Pyarrow：如何在 structType 中转换数据类型？

如何解决Pyarrow：如何在 structType 中转换数据类型？

我有一个镶木地板文件，当我从中读取数据时，我得到以下架构：

pyarrow.Table
schema0: struct<crm: struct<task: struct<ACTIVITY_STATUS: string,CREATED_ON: timestamp[us],TASK_ID: string,esitoInfo: struct<ESITO: string>,timeInfo: struct<ACTUAL_END: null,DATA_SCADENZA_TASK: timestamp[us]>>,ticket: struct<TICKET_ID: string>>,eventType: string,identities: struct<ID_CONTO: string>>
  child 0,crm: struct<task: struct<ACTIVITY_STATUS: string,ticket: struct<TICKET_ID: string>>
      child 0,task: struct<ACTIVITY_STATUS: string,DATA_SCADENZA_TASK: timestamp[us]>>
          child 0,ACTIVITY_STATUS: string
          child 1,CREATED_ON: timestamp[us]
          child 2,TASK_ID: string
          child 3,esitoInfo: struct<ESITO: string>
              child 0,ESITO: string
HERE      child 4,DATA_SCADENZA_TASK: timestamp[us]>          HERE
HERE          child 0,ACTUAL_END: null                                                           HERE
              child 1,DATA_SCADENZA_TASK: timestamp[us]
      child 1,ticket: struct<TICKET_ID: string>
          child 0,TICKET_ID: string
  child 1,eventType: string
  child 2,identities: struct<ID_CONTO: string>
      child 0,ID_CONTO: string
_id: string
timestamp: timestamp[us]

如您所见，我已将列类型为“空”的字段标记为“此处”，即使其所有元素都为空（因此它被推断为空），我也想将其转换为日期时间。 有没有办法做到这一点？