updates for python3

gui/kivy/i18n.py

@@ -1,6 +1,6 @@
 import gettext
 
-class _(unicode):
+class _(str):
 
     observers = set()
     lang = None
@@ -15,9 +15,7 @@ class _(unicode):
 
     @staticmethod
     def translate(s, *args, **kwargs):
-        tr = _.lang(s).format(args, kwargs)
-        tr = tr.decode('utf8')
-        return tr
+        return _.lang(s).format(args, kwargs)
 
     @staticmethod
     def bind(label):

gui/qt/__init__.py

@@ -57,6 +57,7 @@ except Exception as e:
 
 from .util import *   # * needed for plugins
 from .main_window import ElectrumWindow
+from .network_dialog import NetworkDialog
 
 
 class OpenFileEventFilter(QObject):
@@ -142,7 +143,6 @@ class ElectrumGui:
         self.app.emit(SIGNAL('new_window'), path, uri)
 
     def show_network_dialog(self, parent):
-        from network_dialog import NetworkDialog
         if not self.daemon.network:
             parent.show_warning(_('You are using Electrum in offline mode; restart Electrum if you want to get connected'), title=_('Offline'))
             return

gui/qt/contact_list.py

@@ -59,7 +59,7 @@ class ContactList(MyTreeWidget):
 
     def import_contacts(self):
         wallet_folder = self.parent.get_wallet_folder()
-        filename = unicode(QFileDialog.getOpenFileName(self.parent, "Select your wallet file", wallet_folder))
+        filename = QFileDialog.getOpenFileName(self.parent, "Select your wallet file", wallet_folder)
         if not filename:
             return
         self.parent.contacts.import_file(filename)

gui/qt/installwizard.py

@@ -181,8 +181,7 @@ class InstallWizard(QDialog, MessageBoxMixin, BaseWizard):
                 self.name_e.setText(path)
 
         def on_filename(filename):
-            filename = unicode(filename)
-            path = os.path.join(wallet_folder, filename.encode('utf8'))
+            path = os.path.join(wallet_folder, filename)
             try:
                 self.storage = WalletStorage(path)
             except IOError:
@@ -213,7 +212,7 @@ class InstallWizard(QDialog, MessageBoxMixin, BaseWizard):
         button.clicked.connect(on_choose)
         self.name_e.textChanged.connect(on_filename)
         n = os.path.basename(self.storage.path)
-        self.name_e.setText(n.decode('utf8'))
+        self.name_e.setText(n)
 
         while True:
             if self.storage.file_exists() and not self.storage.is_encrypted():

gui/qt/invoice_list.py

@@ -64,7 +64,7 @@ class InvoiceList(MyTreeWidget):
 
     def import_invoices(self):
         wallet_folder = self.parent.get_wallet_folder()
-        filename = unicode(QFileDialog.getOpenFileName(self.parent, "Select your wallet file", wallet_folder))
+        filename = QFileDialog.getOpenFileName(self.parent, "Select your wallet file", wallet_folder)
         if not filename:
             return
         self.parent.invoices.import_file(filename)

gui/qt/main_window.py

@@ -356,7 +356,7 @@ class ElectrumWindow(QMainWindow, MessageBoxMixin, PrintError):
 
     def watching_only_changed(self):
         title = 'Electrum %s  -  %s' % (self.wallet.electrum_version,
-                                        self.wallet.basename().decode('utf8'))
+                                        self.wallet.basename())
         extra = [self.wallet.storage.get('wallet_type', '?')]
         if self.wallet.is_watching_only():
             self.warn_if_watching_only()
@@ -401,7 +401,6 @@ class ElectrumWindow(QMainWindow, MessageBoxMixin, PrintError):
                 self.show_critical(_("Electrum was unable to copy your wallet file to the specified location.") + "\n" + str(reason), title=_("Unable to create backup"))
 
     def update_recently_visited(self, filename):
-        filename = filename.decode('utf8')
         recent = self.config.get('recently_open', [])
         try:
             sorted(recent)
@@ -416,7 +415,7 @@ class ElectrumWindow(QMainWindow, MessageBoxMixin, PrintError):
         for i, k in enumerate(sorted(recent)):
             b = os.path.basename(k)
             def loader(k):
-                return lambda: self.gui_object.new_window(k.encode('utf8'))
+                return lambda: self.gui_object.new_window(k)
             self.recently_visited_menu.addAction(b, loader(k)).setShortcut(QKeySequence("Ctrl+%d"%(i+1)))
         self.recently_visited_menu.setEnabled(len(recent))
 
