fix style

.flake8

@@ -9,4 +9,8 @@ ignore =
     # E402: module level import not at top of file
     E402,
     # E501: line too long
-    E501
+    E501,
+    # F403: star import used, unable to detect undefined names
+    F403,
+    # F405: name may be undefined, or defined from star imports
+    F405

src/apps/common/request_pin.py

@@ -8,6 +8,7 @@ if __debug__:
 DEFAULT_CANCEL = res.load(ui.ICON_CLEAR)
 DEFAULT_LOCK = res.load(ui.ICON_LOCK)
 
+
 @unimport
 async def request_pin_on_display(ctx: wire.Context, code: int=None) -> str:
     from trezor.messages.ButtonRequest import ButtonRequest

src/trezor/ui/confirm.py

@@ -10,6 +10,7 @@ CANCELLED = const(2)
 DEFAULT_CONFIRM = res.load(ui.ICON_CONFIRM)
 DEFAULT_CANCEL = res.load(ui.ICON_CLEAR)
 
+
 class ConfirmDialog(Widget):
 
     def __init__(self, content, confirm=DEFAULT_CONFIRM, cancel=DEFAULT_CANCEL):