PyTeal - Logicsig

post by SethDev on Feb 8, 2022

I was playing around with Pyteal and I thought about this…

program = And(
        Txn.type_enum() == TxnType.Payment,
        Txn.fee() <= Int(1000),
        Txn.amount() >= Int(1000),
        Txn.sender() == Addr(),
        Global.group_size() == Int(1),
        Txn.rekey_to() == Global.zero_address()
    )

I want to declare the Txn.sender() to be the contract address. How do I specify that condition?

post by Ben on Feb 8, 2022

Txn.sender() is implicitly the contract address since it can't be anything else.

post by SethDev on Feb 8, 2022

But I can specify the sender to another address like so:

Txn.sender() == "address" and only that address passed will be the sender else the contract fails. So do you mean if I don’t specify, the Txn.sender() will be the contract address. Am I right?

post by Ben on Feb 8, 2022

In TEAL the Txn is the transaction currently being evaluated. The sender will always* be the contract address

*except in the case of a rekey

post by SethDev on Feb 8, 2022

I understand now, Thank you Ben!