@@ -702,7 +701,7 @@ class ElectrumWindow(QMainWindow, MessageBoxMixin, PrintError):
             text = _("Not connected")
             icon = QIcon(":icons/status_disconnected.png")
 
-        self.tray.setToolTip("%s (%s)" % (text, self.wallet.basename().decode('utf8')))
+        self.tray.setToolTip("%s (%s)" % (text, self.wallet.basename()))
         self.balance_label.setText(text)
         self.status_button.setIcon( icon )
 
@@ -2009,7 +2008,7 @@ class ElectrumWindow(QMainWindow, MessageBoxMixin, PrintError):
         d.exec_()
 
     def password_dialog(self, msg=None, parent=None):
-        from password_dialog import PasswordDialog
+        from .password_dialog import PasswordDialog
         parent = parent or self
         d = PasswordDialog(parent, msg)
         return d.run()
@@ -2378,7 +2377,7 @@ class ElectrumWindow(QMainWindow, MessageBoxMixin, PrintError):
         if not self.config.is_modifiable('language'):
             for w in [lang_combo, lang_label]: w.setEnabled(False)
         def on_lang(x):
-            lang_request = languages.keys()[lang_combo.currentIndex()]
+            lang_request = list(languages.keys())[lang_combo.currentIndex()]
             if lang_request != self.config.get('language'):
                 self.config.set_key("language", lang_request, True)
                 self.need_restart = True

gui/qt/password_dialog.py

@@ -217,4 +217,4 @@ class PasswordDialog(WindowModalDialog):
     def run(self):
         if not self.exec_():
             return
-        return unicode(self.pw.text())
+        return self.pw.text()

lib/base_wizard.py

@@ -74,7 +74,7 @@ class BaseWizard(object):
 
     def new(self):
         name = os.path.basename(self.storage.path)
-        title = _("Create") + ' ' + name.decode('utf8')
+        title = _("Create") + ' ' + name
         message = '\n'.join([
             _("What kind of wallet do you want to create?")
         ])

lib/blockchain.py

@@ -39,7 +39,7 @@ def serialize_header(res):
     return s
 
 def deserialize_header(s, height):
-    hex_to_int = lambda s: int('0x' + s[::-1].encode('hex'), 16)
+    hex_to_int = lambda s: int('0x' + bh2u(s[::-1]), 16)
     h = {}
     h['version'] = hex_to_int(s[0:4])
     h['prev_block_hash'] = hash_encode(s[4:36])
@@ -55,7 +55,7 @@ def hash_header(header):
         return '0' * 64
     if header.get('prev_block_hash') is None:
         header['prev_block_hash'] = '00'*32
-    return hash_encode(Hash(serialize_header(header).decode('hex')))
+    return hash_encode(Hash(bfh(serialize_header(header))))
 
 
 blockchains = {}
@@ -107,7 +107,7 @@ class Blockchain(util.PrintError):
         return blockchains[self.parent_id]
 
     def get_max_child(self):
-        children = filter(lambda y: y.parent_id==self.checkpoint, blockchains.values())
+        children = list(filter(lambda y: y.parent_id==self.checkpoint, blockchains.values()))
         return max([x.checkpoint for x in children]) if children else None
 
     def get_checkpoint(self):
@@ -141,7 +141,7 @@ class Blockchain(util.PrintError):
 
     def update_size(self):
         p = self.path()
-        self._size = os.path.getsize(p)/80 if os.path.exists(p) else 0
+        self._size = os.path.getsize(p)//80 if os.path.exists(p) else 0
 
     def verify_header(self, header, prev_header, bits, target):
         prev_hash = hash_header(prev_header)
@@ -230,7 +230,7 @@ class Blockchain(util.PrintError):
 
