Need Tutorial on writing contracts

Technologov

For example, I want Alice and Bob being able to setup a "bank account", so each one of them can withdraw 1% of amount per day, but both of them can withdraw 100% per day.

How do I write this contract ? (preferably in python)
(As I'm noob programmer, it needs to be detailed for me to understand it)

-Technologov

nestor

First read this, even if it's in Lisp notation:

https://github.com/ethereum/cpp-ethereum/wiki/LLL-Tutorial

N.

StephanTual

http://forum.ethereum.org/discussion/505/writing-smart-contracts-faq-live-updates#latest

Jasper

Both cll-sim and ethereum-simulator seem to currently still require entering contracts in their own languages. Currently like cll-sim more, you can write tests permanently rather than playing with them. Also Python is more like CLL.(though a javascript-like syntax converter could be made)

For starting with CLL-sim, i suggest looking at the python examples, running then ./run.py the_python_file, then you can just replace the code with your own, and the same to the test below. The first class is the contract and `run` is what it does receiving a transaction. The second class tests.

Ethereum-simulator could also be seen as a neat gui, which potentially could have a real(or faked-blocks-but-the-real-ethereum execution for simulation)
ethereum backend. (ethereum-cpp gui seems a bit ugly and hard to use, i am sure that would improve though)