How can I check whether a transaction hash is valid or not using Python [web3.py]?
The answers I found was in javascript, related:
-
Why can't you just check if the transaction with this hash exists on the chain ?– Itération 122442Oct 9, 2021 at 12:24
-
I don't want to check if the transaction hash exists on the chain, which will also consumes additional time to check from.– alperOct 9, 2021 at 22:23
-
Considering a hash is just a bunch of characters with a specific length (the string), any string with said length is a valid transaction hash.– Itération 122442Oct 10, 2021 at 7:15
-
Besides length it should not contain any invalid characters– alperOct 10, 2021 at 8:38
Add a comment
|
1 Answer
With the help of regex at https://ethereum.stackexchange.com/a/34286/4575:
/^0x([A-Fa-f0-9]{64})$/
import re
def is_transaction_valid(tx_hash) -> bool:
pattern = re.compile(r"^0x[a-fA-F0-9]{64}")
return bool(re.fullmatch(pattern, tx_hash))
tx_hash = "0xd65dc6bf6dcc111237f9acfbfa6003ea4a4d88f2e071f4307d3af81ae877f7be"
if is_transaction_valid(tx_hash):
print(f"{tx_hash} is an valid transaction.")
else:
print(f"{tx_hash} is NOT a valid transaction.")