This lesson shows off the %%vyper cell magic command that compiles a dummy Vyper price oracle contract into a variable for testing Curve Llama Lend.
Built-in IPython magic command to list all currently available magic functions
%lsmagic
The EOA (Externally Owned Account) is the account Titanoboa uses by default for msg.sender top-level calls and tx.origin in state-mutating function calls
boa.env.eoa
Vyper Code
Documentation