Warning when doubly linked list is defined gloablly

[chand]

Hi Terry..,

Here is the code which gives the error...

Let me know exact reason for this Error


import os,sys,re,string,math
from xml.dom import minidom, Node
from Layer import Layer
from LMessage import *
from Param import *
from Message import *
from message_mapping import *
from protocol_mapping import *
from symbol_mapping import *
from opt_list_mapping import *
g_del_opt_list =[[],[],[],[],[],[],[]]
sflag = 0
index=0
del_index=0
radflag = 0
depth = 0
xmlflag = 0
opt_param_list = []
del_opt_param_list = []
#g_opt_list = []
MTAS_HOME="/home/chandras/XML_FILES/"
SIG_STANDARD_HOME = "/home/chandras/SIGNALLING_STANDARD/ANSI_SS7/"
symbols=['(',')','{','}','[',']','.']
reverse_symbols=['<','>','~']
layers=['MTP3','SCCP','IOS','CDTAPM2','CDTAPC2','ISUP','IS-41D-SQA']
GUI_API_COMMAND_LIST = [
			"NEW",
			"ADD_OPTIONAL_PARAM",
			"DELETE_OPTIONAL_PARAM",
			"DELETE_LAYER",
			"RENAME"
			]

BASE2 = "01"
BASE10 = "0123456789"
BASE16 = "0123456789ABCDEF"

Message_obj = Message()
filename =""
buffer = []
#LIST = []
def Process_GUI_Command(arg):
	global Message_obj
	global filename
	print "### COMMAND ###", arg[0]
        save_fd = os.dup(1)
	if arg[0] ==  "DELETE_OPTIONAL_PARAM":
		out_file = file('/tmp/te6.txt', 'w+')
	elif arg[0] ==  "ADD_OPTIONAL_PARAM":
		out_file = file('/tmp/te3.txt', 'w+')
        else :
		out_file = file('/tmp/te.txt', 'w+')
	os.dup2(out_file.fileno(), sys.stdout.fileno())

	if      arg[0]  ==  "NEW" :
		global g_opt_list
		Message_obj = Message()
		layerList = listLayers("ANSI_Layers")
		layerList = str(layerList)
		layerList = layerList.replace(",","")
		for i in range(0,len(g_opt_list)):
			g_opt_list[i] = []
		os.dup2(save_fd, 1)
		return layerList


	elif    arg[0]  ==   "ADD_OPTIONAL_PARAM" :
		global g_opt_list
		global layers
		global index
		message_name = ""
		layer_name   = arg[1]
		#print "Layer Name", layer_name
		for layer in layers:
			if layer == layer_name:
				if OPT_LIST_MAPPING.has_key(layer_name):
					index = OPT_LIST_MAPPING[layer_name]
					break

		if arg[2] != 'Null':
			optional_parameter_name = str(arg[2]).replace("+",",")
			for symbol in reverse_symbols:
				if symbol in optional_parameter_name:
					if SYMBOL_REVERSE_MAPPING.has_key(symbol):
						old_symbol = SYMBOL_REVERSE_MAPPING[symbol]
						optional_parameter_name =
optional_parameter_name.replace(symbol,old_symbol)


			Message_obj.AddParam(message_name,layer_name,
optional_parameter_name )
		else : optional_parameter_name= 'Null'


		add_delete_flag = 0

		param_name = optional_parameter_name
		show_opts(layer_name,add_delete_flag,param_name)
	        if int(add_delete_flag) == 0:
			add_delete_flag = 0
			if  optional_parameter_name != "Null":
				optList =
Message_obj.showOptionalParameters(layer_name,add_delete_flag,optional_parameter_name)
				g_opt_list[int(index)].append(optional_parameter_name)
				for i in g_opt_list[int(index)]:
					if g_opt_list[int(index)].count(i) == 1:
						optList =
Message_obj.showOptionalParameters(layer_name,add_delete_flag,i)
						displayoptparams(optList,layer_name,0,"Null")
				i= "Null"
				optional_parameter_name = "Null"
			add_delete_flag = 1
		os.dup2(save_fd, 1)

	else:
		print "Invalid Option"



def  show_opts(layer_name,add_delete_flag,param_name):
	global index
	global g_opt_list
	#param_name = "Null"
	List =
Message_obj.showOptionalParameters(layer_name,add_delete_flag,"Null")
	if (len(List)== 0)  :
		return "None"
	displayoptparams(List,layer_name,add_delete_flag,Message_obj._message_name)
	if param_name == 'Null':
		for i in g_opt_list[int(index)]:
			if g_opt_list[int(index)].count(i) == 1:
				optList =
Message_obj.showOptionalParameters(layer_name,add_delete_flag,i)
				displayoptparams(optList,layer_name,0,"Null")
		add_delete_flag = 1
		return "None"



def main():

	#choice = sys.argv[1]
	print "####### choice ",
	#Process_GUI_Command("NEW")
        #list=CMSR.showOptionalParameters("SCCP",0)
       	#CMSR.saveXMLfile("CMSR2.xml","CMSR")


if __name__ == '__main__':
    main()


--Thanks and bestregards.,
--Chandra

Terry Reedy wrote:
> "chand" <chandra.bangalore at gmail.com> wrote in message
> news:1124881914.018491.315800 at g14g2000cwa.googlegroups.com...
> > Hi.,
> >
> > In my api.py file 'g_opt_list' is defined globally
> > g_opt_list =[[],[],[],[],[],[],[]]
> >
> > I am using this global list in the fucntion
> >
> > def function ():
> >    gloabl g_opt_list
> >
> > when I run the py file, I am getting the Following Error
> >
> > SyntaxWarning: name 'g_opt_list' is used prior to global declaration
> >
> > Please let me know how to remove this error
>
> To expand slightly on previous answers:
>
> 1. Write a *minimal* file that gives you the error.  This means that
> removing any statement ceases to give you the error.  This may answer your
> questions.
>
> 2. If still puzzled, post again.  But cut and paste that *exact* file and
> also the *full* error traceback.
> 
> Terry J. Reedy