Fails to run on Kovan, Goerli, Mainnet

[LinuxIsCool]

Kovan is deprecated and no longer supported by infura.

I tried running the following:

python3 samples/poolCreation/poolCreationSample.py samples/poolCreation/sampleLBPool.json

on both mainnet and goerli. I get the following error:

Missing contracts on mainnet: [ChildChainStreamer, ChildChainLiquidityGaugeFactory]

==============================================================

==============================================================
================ Step 1: Check Token Balances ================
==============================================================

Traceback (most recent call last):
  File "/home/ygg/.cache/pypoetry/virtualenvs/balpy-yyw1STJO-py3.10/lib/python3.10/site-packages/web3/contract.py", line 1507, in call_contract_function
    output_data = web3.codec.decode_abi(output_types, return_data)
  File "/home/ygg/.cache/pypoetry/virtualenvs/balpy-yyw1STJO-py3.10/lib/python3.10/site-packages/eth_abi/codec.py", line 181, in decode_abi
    return decoder(stream)
  File "/home/ygg/.cache/pypoetry/virtualenvs/balpy-yyw1STJO-py3.10/lib/python3.10/site-packages/eth_abi/decoding.py", line 127, in __call__
    return self.decode(stream)
  File "/home/ygg/.cache/pypoetry/virtualenvs/balpy-yyw1STJO-py3.10/lib/python3.10/site-packages/eth_utils/functional.py", line 45, in inner
    return callback(fn(*args, **kwargs))
  File "/home/ygg/.cache/pypoetry/virtualenvs/balpy-yyw1STJO-py3.10/lib/python3.10/site-packages/eth_abi/decoding.py", line 173, in decode
    yield decoder(stream)
  File "/home/ygg/.cache/pypoetry/virtualenvs/balpy-yyw1STJO-py3.10/lib/python3.10/site-packages/eth_abi/decoding.py", line 127, in __call__
    return self.decode(stream)
  File "/home/ygg/.cache/pypoetry/virtualenvs/balpy-yyw1STJO-py3.10/lib/python3.10/site-packages/eth_abi/decoding.py", line 198, in decode
    raw_data = self.read_data_from_stream(stream)
  File "/home/ygg/.cache/pypoetry/virtualenvs/balpy-yyw1STJO-py3.10/lib/python3.10/site-packages/eth_abi/decoding.py", line 305, in read_data_from_stream
    raise InsufficientDataBytes(
eth_abi.exceptions.InsufficientDataBytes: Tried to read 32 bytes.  Only got 0 bytes

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/home/ygg/Workspace/Forks/balpy/samples/poolCreation/poolCreationSample.py", line 112, in <module>
    main();
  File "/home/ygg/Workspace/Forks/balpy/samples/poolCreation/poolCreationSample.py", line 39, in main
    if not bal.erc20HasSufficientBalances(tokens, initialBalances):
  File "/home/ygg/Workspace/Forks/balpy/balpy/balpy.py", line 618, in erc20HasSufficientBalances
    currentHasSufficientBalance = self.erc20HasSufficientBalance(token, amount);
  File "/home/ygg/Workspace/Forks/balpy/balpy/balpy.py", line 595, in erc20HasSufficientBalance
    balance = self.erc20GetBalanceStandard(tokenAddress);
  File "/home/ygg/Workspace/Forks/balpy/balpy/balpy.py", line 564, in erc20GetBalanceStandard
    decimals = self.erc20GetDecimals(tokenAddress);
  File "/home/ygg/Workspace/Forks/balpy/balpy/balpy.py", line 557, in erc20GetDecimals
    decimals = token.functions.decimals().call();
  File "/home/ygg/.cache/pypoetry/virtualenvs/balpy-yyw1STJO-py3.10/lib/python3.10/site-packages/web3/contract.py", line 954, in call
    return call_contract_function(
  File "/home/ygg/.cache/pypoetry/virtualenvs/balpy-yyw1STJO-py3.10/lib/python3.10/site-packages/web3/contract.py", line 1528, in call_contract_function
    raise BadFunctionCallOutput(msg) from e
web3.exceptions.BadFunctionCallOutput: Could not transact with/call contract function, is contract deployed correctly and chain synced?

[gerrrg]

A number of samples still pointing to kovan is a known issue, just haven't had the time to address it

What exactly are you passing as your sampleLBPool.json to get these errors?

[LinuxIsCool]

This:

https://github.com/balancer-labs/balpy/blob/22d0c65749beb664b4afd572e7d4ffa334de7157/samples/poolCreation/sampleLBPool.json

I see that you edited that file in the following commit. Maybe I should pull and try again.

[LinuxIsCool]

What's the solution for moving beyond Kovan? Point everything to Goerli? Would that work?

[gerrrg]

you said you were trying to launch a pool on Goerli, but that's a kovan sample file. What file were you using to deploy a pool on Goerli?

The solution for moving beyond Kovan is to move everything to Goerli, yeah.

[LinuxIsCool]

Yes sorry, I made one change to that file which was changing the network to Goerli.

Thanks for clarifying the Goerli migration. An easy contribution to the repo.