Function invocation error showing exactly the data types i provided

pythonweb3.py

I Was trying to interact with a smart contract named clearingHouse and use the function "openPosition", I went ahead and matched the data types as they were described using python3 web3 package but I still get this error which shows I ve matched everything correctly

Could not identify the intended function with name openPosition, positional arguments with type(s) (address,bool,bool,int,int,int,int,bytes) and keyword arguments with type(s) {}.
Found 1 function(s) with the name openPosition: ['openPosition((address,bool,bool,uint256,uint256,uint256,uint160,bytes32))']
Function invocation failed due to no matching argument types.

as shown above all my data types match the ones that are required

thanks for your time and help.

Best Answer

I faced the same problem, but I can't find a solution yet. Maybe you managed to overcome it?

Upd: My problem was that the parameters had to be passed as an array with a tuple: arg = [(...parameters...)]. And also I incorrectly counted one of the function parameters and the number went beyond the boundaries of the type in solidity (uint24). Therefore, I advise you to recalculate the call parameters again.

Related Solutions

[Ethereum] How to send a python bytearray into solidity function by web3.py

The function setUnitData(bytes32[10]) requires an array of 10 elements, each of which is 32 bytes of data. Since we don't know the purpose of the function, let's generate a some random data of that type:

>>> input_array = [bytes(range(idx, 32 + idx)) for idx in range(10)]
[b'\x00\x01\x02\x03\x04\x05\x06\x07\x08\t\n\x0b\x0c\r\x0e\x0f\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f',
 b'\x01\x02\x03\x04\x05\x06\x07\x08\t\n\x0b\x0c\r\x0e\x0f\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f ',
 b'\x02\x03\x04\x05\x06\x07\x08\t\n\x0b\x0c\r\x0e\x0f\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f !',
 b'\x03\x04\x05\x06\x07\x08\t\n\x0b\x0c\r\x0e\x0f\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f !"',
 b'\x04\x05\x06\x07\x08\t\n\x0b\x0c\r\x0e\x0f\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f !"#',
 b'\x05\x06\x07\x08\t\n\x0b\x0c\r\x0e\x0f\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f !"#$',
 b'\x06\x07\x08\t\n\x0b\x0c\r\x0e\x0f\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f !"#$%',
 b'\x07\x08\t\n\x0b\x0c\r\x0e\x0f\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f !"#$%&',
 b'\x08\t\n\x0b\x0c\r\x0e\x0f\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f !"#$%&\'',
 b'\t\n\x0b\x0c\r\x0e\x0f\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f !"#$%&\'(']

If looking at native bytes values in python makes you grumpy, you can convert to hex strings. Web3.py will accept either.

>>> from web3 import Web3
>>> hex_array = [Web3.toHex(bytes_data) for bytes_data in input_array] 
['0x000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f',
 '0x0102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f20',
 '0x02030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f2021',
 '0x030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f202122',
 '0x0405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f20212223',
 '0x05060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f2021222324',
 '0x060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f202122232425',
 '0x0708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f20212223242526',
 '0x08090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f2021222324252627',
 '0x090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f202122232425262728']

Now you can send a transaction with:

contract = self.contract_instance['../contracts/test.sol:test']
tx_hash = contract.functions.setUnitData(input_array).transact({'from': self.w3.toChecksumAddress(unit['update_account']), 'gas': 3400000})

(hex_array also works, in place of input_array)

[Ethereum] web3.py multiple argument

I think this should work:

 contract.transact({"from": walletaddr}).set_all(1, "0", 123123,"hash", "gap", "eul")

You were passing a Python set() object to the function as one argument, instead of multiple arguments.

Best Answer

Related Solutions

[Ethereum] How to send a python bytearray into solidity function by web3.py

[Ethereum] web3.py multiple argument

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