I cannot find way to look at wallet.dat with pywallet. have not password. Can I see address with no password?
Its encrypted if you need password, you can't answering your question.
You need to remember your password and if you can't, you can try brute-force it.
~
I think OP doesn't need a password if he just want to see the addresses in the wallet
he will only need the password when he wants to sign a transaction or extract private keys
--dumpwallet should give you output of all addresses and their
encrypted private keys
check this post
Re: What "--dumpwallet" do (pywallet) ... safety note: make multiple backup copies of your wallet.dat file and always work with a copy
To tell you more, is it even worth hassle? How many bitcoins are in this wallet?
perhaps he wants to see his addresses so that he can check their balances on block explorer
if he already know his wallet balance and/or addresses, most likely he will ask how to recover his bitcoin