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addr_sync: expand docstring for get_tx_fee

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SomberNight
2023-06-13 00:24:56 +00:00
parent 1b07472805
commit 703ec09355
1 changed files with 8 additions and 1 deletions
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9
electrum/address_synchronizer.py
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@@ -742,7 +742,14 @@ class AddressSynchronizer(Logger, EventListener):
return delta return delta
def get_tx_fee(self, txid: str) -> Optional[int]: def get_tx_fee(self, txid: str) -> Optional[int]:
""" Returns tx_fee or None. Use server fee only if tx is unconfirmed and not mine""" """Returns tx_fee or None. Use server fee only if tx is unconfirmed and not mine.
Note: being fast is prioritised over completeness here. We try to avoid deserializing
the tx, as that is expensive if we are called for the whole history. We sometimes
incorrectly early-exit and return None, e.g. for not-all-ismine-input txs,
where we could calculate the fee if we deserialized (but to see if we have all
the parent txs available, we would have to deserialize first).
"""
# check if stored fee is available # check if stored fee is available
fee = self.db.get_tx_fee(txid, trust_server=False) fee = self.db.get_tx_fee(txid, trust_server=False)
if fee is not None: if fee is not None: