fromkeys(["key1", "key2", "key3"], "value")
{'key1': 'value', 'key2': 'value', 'key3': 'value'}
python initialize dict with empty list values
from collections import defaultdict
data = defaultdict(list)
data[1].append('hello')
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