hww: show deprecation warning once

Author: accumulator

electrum/plugins/digitalbitbox/digitalbitbox.py

@@ -73,7 +73,7 @@ def derive_keys(x):
 
 ENCRYPTION_PRIVKEY_KEY = 'encryptionprivkey'
 CHANNEL_ID_KEY = 'comserverchannelid'
-
+DEPRECATION_WARNING_SHOWN = False
 
 class DigitalBitbox_Client(HardwareClientBase):
     def __init__(self, plugin, hidDevice):
@@ -142,7 +142,9 @@ def get_xpub(self, bip32_path, xtype):
             "You should move your coins and migrate to a modern hardware device.")
         _logger.warning(deprecation_warning.replace("\n", " "))
 
-        if self.handler:
+        global DEPRECATION_WARNING_SHOWN
+        if self.handler and not DEPRECATION_WARNING_SHOWN:
+            DEPRECATION_WARNING_SHOWN = True
             self.handler.show_warning(deprecation_warning, blocking=True)
 
         return xpub

electrum/plugins/safe_t/clientbase.py

@@ -13,6 +13,9 @@
 from electrum.hw_wallet.plugin import HardwareClientBase, HardwareHandlerBase
 
 
+DEPRECATION_WARNING_SHOWN = False
+
+
 class GuiMixin(object):
     # Requires: self.proto, self.device
     handler: Optional[HardwareHandlerBase]
@@ -182,7 +185,9 @@ def get_xpub(self, bip32_path, xtype):
             "You should move your coins and migrate to a modern hardware device.")
         self.logger.warning(deprecation_warning.replace("\n", " "))
 
-        if self.handler:
+        global DEPRECATION_WARNING_SHOWN
+        if self.handler and not DEPRECATION_WARNING_SHOWN:
+            DEPRECATION_WARNING_SHOWN = True
             self.handler.show_warning(deprecation_warning, blocking=True)
 
         return BIP32Node(xtype=xtype,