這是我的數據框 date time ticker price495 20200324 100000 LKOH 4484.0496 20200324 100000 LKOH 4481.5500 20200324 100000 LKOH 4482.0623 20200324 100001 LKOH 4482.0679 20200324 100001 LKOH 4482.0... ... ... ... ... 986321 20200324 183954 LKOH 4498.5986336 20200324 183955 LKOH 4497.0986385 20200324 183956 LKOH 4498.5986481 20200324 183958 LKOH 4497.0986482 20200324 183958 LKOH 4497.0我對其應用過濾器:df = df[df['time'] <184000]但我不想過濾帶有代碼“USDRUB”的行的數據所以我需要類似的東西:df = df[if ticker != 'USDRUB' then use filter df['time'] <184000] 怎么寫才能正確呢?
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