more robust commands.getprivatekeys() and bitcoin.is_segwit_address()

lib/bitcoin.py

@@ -569,7 +569,10 @@ def address_from_private_key(sec):
     return pubkey_to_address(txin_type, public_key)
 
 def is_segwit_address(addr):
+    try:
         witver, witprog = segwit_addr.decode(NetworkConstants.SEGWIT_HRP, addr)
+    except Exception as e:
+        return False
     return witprog is not None
 
 def is_b58_address(addr):

lib/commands.py

@@ -273,6 +273,8 @@ class Commands:
     @command('wp')
     def getprivatekeys(self, address, password=None):
         """Get private keys of addresses. You may pass a single wallet address, or a list of wallet addresses."""
+        if isinstance(address, str):
+            address = address.strip()
         if is_address(address):
             return self.wallet.export_private_key(address, password)[0]
         domain = address