我必須.format使用python. 我正在使用以下代碼,但它不能按預期工作。alarm_tables = ["treevashialarm","treekhopolialarm","treetalegaonalarm"]alarm_types = ['As%%','Sd%%','Multi%%']這是我的查詢:query_types = "SELECT \"alarmSeverity\", COUNT(*) FROM " + "'{0}'" + " WHERE isparent = true and eventdate+eventtime BETWEEN TIMESTAMP " + "'{1}" + "T18:30:00.000Z' " + " and TIMESTAMP " + "'{2}" + "T18:29:59.999Z' " + "and eventtype like '{3}' group by \"alarmSeverity\""我正在使用如下格式選項:for i in alarm_tables: for j in alarm_types: query_types.format(i,'2019-10-01','2019-10-02',j) print(query_types)我得到如下輸出:SELECT "alarmSeverity", COUNT(*) FROM '{0}' WHERE isparent = true and eventdate+eventtime BETWEEN TIMESTAMP '{1}T18:30:00.000Z' and TIMESTAMP '{2}T18:29:59.999Z' and eventtype like '{3}' group by "alarmSeverity"我的預期輸出之一如下:SELECT "alarmSeverity", COUNT(*) FROM treevashialarm WHERE isparent = true and eventdate+eventtime BETWEEN TIMESTAMP '2019-10-09T18:30:00.000Z' AND TIMESTAMP '2019-10-10T18:29:59.999Z' and eventtype like 'As%' group by "alarmSeverity";我怎樣才能得到想要的。output為什么format不工作。是否有解決方法。也不工作。它在隨機時間for loop給出。random output任何幫助表示贊賞!
1 回答

烙印99
TA貢獻1829條經驗 獲得超13個贊
format()
不修改原始字符串:
所以如果你想這樣做,你必須寫:
query_types_formated = query_types.format(i,'2019-10-01','2019-10-02',j)
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