How to recover text that was encoded with base64?

How can I recover a text that was corrupted by base64 encoding? E.g.

f('Dan=E7a')=Dança

I tried with python but couldn't get it rig开发者_Python百科ht.

That looks like Quoted-printable encoding, not base-64.

There's a module in the Python standard library called quopri that should be able to convert the text.