cleanup six (no python2 support)

lib/coinchooser.py

@@ -27,7 +27,6 @@ from __future__ import division
 from __future__ import print_function
 from __future__ import unicode_literals
 
-import six
 from collections import defaultdict, namedtuple
 from math import floor, log10
 

lib/commands.py

@@ -27,7 +27,6 @@ from __future__ import division
 from __future__ import print_function
 from __future__ import unicode_literals
 
-import six
 import os
 import sys
 import datetime
@@ -48,8 +47,7 @@ from .transaction import Transaction
 from .import paymentrequest
 from .paymentrequest import PR_PAID, PR_UNPAID, PR_UNKNOWN, PR_EXPIRED
 from .import contacts
-if six.PY3:
-    long = int
+
 known_commands = {}
 
 
@@ -739,7 +737,7 @@ arg_types = {
     'num': int,
     'nbits': int,
     'imax': int,
-    'entropy': long,
+    'entropy': int,
     'tx': tx_from_str,
     'pubkeys': json_loads,
     'jsontx': json_loads,

lib/contacts.py

@@ -25,7 +25,6 @@ from __future__ import division
 from __future__ import print_function
 from __future__ import unicode_literals
 
-import six
 
 import sys
 import re

lib/daemon.py

@@ -27,7 +27,6 @@ from __future__ import division
 from __future__ import print_function
 from __future__ import unicode_literals
 
-import six
 import ast
 import os
 import sys

lib/dnssec.py

@@ -27,7 +27,6 @@ from __future__ import division
 from __future__ import print_function
 from __future__ import unicode_literals
 
-import six
 
 
 # Check DNSSEC trust chain.
@@ -75,7 +74,7 @@ def python_validate_rrsig(rrset, rrsig, keys, origin=None, now=None):
     from dns.dnssec import ValidationFailure, ECDSAP256SHA256, ECDSAP384SHA384
     from dns.dnssec import _find_candidate_keys, _make_hash, _is_ecdsa, _is_rsa, _to_rdata, _make_algorithm_id
 
-    if isinstance(origin, six.text_type):
+    if isinstance(origin, str):
         origin = dns.name.from_text(origin, dns.name.root)
 
     for candidate_key in _find_candidate_keys(keys, rrsig):

lib/exchange_rate.py

@@ -3,7 +3,6 @@ from __future__ import division
 from __future__ import print_function
 from __future__ import unicode_literals
 
-import six
 from datetime import datetime
 import inspect
 import requests

lib/i18n.py

@@ -27,19 +27,14 @@ from __future__ import division
 from __future__ import print_function
 from __future__ import unicode_literals
 
-import gettext, os, six
+import gettext, os
 
 LOCALE_DIR = os.path.join(os.path.dirname(__file__), 'locale')
 language = gettext.translation('electrum', LOCALE_DIR, fallback = True)
 
-if six.PY2:
-    def _(x):
-        global language
-        return language.ugettext(x)
-else:
-    def _(x):
-        global language
-        return language.gettext(x)
+def _(x):
+    global language
+    return language.gettext(x)
 
 def set_language(x):
     global language

lib/interface.py

@@ -27,7 +27,6 @@ from __future__ import division
 from __future__ import print_function
 from __future__ import unicode_literals
 
-import six
 import os
 import re
 import socket

lib/mnemonic.py

@@ -27,7 +27,6 @@ from __future__ import division
 from __future__ import print_function
 from __future__ import unicode_literals
 
-import six
 
 import os
 import hmac

lib/msqr.py

@@ -3,7 +3,6 @@ from __future__ import division
 from __future__ import print_function
 from __future__ import unicode_literals
 
-import six
 # from http://eli.thegreenplace.net/2009/03/07/computing-modular-square-roots-in-python/
 
 def modular_sqrt(a, p):

lib/network.py

@@ -25,9 +25,8 @@ from __future__ import division
 from __future__ import print_function
 from __future__ import unicode_literals
 
-import six
 import time
-from six.moves import queue
+import queue
 import os
 import errno
 import sys

lib/old_mnemonic.py

@@ -27,7 +27,6 @@ from __future__ import division
 from __future__ import print_function
 from __future__ import unicode_literals
 
-import six
 
 # list of words from http://en.wiktionary.org/wiki/Wiktionary:Frequency_lists/Contemporary_poetry
 

lib/paymentrequest.py

@@ -27,7 +27,6 @@ from __future__ import division
 from __future__ import print_function
 from __future__ import unicode_literals
 
