graph={'673TCDealersBillingAgregationByPaymntresp': ['562TCDealersBillingIbonus', '632TCDealersBillingAgregationByOutlets'], 
'616TCDealersBillingObonus': ['496TCDealersBillingBillingRecordCreation', '572TCDealersBillingLbonus'], 
'475TCDealersBillingInsertContracts': ['592TCDealersBillinggmbdTwithdrawal', '620TCDealersBillingRbonus'], 
'562TCDealersBillingIbonus': ['594TCDealersBillinggmbdIwithdrawal', '576TCDealersBillinggmbacTmNwithdrawal', '500TCDealersBillingDataArchiving'], 
'582TCDealersBillinggmbacTmIwithdrawal': ['550TCDealersBillingMbonus', '560TCDealersBillingTbonus', '477TCDealersBillingBuildHierarchy', '534TCDealersBillingGetMoneyBackNotPayed', '475TCDealersBillingInsertContracts', '600TCDealersBillingGbonus'], 
'511TCDealersBillingDbonus': ['502TCDealersBillingInvoiceCreation', '570TCDealersBillingNbonus', '642TCDealersBillingServCenterBonus', '673TCDealersBillingAgregationByPaymntresp'], 
'500TCDealersBillingDataArchiving': ['502TCDealersBillingInvoiceCreation'], 
'634TCDealersBillingMarketing': ['634TCDealersBillingMarketing', '612TCDealersBillingKbonus'], 
'554TCDealersBillinggmbacTmTwithdrawal': ['511TCDealersBillingDbonus', '614TCDealersBillingSbonus']}
import sys
report=sys.stdout#open("123.txt","w")

def find_all_paths(graph, start, val=[], path=[], a=[]):
    path = path + [start]
            
    val.append(path)
    if not graph.has_key(start):
        return []
    paths = []
            
    for node in graph[start]:
        if node not in path:
            newpaths = find_all_paths(graph, node, val, path, a)
            for newpath in newpaths:
                paths.append(newpath)

           
    for i in val:
        for j in i:
            if j not in a:
                a.append(j)
    a.remove(start)        
    return a


print>>report, find_all_paths(graph,'511TCDealersBillingDbonus')
print>>report, "===================================================="
print>>report, find_all_paths(graph,'602TCDealersBillingJbonus')
print>>report, "++++++++++++++++++++++++++++++++++++++++++++++++"
print>>report, find_all_paths(graph,'511TCDealersBillingDbonus')
print>>report, "===================================================="

['502TCDealersBillingInvoiceCreation', '570TCDealersBillingNbonus', '642TCDealersBillingServCenterBonus', '594TCDealersBillinggmbdIwithdrawal', '576TCDealersBillinggmbacTmNwithdrawal', '500TCDealersBillingDataArchiving', '562TCDealersBillingIbonus', '632TCDealersBillingAgregationByOutlets', '673TCDealersBillingAgregationByPaymntresp']
====================================================
[]
++++++++++++++++++++++++++++++++++++++++++++++++
['502TCDealersBillingInvoiceCreation', '570TCDealersBillingNbonus', '642TCDealersBillingServCenterBonus', '594TCDealersBillinggmbdIwithdrawal', '576TCDealersBillinggmbacTmNwithdrawal', '632TCDealersBillingAgregationByOutlets',[u]602TCDealersBillingJbonus[/u], '500TCDealersBillingDataArchiving', '562TCDealersBillingIbonus', '673TCDealersBillingAgregationByPaymntresp']

>>> def f(a, b=[]):
... 	b.append(a)
... 	return b
... 
>>> f(1, [])
[1]
>>> f(1, [])
[1]
>>> f(2, [])
[2]
>>> f(2, [1])
[1, 2]
>>> f(1)
[1]
>>> f(1)
[1, 1]
>>> f(2)
[1, 1, 2]
>>>