我有以下一段代码在postgresql服务器中执行。Python 3索引超出范围错误
from datetime import datetime
now = str(datetime.now(None))
procurementinsertqueries=[]
priceupdatequeries = []
inventoryupdatequeries=[]
ptrcode = -1
debugcode=""
try:
unpbatches=[]
query = "select distinct(fk_procurementbatch_code) from newprocurementlist"
proclistresult = plpy.execute(query)
for rec in proclistresult:
unpbatches.append(rec["fk_procurementbatch_code"])
for batchcode in unpbatches:
ptrcode=-1
query = "select procurementtransaction_code from procurement where fk_procurementbatch_code="+str(batchcode)+" order by procurementtransaction_code desc limit 1"
ptrcoderesult = plpy.execute(query)
if len(ptrcoderesult)==0:
ptrcode=0
else:
ptrcode=ptrcoderesult[0]["procurementtransaction_code"]
query = "select * from newprocurementlist where fk_procurementbatch_code="+str(batchcode)
newproclistresult = plpy.execute(query)
for r in newproclistresult:
ptrcode+=1
_bcode = str(r["fk_procurementbatch_code"])
_pref = str(r["fk_product_ref"])
_up = str(r["unitsprocured"])
_tp = str(r["totalprice"])
_cp = str(r["costprice"])
_sp = str(r["sellingprice"])
_mrp = str(r["mrp"])
_trcode = str(ptrcode)
procurementinsertqueries.append("insert into procurement values("+_bcode+","+_pref+","+_up+","+_tp+","+_cp+","+_sp+","+_mrp+","+_trcode+")")
priceupdatequeries.append("insert into productpriceupdatelist values("+_pref+")")
_aunits = 0.0
_newunits = 0.0
query="select unitsavailable from inventory where fk_product_ref="+_pref
au = -1
au = plpy.execute(query)
_aunits=float(au[0]["unitsavailable"])
_newunits = _aunits+float(r["unitsprocured"])
inventoryupdatequeries.append("update inventory set unitsavailable="+str(_newunits)+" where fk_product_ref="+_pref)
debugcode+="--Completed--"
debugcode+="---Loop completed---"
except Exception as e:
plpy.execute("insert into log values(\'"+now+"\')")
raise plpy.error("Error generating insert queries-->"+str(e)+"Debug is "+debugcode)
try:
with plpy.subtransaction():
for qry in procurementinsertqueries:
plpy.execute(qry)
for qry in priceupdatequeries:
plpy.execute(qry)
for qry in inventoryupdatequeries:
plpy.execute(qry)
except Exception as e:
plpy.execute("insert into log values(\'"+now+": Error executing insert queries\')")
raise plpy.error("Error executing procurement updates. There could be loss of data.Please review database error log. -->"+str(e))
try:
plpy.execute("delete from newprocurementlist")
except Exception as e:
plpy.execute("insert into log values(\'"+now+": Error deleting new procurement list table after successful updates\')")
raise plpy.error("Error deleting completed procurement list. There could be duplication of data. Review error log file-->"+str(e))
try:
plpy.execute("select product_price_update_process()")
except Exception as e:
raise plpy.error("Error updating prices. "+str(e))
问题是我得到一个“索引超出范围”的错误。附加的是我得到的错误。
ERROR: plpy.Error: Error generating insert queries-->list index out of rangeDebug is --Completed--
CONTEXT: Traceback (most recent call last):
PL/Python function "procurementlist_process", line 61, in <module>
raise plpy.error("Error generating insert queries-->"+str(e)+"Debug is "+debugcode)
PL/Python function "procurementlist_process"
我不能理解当我使用for循环时索引超出范围的方式。
请帮忙!!
编辑:请注意,在我的表中的测试数据,在unpbatches项目数只有1
您正在吞咽原始异常。出于测试目的,请在您的except语句中对其进行重新评估,以便我们看到它实际来自哪个线程。 – jknupp 2013-02-22 13:52:36
我正在更新查询列表时出现异常。该控件甚至不会进入查询执行的部分。在我将查询插入到适当列表的位置时弹出错误。 – 2013-02-22 13:54:51
你真的需要在'except'子句中单独调用'raise',这样我们就可以看到实际的回溯和行数。 – jknupp 2013-02-22 14:16:55