     def save_header(self, header):
         delta = header.get('block_height') - self.checkpoint
-        data = serialize_header(header).decode('hex')
+        data = bfh(serialize_header(header))
         assert delta == self.size()
         assert len(data) == 80
         self.write(data, delta*80)
@@ -309,7 +309,7 @@ class Blockchain(util.PrintError):
         prev_hash = hash_header(previous_header)
         if prev_hash != header.get('prev_block_hash'):
             return False
-        bits, target = self.get_target(height / 2016)
+        bits, target = self.get_target(height // 2016)
         try:
             self.verify_header(header, previous_header, bits, target)
         except:

lib/commands.py

@@ -232,7 +232,7 @@ class Commands:
             elif txin.get('redeemScript'):
                 raise BaseException('Not implemented')
 
-        outputs = map(lambda x: (TYPE_ADDRESS, x['address'], int(x['value'])), outputs)
+        outputs = [(TYPE_ADDRESS, x['address'], int(x['value'])) for x in outputs]
         tx = Transaction.from_io(inputs, outputs, locktime=locktime)
         tx.sign(keypairs)
         return tx.as_dict()

lib/exchange_rate.py

@@ -170,7 +170,7 @@ class BitStamp(ExchangeBase):
 class Bitvalor(ExchangeBase):
 
     def get_rates(self,ccy):
-	json = self.get_json('api.bitvalor.com', '/v1/ticker.json')
+        json = self.get_json('api.bitvalor.com', '/v1/ticker.json')
         return {'BRL': Decimal(json['ticker_1h']['total']['last'])}
 
 
@@ -253,7 +253,7 @@ class Coinsecure(ExchangeBase):
 class Foxbit(ExchangeBase):
 
     def get_rates(self,ccy):
-	json = self.get_json('api.bitvalor.com', '/v1/ticker.json')
+        json = self.get_json('api.bitvalor.com', '/v1/ticker.json')
         return {'BRL': Decimal(json['ticker_1h']['exchanges']['FOX']['last'])}
 
 
@@ -297,7 +297,7 @@ class MercadoBitcoin(ExchangeBase):
 class NegocieCoins(ExchangeBase):
 
     def get_rates(self,ccy):
-	json = self.get_json('api.bitvalor.com', '/v1/ticker.json')
+        json = self.get_json('api.bitvalor.com', '/v1/ticker.json')
         return {'BRL': Decimal(json['ticker_1h']['exchanges']['NEG']['last'])}
 
     def history_ccys(self):

lib/keystore.py

@@ -544,7 +544,7 @@ class Hardware_KeyStore(KeyStore, Xpub):
 
 
 def bip39_normalize_passphrase(passphrase):
-    return normalize('NFKD', unicode(passphrase or ''))
+    return normalize('NFKD', passphrase or '')
 
 def bip39_to_seed(mnemonic, passphrase):
     import pbkdf2, hashlib, hmac

lib/network.py

@@ -517,7 +517,7 @@ class Network(util.DaemonThread):
         if self.server_is_lagging() and self.auto_connect:
             # switch to one that has the correct header (not height)
             header = self.blockchain().read_header(self.get_local_height())
-            filtered = map(lambda x:x[0], filter(lambda x: x[1].tip_header==header, self.interfaces.items()))
+            filtered = list(map(lambda x:x[0], filter(lambda x: x[1].tip_header==header, self.interfaces.items())))
             if filtered:
                 choice = random.choice(filtered)
                 self.switch_to_interface(choice)
@@ -1047,7 +1047,7 @@ class Network(util.DaemonThread):
     def get_blockchains(self):
         out = {}
         for k, b in self.blockchains.items():
-            r = filter(lambda i: i.blockchain==b, self.interfaces.values())
+            r = list(filter(lambda i: i.blockchain==b, self.interfaces.values()))
             if r:
                 out[k] = r
         return out

lib/simple_config.py

@@ -225,7 +225,7 @@ class SimpleConfig(PrintError):
 
     def reverse_dynfee(self, fee_per_kb):
         import operator
-        l = self.fee_estimates.items() + [(1, self.dynfee(4))]
+        l = list(self.fee_estimates.items()) + [(1, self.dynfee(4))]
         dist = map(lambda x: (x[0], abs(x[1] - fee_per_kb)), l)
         min_target, min_value = min(dist, key=operator.itemgetter(1))
         if fee_per_kb < self.fee_estimates.get(25)/2:

lib/storage.py

@@ -39,7 +39,7 @@ from .i18n import _
 from .util import NotEnoughFunds, PrintError, profiler
 from .plugins import run_hook, plugin_loaders
 from .keystore import bip44_derivation
-import .bitcoin
+from . import bitcoin
 
 
 # seed_version is now used for the version of the wallet file

lib/transaction.py

@@ -286,7 +286,7 @@ def match_decoded(decoded, to_match):
 
 
 def parse_sig(x_sig):
-    return map(lambda x: None if x == NO_SIGNATURE else x, x_sig)
+    return [None if x == NO_SIGNATURE else x for x in x_sig]
 
 def safe_parse_pubkey(x):
     try:
@@ -488,7 +488,7 @@ def multisig_script(public_keys, m):
     assert m <= n
     op_m = format(opcodes.OP_1 + m - 1, 'x')
     op_n = format(opcodes.OP_1 + n - 1, 'x')
-    keylist = [op_push(len(k)/2) + k for k in public_keys]
+    keylist = [op_push(len(k)//2) + k for k in public_keys]
     return op_m + ''.join(keylist) + op_n + 'ae'
 
 

lib/util.py

@@ -65,7 +65,7 @@ class UserCancelled(Exception):
 
 class MyEncoder(json.JSONEncoder):
     def default(self, obj):
-        from transaction import Transaction
+        from .transaction import Transaction
         if isinstance(obj, Transaction):
             return obj.as_dict()
         return super(MyEncoder, self).default(obj)
@@ -497,7 +497,7 @@ testnet_block_explorers = {
 }
 
 def block_explorer_info():
-    import bitcoin
+    from . import bitcoin
     return testnet_block_explorers if bitcoin.TESTNET else mainnet_block_explorers
 
 def block_explorer(config):

lib/wallet.py

@@ -60,6 +60,8 @@ from .mnemonic import Mnemonic
 
 from . import paymentrequest
 from .paymentrequest import PR_PAID, PR_UNPAID, PR_UNKNOWN, PR_EXPIRED
+from .paymentrequest import InvoiceStore
+from .contacts import Contacts
 
 from .storage import WalletStorage
 

plugins/cosigner_pool/qt.py

@@ -36,6 +36,7 @@ from electrum import transaction
 from electrum.plugins import BasePlugin, hook
 from electrum.i18n import _
 from electrum.wallet import Multisig_Wallet
+from electrum.util import bh2u
 
 from electrum_gui.qt.transaction_dialog import show_transaction
 
@@ -129,8 +130,8 @@ class Plugin(BasePlugin):
         self.cosigner_list = []
         for key, keystore in wallet.keystores.items():
             xpub = keystore.get_master_public_key()
-            K = bitcoin.deserialize_xpub(xpub)[-1].encode('hex')
-            _hash = bitcoin.Hash(K).encode('hex')
+            K = bitcoin.deserialize_xpub(xpub)[-1]
+            _hash = bh2u(bitcoin.Hash(K))
             if not keystore.is_watching_only():
                 self.keys.append((key, _hash, window))
             else:

plugins/digitalbitbox/digitalbitbox.py

@@ -504,7 +504,7 @@ class DigitalBitbox_KeyStore(Hardware_KeyStore):
                 dbb_signatures.extend(reply['sign'])
             
