from operator import itemgetter
dates = map(itemgetter(1), E.itervalues())
根据您的评论,它可以是这样的:
from datetime import datetime
def get_dates(filename, A, B):
with open(filename) as f:
dates = [datetime.strptime(row.split()[2], format) for row in f.readlines()]
dates = [dt for dt in dates if dt.year == A and dt.month == B]
return [(dt, dates.count(dt)) for dt in set(dates)]
用途:
或:
或:
根据您的评论,它可以是这样的:
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