AttributeError: module 'web3.manager' has no attribute 'request_blocking'

[r0fls]

• Version: 4.1.0
• Python: 3.6
• OS: osx

I received the error:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/Users/raphael.deem/code/fig-lotto/drawing.py", line 119, in run_lotto
    lotto.distribute()
  File "/Users/raphael.deem/code/fig-lotto/drawing.py", line 97, in distribute
    Eth.sendTransaction({"from": OWNER_ADDRESS, "to": wallet, "value": 1_000_000_000_000_000_000*amount/rate, "gas": 420000})
  File "/usr/local/lib/python3.6/site-packages/web3/eth.py", line 250, in sendTransaction
    return self.web3.manager.request_blocking(
AttributeError: module 'web3.manager' has no attribute 'request_blocking'

When executing the below code:

Eth = web3.eth.Eth(web3)
Eth.sendTransaction({"from": OWNER_ADDRESS, "to": wallet, "value": 1_000_000_000_000_000_000*amount/rate, "gas": 420000})

I was connecting to a test node on the Ropsten network.

[voith]

You need to create a web3 instance:

from web3 import Web3
# choose any provider of your choice
w3 = Web3(Web3.IPCProvider())
w3.eth.sendTransaction({"from": OWNER_ADDRESS, "to": wallet, "value": 1_000_000_000_000_000_000*amount/rate, "gas": 420000})

[pipermerriam]

@voith FYI: We've been using the convention w3 as the variable name for a web3 instance to reduce the likelyhood of confustion between the python module and an instance of the Web3 object.

[pipermerriam]

@r0fls you should consider using w3.toWei('1', 'ether') for currency conversions. Well tested to do the proper conversion and easier to read.