             # Fill signatures
-            if len(dbb_signatures) <> len(tx.inputs()):
+            if len(dbb_signatures) != len(tx.inputs()):
                 raise Exception("Incorrect number of transactions signed.") # Should never occur
             for i, txin in enumerate(tx.inputs()):
                 num = txin['num_sig']
@@ -564,7 +564,7 @@ class DigitalBitboxPlugin(HW_PluginBase):
         if device.interface_number == 0 or device.usage_page == 0xffff:
             self.handler = handler
             client = self.get_dbb_device(device)
-            if client <> None:
+            if client is not None:
                 client = DigitalBitbox_Client(client)
             return client
         else:

plugins/hw_wallet/qt.py

@@ -123,7 +123,7 @@ class QtHandlerBase(QObject, PrintError):
             vbox.addWidget(pw)
             vbox.addLayout(Buttons(CancelButton(d), OkButton(d)))
             d.setLayout(vbox)
-            passphrase = unicode(pw.text()) if d.exec_() else None
+            passphrase = pw.text() if d.exec_() else None
         self.passphrase = passphrase
         self.done.set()
 
@@ -137,7 +137,7 @@ class QtHandlerBase(QObject, PrintError):
         hbox.addWidget(text)
         hbox.addStretch(1)
         dialog.exec_()  # Firmware cannot handle cancellation
-        self.word = unicode(text.text())
+        self.word = text.text()
         self.done.set()
 
     def message_dialog(self, msg, on_cancel):
@@ -180,7 +180,7 @@ class QtPluginBase(object):
     @hook
     def load_wallet(self, wallet, window):
         for keystore in wallet.get_keystores():
-            if type(keystore) != self.keystore_class:
+            if not isinstance(keystore, self.keystore_class):
                 continue
             tooltip = self.device + '\n' + (keystore.label or 'unnamed')
             cb = partial(self.show_settings_dialog, window, keystore)

plugins/keepkey/keepkey.py

@@ -14,7 +14,7 @@ class KeepKeyPlugin(TrezorCompatiblePlugin):
 
     def __init__(self, *args):
         try:
-            import client
+            from . import client
             import keepkeylib
             import keepkeylib.ckd_public
             import keepkeylib.transport_hid

plugins/labels/kivy.py

@@ -1,4 +1,4 @@
-from labels import LabelsPlugin
+from .labels import LabelsPlugin
 from electrum.plugins import hook
 
 class Plugin(LabelsPlugin):

plugins/trezor/client.py

@@ -1,5 +1,5 @@
 from trezorlib.client import proto, BaseClient, ProtocolMixin
-from clientbase import TrezorClientBase
+from .clientbase import TrezorClientBase
 
 class TrezorClient(TrezorClientBase, ProtocolMixin, BaseClient):
     def __init__(self, transport, handler, plugin):

plugins/trezor/clientbase.py

@@ -209,7 +209,7 @@ class TrezorClientBase(GuiMixin, PrintError):
         return (f.major_version, f.minor_version, f.patch_version)
 
     def atleast_version(self, major, minor=0, patch=0):
-        return cmp(self.firmware_version(), (major, minor, patch)) >= 0
+        return self.firmware_version() >= (major, minor, patch)
 
     @staticmethod
     def wrapper(func):

plugins/trezor/qt_generic.py

@@ -10,7 +10,7 @@ from ..hw_wallet.qt import QtHandlerBase, QtPluginBase
 
 from electrum.i18n import _
 from electrum.plugins import hook, DeviceMgr
-from electrum.util import PrintError, UserCancelled
+from electrum.util import PrintError, UserCancelled, bh2u
 from electrum.wallet import Wallet, Standard_Wallet
 
 PASSPHRASE_HELP_SHORT =_(
@@ -320,7 +320,7 @@ class SettingsDialog(WindowModalDialog):
         def update(features):
             self.features = features
             set_label_enabled()
-            bl_hash = features.bootloader_hash.encode('hex')
+            bl_hash = bh2u(features.bootloader_hash)
             bl_hash = "\n".join([bl_hash[:32], bl_hash[32:]])
             noyes = [_("No"), _("Yes")]
             endis = [_("Enable Passphrases"), _("Disable Passphrases")]

plugins/trezor/trezor.py

@@ -13,7 +13,7 @@ class TrezorPlugin(TrezorCompatiblePlugin):
 
     def __init__(self, *args):
         try:
-            import client
+            from . import client
             import trezorlib
             import trezorlib.ckd_public
             import trezorlib.transport_hid