def UpdateDatabase(dbname,tbname,start_time,end_time,update_factor,symbol_name){
        pt = loadTable(dbname,tbname)
	num_row = exec count(*) from loadTable(dbname,tbname) where tradetime>=start_time and tradetime<=end_time and symbol = symbol_name
	script = "update pt set "+update_factor+" = rand(100.0,"+num_row+") where tradetime>= "+start_time+" and tradetime <= "+end_time+" and symbol = "+'"'+symbol_name+'"'
	runScript(script)	
}
dbname,tbname = "dfs://test","test"
start_time,end_time =2022.01.01,2022.01.31
update_factor = "f001"
symbol_name = "AAA"
timer updateDatabase(dbname,tbname,start_time,end_time,update_factor,symbol_name)

运行上述代码报错：

Syntax Error: [line #1] Cannot recognize the token pttimer { updateDatabase: runScript(script) => Syntax Error: [line #1] Cannot recognize the token pt