PEP8-ify most of plugins/trezor

plugins/trezor/client.py

@@ -2,6 +2,7 @@ from sys import stderr
 
 from electrum.i18n import _
 
+
 class GuiMixin(object):
     # Requires: self.proto, self.device
 
@@ -53,6 +54,7 @@ class GuiMixin(object):
         word = raw_input()
         return self.proto.WordAck(word=word)
 
+
 def trezor_client_class(protocol_mixin, base_client, proto):
     '''Returns a class dynamically.'''
 

plugins/trezor/plugin.py

@@ -6,6 +6,7 @@ from electrum.i18n import _
 from electrum.plugins import BasePlugin, hook
 from electrum.transaction import deserialize, is_extended_pubkey
 
+
 class TrezorCompatiblePlugin(BasePlugin):
     # Derived classes provide:
     #

plugins/trezor/qt.py

@@ -1,6 +1,7 @@
 from plugins.trezor.qt_generic import QtPlugin
 from trezorlib.qt.pinmatrix import PinMatrixWidget
 
+
 class Plugin(QtPlugin):
     pin_matrix_widget_class = PinMatrixWidget
     icon_file = ":icons/trezor.png"

plugins/trezor/qt_generic.py

@@ -13,6 +13,7 @@ from electrum_gui.qt.util import *
 from electrum.i18n import _
 from electrum.plugins import hook
 
+
 class QtHandler:
     '''An interface between the GUI (here, QT) and the device handling
     logic for handling I/O.  This is a generic implementation of the
@@ -150,8 +151,8 @@ class QtPlugin(TrezorPlugin):
 
     @hook
     def receive_menu(self, menu, addrs):
-        if (not self.wallet.is_watching_only() and self.atleast_version(1, 3)
+        if (not self.wallet.is_watching_only() and
-            and len(addrs) == 1):
+                self.atleast_version(1, 3) and len(addrs) == 1):
             menu.addAction(_("Show on %s") % self.device,
                            lambda: self.show_address(addrs[0]))
 
@@ -175,8 +176,11 @@ class QtPlugin(TrezorPlugin):
         except BaseException as e:
             window.show_error(str(e))
             return
-        get_label = lambda: self.get_client().features.label
+
-        update_label = lambda: current_label.setText("Label: %s" % get_label())
+        def update_label():
+            label = self.get_client().features.label
+            current_label.setText("Label: %s" % label)
+
         d = WindowModalDialog(window, _("%s Settings") % self.device)
         layout = QGridLayout(d)
         layout.addWidget(QLabel(_("%s Options") % self.device), 0, 0)