python 字典关键字排序

operator.itemgetter

rows = [ {'fname': 'Brian', 'lname': 'Jones', 'uid': 1003}, {'fname': 'David', 'lname': 'Beazley', 'uid': 1002}, {'fname': 'John', 'lname': 'Cleese', 'uid': 1001}, {'fname': 'Big', 'lname': 'Jones', 'uid': 1004} ]

from operator import itemgetter rows_by_fname = sorted(rows, key=itemgetter('fname')) rows_by_uid = sorted(rows, key=itemgetter('uid')) print(rows_by_fname) print(rows_by_uid)

rows_by_lfname = sorted(rows, key=itemgetter('lname','fname')) print(rows_by_lfname)

min(rows, key=itemgetter('uid')) {'fname': 'John', 'lname': 'Cleese', 'uid': 1001} max(rows, key=itemgetter('uid')) {'fname': 'Big', 'lname': 'Jones', 'uid': 1004}