-import six
 import hashlib
 import os.path
 import re
@@ -38,7 +37,7 @@ import traceback
 import json
 import requests
 
-from six.moves import urllib_parse
+import urllib.parse
 
 
 try:
@@ -78,7 +77,7 @@ PR_PAID    = 3     # send and propagated
 
 
 def get_payment_request(url):
-    u = urllib_parse.urlparse(url)
+    u = urllib.parse.urlparse(url)
     error = None
     if u.scheme in ['http', 'https']:
         try:
@@ -277,7 +276,7 @@ class PaymentRequest:
         ref_out.script = transaction.Transaction.pay_script(TYPE_ADDRESS, refund_addr)
         paymnt.memo = "Paid using Electrum"
         pm = paymnt.SerializeToString()
-        payurl = urllib_parse.urlparse(pay_det.payment_url)
+        payurl = urllib.parse.urlparse(pay_det.payment_url)
         try:
             r = requests.post(payurl.geturl(), data=pm, headers=ACK_HEADERS, verify=ca_path)
         except requests.exceptions.SSLError:

lib/pem.py

@@ -27,7 +27,6 @@ from __future__ import division
 from __future__ import print_function
 from __future__ import unicode_literals
 
-import six
 
 # This module uses code from TLSLlite
 # TLSLite Author: Trevor Perrin)

lib/rsakey.py

@@ -38,7 +38,6 @@ from __future__ import division
 from __future__ import print_function
 from __future__ import unicode_literals
 
-import six
 import os
 import math
 import base64

lib/simple_config.py

@@ -3,7 +3,6 @@ from __future__ import division
 from __future__ import print_function
 from __future__ import unicode_literals
 
-import six
 import ast
 import json
 import threading
@@ -257,13 +256,7 @@ def read_system_config(path=SYSTEM_CONFIG_PATH):
     """Parse and return the system config settings in /etc/electrum.conf."""
     result = {}
     if os.path.exists(path):
-        try:
-            from six.moves import configparser
-            # import ConfigParser
-        except ImportError:
-            print("cannot parse electrum.conf. please install ConfigParser")
-            return
-
+        import configparser
         p = configparser.ConfigParser()
         try:
             p.read(path)

lib/synchronizer.py

@@ -27,7 +27,6 @@ from __future__ import division
 from __future__ import print_function
 from __future__ import unicode_literals
 
-import six
 from threading import Lock
 import hashlib
 

lib/transaction.py

@@ -41,7 +41,6 @@ import struct
 # Workalike python implementation of Bitcoin's CDataStream class.
 #
 import struct
-from six import StringIO
 import random
 from .keystore import xpubkey_to_address, xpubkey_to_pubkey
 

lib/util.py

@@ -36,14 +36,9 @@ import threading
 
 from .i18n import _
 
-import six
-from six.moves import queue, urllib_parse
 
-try:
-    import urllib.parse
-    import urllib.request, urllib.parse, urllib.error
-except ImportError:
-    pass
+import urllib.request, urllib.parse, urllib.error
+import queue
 
 base_units = {'BTC':8, 'mBTC':5, 'uBTC':2}
 fee_levels = [_('Within 25 blocks'), _('Within 10 blocks'), _('Within 5 blocks'), _('Within 2 blocks'), _('In the next block')]
@@ -254,18 +249,9 @@ def assert_bytes(*args):
     """
     porting helper, assert args type
     """
-    if six.PY2:
-        for x in args:
-            assert isinstance(x, (bytes, bytearray, str))
-        return
-
     try:
-        if six.PY3:
-            for x in args:
-                assert isinstance(x, (bytes, bytearray))
-        else:
-            for x in args:
-                assert isinstance(x, bytearray)
+        for x in args:
+            assert isinstance(x, (bytes, bytearray))
     except:
         print('assert bytes failed', list(map(type, args)))
         raise
@@ -276,7 +262,7 @@ def assert_str(*args):
     porting helper, assert args type
     """
     for x in args:
-        assert isinstance(x, six.string_types)
+        assert isinstance(x, str)
 
 
 
