When python openpyxl manipulates the table, the cell border disappears after saving the file.

there is no border on one side of the cell after saving the file. I don"t know what happened, but this seems to be the case with merging cells.
solve

Openpyxl excel python
Jun.02,2021

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MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1b387a4-2ae5e.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b387a4-2ae5e.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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