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ethereum / web3.py

A python interface for interacting with the Ethereum blockchain and ecosystem.
http://web3py.readthedocs.io
MIT License
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web3.exceptions.BadFunctionCallOutput: Could not transact with/call contract function, is contract deployed correctly and chain synced? #1222

Closed henrytom1703 closed 5 years ago

henrytom1703 commented 5 years ago

Source code:

from web3 import Web3
import web3
import json
from decimal import Decimal
from ethtoken.abi import EIP20_ABI
from eth_account import Account
import json

etherscan_provider = Web3.HTTPProvider('https://ropsten.infura.io/v3/xxxxxxxxxxxxxxxxx')
w3 = Web3(etherscan_provider)

OMG = '[{"constant":true,"inputs":[],"name":"mintingFinished","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"name","outputs":[{"name":"","type":"string"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_spender","type":"address"},{"name":"_value","type":"uint256"}],"name":"approve","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"totalSupply","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_from","type":"address"},{"name":"_to","type":"address"},{"name":"_value","type":"uint256"}],"name":"transferFrom","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"decimals","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":false,"inputs":[],"name":"unpause","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_to","type":"address"},{"name":"_amount","type":"uint256"}],"name":"mint","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"paused","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"_owner","type":"address"}],"name":"balanceOf","outputs":[{"name":"balance","type":"uint256"}],"payable":false,"type":"function"},{"constant":false,"inputs":[],"name":"finishMinting","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":false,"inputs":[],"name":"pause","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"owner","outputs":[{"name":"","type":"address"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"symbol","outputs":[{"name":"","type":"string"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_to","type":"address"},{"name":"_value","type":"uint256"}],"name":"transfer","outputs":[],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_to","type":"address"},{"name":"_amount","type":"uint256"},{"name":"_releaseTime","type":"uint256"}],"name":"mintTimelocked","outputs":[{"name":"","type":"address"}],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"_owner","type":"address"},{"name":"_spender","type":"address"}],"name":"allowance","outputs":[{"name":"remaining","type":"uint256"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"payable":false,"type":"function"},{"anonymous":false,"inputs":[{"indexed":true,"name":"to","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"Mint","type":"event"},{"anonymous":false,"inputs":[],"name":"MintFinished","type":"event"},{"anonymous":false,"inputs":[],"name":"Pause","type":"event"},{"anonymous":false,"inputs":[],"name":"Unpause","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"owner","type":"address"},{"indexed":true,"name":"spender","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"from","type":"address"},{"indexed":true,"name":"to","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"Transfer","type":"event"}]'
print(json.loads(OMG))
token = w3.eth.contract(address='0xd26114cd6EE289AccF82350c8d8487fedB8A0C07', abi=json.loads(OMG))
print(token)
print(token.functions.name().call())

Error:

`/home/tomtony/python_env/fx-env/bin/python /home/tomtony/sourcecode/fx001/backend/TestH3.py
<web3.utils.datatypes.Contract object at 0x7f44d2ac7e10>
Traceback (most recent call last):
  File "/home/tomtony/python_env/fx-env/lib/python3.6/site-packages/web3/contract.py", line 1372, in call_contract_function
    output_data = decode_abi(output_types, return_data)
  File "/home/tomtony/python_env/fx-env/lib/python3.6/site-packages/eth_abi/abi.py", line 96, in decode_abi
    return decoder(stream)
  File "/home/tomtony/python_env/fx-env/lib/python3.6/site-packages/eth_abi/decoding.py", line 118, in __call__
    return self.decode(stream)
  File "/home/tomtony/python_env/fx-env/lib/python3.6/site-packages/eth_utils/functional.py", line 46, in inner
    return callback(fn(*args, **kwargs))
  File "/home/tomtony/python_env/fx-env/lib/python3.6/site-packages/eth_abi/decoding.py", line 164, in decode
    yield decoder(stream)
  File "/home/tomtony/python_env/fx-env/lib/python3.6/site-packages/eth_abi/decoding.py", line 118, in __call__
    return self.decode(stream)
  File "/home/tomtony/python_env/fx-env/lib/python3.6/site-packages/eth_abi/decoding.py", line 133, in decode
    start_pos = decode_uint_256(stream)
  File "/home/tomtony/python_env/fx-env/lib/python3.6/site-packages/eth_abi/decoding.py", line 118, in __call__
    return self.decode(stream)
  File "/home/tomtony/python_env/fx-env/lib/python3.6/site-packages/eth_abi/decoding.py", line 186, in decode
    raw_data = self.read_data_from_stream(stream)
  File "/home/tomtony/python_env/fx-env/lib/python3.6/site-packages/eth_abi/decoding.py", line 296, in read_data_from_stream
    len(data),
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/tomtony/sourcecode/fx001/backend/TestH3.py", line 16, in <module>
    print(token.functions.name().call())
  File "/home/tomtony/python_env/fx-env/lib/python3.6/site-packages/web3/contract.py", line 1115, in call
    **self.kwargs
  File "/home/tomtony/python_env/fx-env/lib/python3.6/site-packages/web3/contract.py", line 1394, 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?

Process finished with exit code 1

`

pipermerriam commented 5 years ago

The address you linked doesn't appear to have any code associated with it: https://ropsten.etherscan.io/address/0xd26114cd6EE289AccF82350c8d8487fedB8A0C07