fix pylint warnings

mnemonic_check.py

@@ -1,5 +1,8 @@
 #!/usr/bin/env python
 from __future__ import print_function
+import binascii
+import hashlib
+import mnemonic
 
 __doc__ = '''
     Use this script to cross-check that TREZOR generated valid
@@ -13,10 +16,6 @@ __doc__ = '''
     without an internet connection).
 '''
 
-import binascii
-import hashlib
-import mnemonic
-
 # Python2 vs Python3
 try:
     input = raw_input

tests/common.py

@@ -1,10 +1,9 @@
 from __future__ import print_function
 
 import unittest
-import config
-
 from trezorlib.client import TrezorDebugClient
 from trezorlib.tx_api import TXAPIBitcoin
+import config
 
 class TrezorTest(unittest.TestCase):
     def setUp(self):

trezorctl

@@ -80,7 +80,7 @@ def get_transport(transport_string, path, **kwargs):
         from trezorlib.transport_fake import FakeTransport
         return FakeTransport(path, **kwargs)
 
-    raise NotImplemented("Unknown transport")
+    raise NotImplementedError("Unknown transport")
 
 class Commands(object):
     def __init__(self, client):
@@ -159,11 +159,13 @@ class Commands(object):
         if args.mnemonic:
             mnemonic = ' '.join(args.mnemonic)
             return self.client.load_device_by_mnemonic(mnemonic, args.pin,
-                        args.passphrase_protection, args.label, 'english', args.skip_checksum)
-
+                                                       args.passphrase_protection,
+                                                       args.label, 'english',
+                                                       args.skip_checksum)
         else:
             return self.client.load_device_by_xprv(args.xprv, args.pin,
-                        args.passphrase_protection, args.label, 'english')
+                                                   args.passphrase_protection,
+                                                   args.label, 'english')
 
     def reset_device(self, args):
         return self.client.reset_device(True, args.strength, args.passphrase_protection,

trezorlib/protobuf_json.py

@@ -37,15 +37,14 @@ Provide serialization and de-serialization of Google's protobuf Messages into/fr
 # Note that preservation of unknown fields is currently not available for Python (c) google docs
 # extensions is not supported from 0.0.5 (due to gpb2.3 changes)
 
-__version__='0.0.5'
-__author__='Paul Dovbush <dpp@dpp.su>'
-
-
 import json
 from google.protobuf.descriptor import FieldDescriptor as FD
 import binascii
 from . import types_pb2 as types
 
+__version__ = '0.0.5'
+__author__ = 'Paul Dovbush <dpp@dpp.su>'
+
 class ParseError(Exception): pass
 
 

trezorlib/qt/pinmatrix.py

@@ -1,8 +1,6 @@
 from __future__ import print_function
-
 import sys
 import math
-import operator
 from PyQt4.QtGui import (QPushButton, QLineEdit, QSizePolicy, QRegExpValidator, QLabel,
                          QApplication, QWidget, QGridLayout, QVBoxLayout, QHBoxLayout)
 from PyQt4.QtCore import QObject, SIGNAL, QRegExp, Qt

trezorlib/transport.py

@@ -77,7 +77,7 @@ class Transport(object):
             return None
 
         data = self._read()
-        if data == None:
+        if data is None:
             return None
 
         return self._parse_message(data)

trezorlib/transport_bridge.py

@@ -1,9 +1,8 @@
 '''BridgeTransport implements transport TREZOR Bridge (aka trezord).'''
 
-import requests
 import json
+import requests
 from . import protobuf_json
-from . import mapping
 from . import messages_pb2 as proto
 from .transport import Transport
 
@@ -21,7 +20,7 @@ class BridgeTransport(Transport):
 
         self.session = None
         self.response = None
-        self.conn = requests.Session();
+        self.conn = requests.Session()
 
         super(BridgeTransport, self).__init__(device, *args, **kwargs)
 
@@ -81,7 +80,7 @@ class BridgeTransport(Transport):
             self.response = r.json()
 
     def _read(self):
-        if self.response == None:
+        if self.response is None:
             raise Exception('No response stored')
         cls = getattr(proto, self.response['type'])
         inst = cls()

trezorlib/transport_pipe.py

@@ -1,12 +1,11 @@
 from __future__ import print_function
-
-'''PipeTransport implements fake wire transport over local named pipe.
-Use this transport for talking with trezor simulator.'''
-
 import os
 from select import select
 from .transport import Transport
 
+"""PipeTransport implements fake wire transport over local named pipe.
+Use this transport for talking with trezor simulator."""
+
 class PipeTransport(Transport):
     def __init__(self, device, is_device, *args, **kwargs):
         self.is_device = is_device # Set True if act as device

trezorlib/transport_serial.py

@@ -4,8 +4,8 @@ from __future__ import print_function
 
 # Local serial port loopback: socat PTY,link=COM8 PTY,link=COM9
 
-import serial
 from select import select
+import serial
 from .transport import Transport
 
 class SerialTransport(Transport):

trezorlib/tx_api.py

@@ -1,17 +1,19 @@
 import binascii
-import json
 from decimal import Decimal
 # from filecache import filecache, DAY
-from . import types_pb2 as proto_types
 import requests
+from . import types_pb2 as proto_types
 
-def insight_tx(url, rawdata=False):
-    if not rawdata:
+def fetch_json(url):
     try:
         r = requests.get(url, headers={'User-agent': 'Mozilla/5.0'})
-            data = r.json()
+        return r.json()
     except:
         raise Exception('URL error: %s' % url)
+
+def insight_tx(url, rawdata=False):
+    if not rawdata:
+        data = fetch_json(url)
     else:
         data = url
 
@@ -42,11 +44,7 @@ def insight_tx(url, rawdata=False):
 
 def smartbit_tx(url, rawdata=False):
     if not rawdata:
-        try:
-            r = requests.get(url, headers = {'User-agent': 'Mozilla/5.0'})
-            data = r.json()
-        except:
-            raise Exception('URL error: %s' % url)
+        data = fetch_json(url)
     else:
         data = url