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tel={}
tel["ernesto"] = ["+549114578459", "+54875", "+548654785"]
tel["valeria"] = ["+339114578459"]
tel["enrique"] = ["+549114578459", "+3415546"]

#construir una lista con los nombres de quienes tienen algun tel argentino

d = []

for (k,v) in tel.items():
    print(k , v )
    
    i = 0
    while i < len (v) and v[i][1:3] != "54":
        i += 1
    
    if i == len(v):
        pass
    else: #v[i][1:3] == "54":
        d.append(k)
    
    
print(d)