@@ -310,11 +296,8 @@ def hfu(x):
     :param x: str
     :return: str
     """
-    if six.PY3:
-        assert_bytes(x)
-        return binascii.hexlify(x)
-    else:
-        return x.encode('hex')
+    assert_bytes(x)
+    return binascii.hexlify(x)
 
 
 def bfh(x):
@@ -323,7 +306,7 @@ def bfh(x):
     :param x: str
     :rtype: bytes
     """
-    if isinstance(x, six.string_types):
+    if isinstance(x, str):
         return bfh_builder(x)
     # TODO: check for iterator interface
     elif isinstance(x, (list, tuple, map)):
@@ -340,15 +323,8 @@ def bh2u(x):
     :param x: bytes
     :rtype: str
     """
-    if six.PY3:
-        assert_bytes(x)
-        # x = to_bytes(x, 'ascii')
-        return binascii.hexlify(x).decode('ascii')
-    else:
-        if isinstance(x, bytearray):
-            return binascii.hexlify(x)
-        else:
-            return x.encode('hex')
+    assert_bytes(x)
+    return binascii.hexlify(x).decode('ascii')
 
 
 def user_dir():
@@ -392,8 +368,6 @@ def format_satoshis(x, is_diff=False, num_zeros = 0, decimal_point = 8, whitespa
     if whitespaces:
         result += " " * (decimal_point - len(fract_part))
         result = " " * (15 - len(result)) + result
-    if six.PY2:
-        result = result.decode('utf8')
     return result
 
 def timestamp_to_datetime(timestamp):
@@ -529,7 +503,7 @@ def parse_URI(uri, on_pr=None):
             raise BaseException("Not a bitcoin address")
         return {'address': uri}
 
-    u = urllib_parse.urlparse(uri)
+    u = urllib.parse.urlparse(uri)
     if u.scheme != 'bitcoin':
         raise BaseException("Not a bitcoin URI")
     address = u.path
@@ -537,9 +511,9 @@ def parse_URI(uri, on_pr=None):
     # python for android fails to parse query
     if address.find('?') > 0:
         address, query = u.path.split('?')
-        pq = urllib_parse.parse_qs(query)
+        pq = urllib.parse.parse_qs(query)
     else:
-        pq = urllib_parse.parse_qs(u.query)
+        pq = urllib.parse.parse_qs(u.query)
 
     for k, v in pq.items():
         if len(v)!=1:
@@ -560,10 +534,7 @@ def parse_URI(uri, on_pr=None):
             amount = Decimal(am) * COIN
         out['amount'] = int(amount)
     if 'message' in out:
-        if six.PY3:
-            out['message'] = out['message']
-        else:
-            out['message'] = out['message'].decode('utf8')
+        out['message'] = out['message']
         out['memo'] = out['message']
     if 'time' in out:
         out['time'] = int(out['time'])
@@ -600,11 +571,9 @@ def create_URI(addr, amount, message):
     if amount:
         query.append('amount=%s'%format_satoshis_plain(amount))
     if message:
-        if six.PY2 and type(message) == unicode:
-            message = message.encode('utf8')
         query.append('message=%s'%urllib.parse.quote(message))
-    p = urllib_parse.ParseResult(scheme='bitcoin', netloc='', path=addr, params='', query='&'.join(query), fragment='')
-    return urllib_parse.urlunparse(p)
+    p = urllib.parse.ParseResult(scheme='bitcoin', netloc='', path=addr, params='', query='&'.join(query), fragment='')
+    return urllib.parse.urlunparse(p)
 
 
 # Python bug (http://bugs.python.org/issue1927) causes raw_input
@@ -615,14 +584,9 @@ def raw_input(prompt=None):
         sys.stdout.write(prompt)
     return builtin_raw_input()
 
-if six.PY2:
-    import  __builtin__
-    builtin_raw_input = __builtin__.raw_input
-    __builtin__.raw_input = raw_input
-else:
-    import builtins
-    builtin_raw_input = builtins.input
-    builtins.input = raw_input
+import builtins
+builtin_raw_input = builtins.input
+builtins.input = raw_input
 
 
 def parse_json(message):
@@ -772,7 +736,7 @@ def check_www_dir(rdir):
         "https://code.jquery.com/ui/1.10.3/themes/smoothness/jquery-ui.css"
     ]
     for URL in files:
-        path = urllib_parse.urlsplit(URL).path
+        path = urllib.parse.urlsplit(URL).path
         filename = os.path.basename(path)
         path = os.path.join(rdir, filename)
         if not os.path.exists(path):

lib/websockets.py

@@ -27,8 +27,7 @@ from __future__ import division
 from __future__ import print_function
 from __future__ import unicode_literals
 
-import six
-from six.moves import queue
+import queue
 import threading, os, json, time
 from collections import defaultdict
 try:

lib/x509.py

@@ -27,7 +27,6 @@ from __future__ import division
 from __future__ import print_function
 from __future__ import unicode_literals
 
-import six
 from datetime import datetime
 import sys
 from . import util