isinstance is used instead of __qualname__

src/apps/homescreen/__init__.py

@@ -3,6 +3,7 @@ from trezor.utils import symbol, model
 from trezor.wire import register, protobuf_workflow
 from trezor.messages import wire_types
 from trezor.messages.Features import Features
+from trezor.messages.Initialize import Initialize
 from trezor.messages.Success import Success
 
 from apps.common import storage, cache
@@ -10,7 +11,7 @@ from apps.common import storage, cache
 
 async def respond_Features(ctx, msg):
 
-    if msg.__qualname__ == 'Initialize':
+    if isinstance(msg, Initialize):
         if msg.state is None or bytes(msg.state) != cache.get_state(state=bytes(msg.state)):
             cache.clear()
 

src/apps/wallet/sign_tx/__init__.py

@@ -1,7 +1,7 @@
 from trezor import ui, wire
-from trezor.messages.RequestType import TXFINISHED
 from trezor.messages.wire_types import TxAck
 from apps.common import seed
+from apps.wallet.sign_tx.helpers import *
 
 
 @ui.layout
@@ -26,17 +26,17 @@ async def sign_tx(ctx, msg):
             raise wire.Error(*e.args)
         except signing.Bip143Error as e:
             raise wire.Error(*e.args)
-        if req.__qualname__ == 'TxRequest':
+        if isinstance(req, TxRequest):
             if req.request_type == TXFINISHED:
                 break
             res = await ctx.call(req, TxAck)
-        elif req.__qualname__ == 'UiConfirmOutput':
+        elif isinstance(req, UiConfirmOutput):
             res = await layout.confirm_output(ctx, req.output, req.coin)
             progress.report_init()
-        elif req.__qualname__ == 'UiConfirmTotal':
+        elif isinstance(req, UiConfirmTotal):
             res = await layout.confirm_total(ctx, req.spending, req.fee, req.coin)
             progress.report_init()
-        elif req.__qualname__ == 'UiConfirmFeeOverThreshold':
+        elif isinstance(req, UiConfirmFeeOverThreshold):
             res = await layout.confirm_feeoverthreshold(ctx, req.fee, req.coin)
             progress.report_init()
         else: