The function runs a random number of times. How to judge that the current operation is the last time

The

function runs randomly. How to determine whether the current run is the last
def a ():

pass

iTun0
while random number:

a()
Mar.06,2021

def a():
    pass

i=0
while :
    a()
// 
a()
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-64f5-1eb3da7-48251.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1eb3da7-48251.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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