Issue

Im getting functions from a smart contract in this format
I print them out in a loop:

allFunctions = contract.all_functions()
for text in allFunctions:
      print(text)

<Function approve(address,uint256)>
<Function balanceOf(address)>
<Function burn(uint256)>
<Function burnFrom(address,uint256)>
<Function decimals()>
<Function decreaseAllowance(address,uint256)>
<Function increaseAllowance(address,uint256)>
<Function mint(address,uint256)>
<Function name()>
<Function owner()>
<Function pause()>
<Function paused()>
<Function renounceOwnership()>
<Function symbol()>

Now I want to dynamically remove everything from this string so Im only left with the actual function name
which is approve balanceOf,name, owner pause etc…

I need to do this manually since a lot of smart contracts have different function names

So I can not use strip("<function ()>")
Any ideas on how I can solve this?

The ouptut type I get is

<class 'web3._utils.datatypes.allowance'>

Solution

Assuming all data in a string, you can use regex:

import re

a = '''<Function approve(address,uint256)>
<Function balanceOf(address)>
<Function burn(uint256)>
<Function burnFrom(address,uint256)>
<Function decimals()>
<Function decreaseAllowance(address,uint256)>
<Function increaseAllowance(address,uint256)>
<Function mint(address,uint256)>
<Function name()>
<Function owner()>
<Function pause()>
<Function paused()>
<Function renounceOwnership()>
<Function symbol()>'''

re.findall("Function (.*)\(.*\)", a)

edit:

import re

allFunctions = contract.all_functions()
for text in allFunctions:
      print(re.findall("Function (.*)\(.*\)", text.__str__())[0])

Answered By – warped

Answer Checked By – David Marino (BugsFixing Volunteer)