fix #3964

gui/qt/history_list.py

@@ -29,8 +29,7 @@ import datetime
 from electrum.wallet import AddTransactionException, TX_HEIGHT_LOCAL
 from .util import *
 from electrum.i18n import _
-from electrum.util import block_explorer_URL
-from electrum.util import timestamp_to_datetime, profiler
+from electrum.util import block_explorer_URL, profiler
 
 try:
     from electrum.plot import plot_history, NothingToPlotException
@@ -234,7 +233,6 @@ class HistoryList(MyTreeWidget, AcceptFileDragDrop):
             entry = ['', tx_hash, status_str, label, v_str, balance_str]
             fiat_value = None
             if value is not None and fx and fx.show_history():
-                date = timestamp_to_datetime(time.time() if conf <= 0 else timestamp)
                 fiat_value = tx_item['fiat_value'].value
                 value_str = fx.format_fiat(fiat_value)
                 entry.append(value_str)

lib/util.py

@@ -419,6 +419,8 @@ def format_satoshis(x, is_diff=False, num_zeros = 0, decimal_point = 8, whitespa
     return result
 
 def timestamp_to_datetime(timestamp):
+    if timestamp is None:
+        return None
     return datetime.fromtimestamp(timestamp)
 
 def format_time(timestamp):

lib/wallet.py

@@ -1000,7 +1000,7 @@ class Abstract_Wallet(PrintError):
                 'value': Satoshis(value),
                 'balance': Satoshis(balance)
             }
-            item['date'] = timestamp_to_datetime(timestamp) if timestamp is not None else None
+            item['date'] = timestamp_to_datetime(timestamp)
             item['label'] = self.get_label(tx_hash)
             if show_addresses:
                 tx = self.transactions.get(tx_hash)