What does the bold mean?
@Subroutine(TealType.uint64)
def executeAssetCreationTxn(txn_index: TealType.uint64) -> TxnExpr:
What do the → TxnExpr or → Expr: mean?
✔ Solved by Ben in post #2
What does this mean in PyTeal subroutines?
TxnExpr and Expr are both Pyteal Types, in the example you posted its a type hint to convey what is being returned from the function.