我有這個巨大的文本文件，我想在分鐘的頂部獲取具有關聯數據的行。這是來自該文本文件的幾行。這是超過 36 小時的數據片段。我所說的關聯是指時間戳后面的 8 個數據點。2020-08-03 22:17:12,0,0,4803,4800,91,28.05,24.05,58.89172020-08-03 22:17:13,0,0,4802,4800,91,28.05,24.05,58.89252020-08-03 22:17:14,0,0,4805,4800,91,28.05,24.05,58.93412020-08-03 22:17:15,0,0,4802,4800,91,28.05,24.05,58.96832020-08-03 22:17:18,0,0,4802,4800,91,28.05,23.05,58.978...我找不到一種方法讓 python 查看時間戳的秒部分，然后創建一個僅包含與“:00”秒相關聯的數據的新列表。for line in fh:    line = line.rstrip("\n")    line = line.split(",")    masterlist.extend(line) #this is putting the information into one list    altmasterlist.append(line) #this is putting the lines of information into a listfor line in altmasterlist:    if ":00" in line:        finalmasterlist.extend(line) #Nothing is entering this if statementprint(finalmasterlist)我什至在這兩個 for 循環的正確區域嗎？