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## arrAccount = [["A", "a1@a.com", "a2@a.com"], ["B", "b1@b.com"], ["A", "a3@a.com", "a1@a.com"]] ## Example 1
arrAccount = [["A", "a1@a.com", "a2@a.com"], ["B", "b1@b.com"], ["A", "a3@a.com"], ["B", "b2@b.com", "b1@b.com"]] ## Example 2
arrUser = [arrAccount[0][0]]
arrEmail = [arrAccount[0][1:]]
arrFinal = []
for nIndx in range(1, len(arrAccount)):
if arrAccount[nIndx][0] not in arrUser:
arrUser.append(arrAccount[nIndx][0])
arrEmail.append(arrAccount[nIndx][1:])
else:
nFindIndx = arrUser.index(arrAccount[nIndx][0])
if len(list(set(arrEmail[nFindIndx]) & set(arrAccount[nIndx][1:]))) == 0:
arrUser.append(arrAccount[nIndx][0])
arrEmail.append(arrAccount[nIndx][1:])
else:
arrEmail[nFindIndx] = sorted(list(set(arrEmail[nFindIndx] + arrAccount[nIndx][1:])))
## print (arrUser)
## print (arrEmail)
for nIndx in range(0, len(arrUser)):
arrFinal.append([arrUser[nIndx], str(arrEmail[nIndx][:])[1:-1]])
print (arrFinal)
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