Calling the deprecated sha3 method as an instance (bound) method causes an error.

[nbt-rezaem]

• Version: 5.0.0b1
• Python: 3.7
• OS: win
• pip freeze output

attrdict==2.0.1
certifi==2019.3.9
chardet==3.0.4
cytoolz==0.9.0.1
eth-abi==2.0.0b8
eth-account==0.3.0
eth-hash==0.2.0
eth-keyfile==0.5.1
eth-keys==0.2.2
eth-rlp==0.1.2
eth-typing==2.1.0
eth-utils==1.5.2
ethpm==0.1.4a15
hexbytes==0.1.0
idna==2.8
ipfsapi==0.4.3
jsonschema==2.6.0
lru-dict==1.1.6
parsimonious==0.8.1
protobuf==3.7.1
pycryptodome==3.8.1
pypiwin32==223
pywin32==224
requests==2.21.0
rlp==1.1.0
six==1.12.0
toolz==0.9.0
urllib3==1.24.3
web3==5.0.0b1
websockets==7.0

What was wrong?

Calling the deprecated sha3 method as an instance (bound) method causes an error.

Please include any of the following that are applicable:

>>> import web3
>>> w3 = web3.Web3()
>>> foo='hello()'
>>> w3.keccak(text=foo)
HexBytes('0x19ff1d210e06a53ee50e5bad25fa509a6b00ed395695f7d9b82b68155d9e1065')
>>> web3.Web3.sha3(text=foo)
HexBytes('0x19ff1d210e06a53ee50e5bad25fa509a6b00ed395695f7d9b82b68155d9e1065')
>>> w3.sha3(text=foo)
__main__:1: DeprecationWarning: sha3 is deprecated in favor of keccak
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File ".\v5\lib\site-packages\web3\_utils\decorators.py", line 57, in wrapper
    return to_wrap(*args, **kwargs)
  File ".\v5\lib\site-packages\eth_utils\functional.py", line 46, in inner
    return callback(fn(*args, **kwargs))
  File ".\v5\lib\site-packages\web3\main.py", line 169, in sha3
    return Web3.keccak(primitive, text, hexstr)
  File ".\v5\lib\site-packages\eth_utils\functional.py", line 46, in inner
    return callback(fn(*args, **kwargs))
  File ".\v5\lib\site-packages\web3\main.py", line 183, in keccak
    {'text': text, 'hexstr': hexstr}
TypeError: You called keccak with first arg <web3.main.Web3 object at 0x0150E5F0> and keywords {'text': 'hello()', 'hexstr': None}. You must call it with one of these approaches: keccak(text='txt'), keccak(hexstr='0x747874'), keccak(b'\x74\x78\x74'), or keccak(0x747874).

How can it be fixed?

I have a pull request to add @staticmethod to the definition to fix this.
After the pull request:

>>> w3.sha3(text=foo)
__main__:1: DeprecationWarning: sha3 is deprecated in favor of keccak
HexBytes('0x19ff1d210e06a53ee50e5bad25fa509a6b00ed395695f7d9b82b68155d9e1065')