Repeat an iteration in loop if error occurs

Question

Is there a command such as break and continue which could repeat recent iteration?

For example, when exception is thrown.

for i in range(0,500):
    try:
        conn = getConnection(url+str(i))
        doSomething(conn)
    except:
        repeat

Let's have an iteration where i variable's value is 6. During this iteration some connection error occurred. I want to repeat this iteration.

Is there a command which can do that?

Of course I can do this:

i=0
while i!=500:
    try:
        conn = getConnection(url+str(i))
        doSomething(conn)
        i+=1
    except:
        pass