How to change passphrase on wallet?

[bitsam]

I had to recover my wallet from seed and the last step it asked for a passphrase to encrypt the wallet. Noob error, i thougth this was the seed mnemomic. I really don't want to have to input the mnemonic each time I open the wallet. However I can't see a way to change the wallet passphrase. Can someone please help with instructions on how to do this?

[kristapsk]

Use changepass method of wallet-tool.py.

[bitsam]

Thank you