qt: (trivial) some type hints

electrum/gui/qt/address_dialog.py

@@ -23,25 +23,32 @@
 # CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 # SOFTWARE.
 
-from electrum.i18n import _
+from typing import TYPE_CHECKING
 
 from PyQt5.QtWidgets import QVBoxLayout, QLabel
 
+from electrum.i18n import _
+
 from .util import WindowModalDialog, ButtonsLineEdit, ColorScheme, Buttons, CloseButton
 from .history_list import HistoryList, HistoryModel
 from .qrtextedit import ShowQRTextEdit
 
+if TYPE_CHECKING:
+    from .main_window import ElectrumWindow
+
+
 class AddressHistoryModel(HistoryModel):
-    def __init__(self, parent, address):
+    def __init__(self, parent: 'ElectrumWindow', address):
         super().__init__(parent)
         self.address = address
 
     def get_domain(self):
         return [self.address]
 
+
 class AddressDialog(WindowModalDialog):
 
-    def __init__(self, parent, address):
+    def __init__(self, parent: 'ElectrumWindow', address: str):
         WindowModalDialog.__init__(self, parent, _("Address"))
         self.address = address
         self.parent = parent

electrum/gui/qt/history_list.py

@@ -52,6 +52,7 @@ from .util import (read_QIcon, MONOSPACE_FONT, Buttons, CancelButton, OkButton,
 
 if TYPE_CHECKING:
     from electrum.wallet import Abstract_Wallet
+    from .main_window import ElectrumWindow
 
 
 _logger = get_logger(__name__)
@@ -107,7 +108,7 @@ def get_item_key(tx_item):
 
 class HistoryModel(QAbstractItemModel, Logger):
 
-    def __init__(self, parent):
+    def __init__(self, parent: 'ElectrumWindow'):
         QAbstractItemModel.__init__(self, parent)
         Logger.__init__(self)
         self.parent = parent

electrum/gui/qt/transaction_dialog.py

@@ -73,7 +73,7 @@ def show_transaction(tx, parent, desc=None, prompt_if_unsaved=False):
 
 class TxDialog(QDialog, MessageBoxMixin):
 
-    def __init__(self, tx, parent, desc, prompt_if_unsaved):
+    def __init__(self, tx: Transaction, parent: 'ElectrumWindow', desc, prompt_if_unsaved):
         '''Transactions in the wallet will show their description.
         Pass desc to give a description for txs not yet in the wallet.
         '''
@@ -82,12 +82,12 @@ class TxDialog(QDialog, MessageBoxMixin):
         # Take a copy; it might get updated in the main window by
         # e.g. the FX plugin.  If this happens during or after a long
         # sign operation the signatures are lost.
-        self.tx = tx = copy.deepcopy(tx)  # type: Transaction
+        self.tx = tx = copy.deepcopy(tx)
         try:
             self.tx.deserialize()
         except BaseException as e:
             raise SerializationError(e)
-        self.main_window = parent  # type: ElectrumWindow
+        self.main_window = parent
         self.wallet = parent.wallet
         self.prompt_if_unsaved = prompt_if_unsaved
         self.saved = False