URI: 
       tMerge pull request #404 from WyseNynja/flake8_electrum - electrum - Electrum Bitcoin wallet
  HTML git clone https://git.parazyd.org/electrum
   DIR Log
   DIR Files
   DIR Refs
   DIR Submodules
       ---
   DIR commit 9b247c1653640106bd63e0e359e2ccc6d9479fbd
   DIR parent 5e146b428c89b0926fc1f2b8ea10b4a0ab728af6
  HTML Author: ThomasV <thomasv1@gmx.de>
       Date:   Tue, 12 Nov 2013 22:28:11 -0800
       
       Merge pull request #404 from WyseNynja/flake8_electrum
       
       flake8 cleanup of ./electrum
       Diffstat:
         M electrum                            |     114 ++++++++++++++++---------------
       
       1 file changed, 59 insertions(+), 55 deletions(-)
       ---
   DIR diff --git a/electrum b/electrum
       t@@ -16,21 +16,22 @@
        # You should have received a copy of the GNU General Public License
        # along with this program. If not, see <http://www.gnu.org/licenses/>.
        
       -import re
       -import pkgutil
       -import sys, os, time, json
       -import optparse
       -import platform
        from decimal import Decimal
       +import json
       +import optparse
       +import os
       +import re
       +import sys
       +import time
        import traceback
        
        try:
       -    import ecdsa  
       +    import ecdsa  # todo: 'ecdsa' imported but unused
        except ImportError:
            sys.exit("Error: python-ecdsa does not seem to be installed. Try 'sudo pip install ecdsa'")
        
        try:
       -    import aes
       +    import aes  # todo: 'aes' imported but unused
        except ImportError:
            sys.exit("Error: AES does not seem to be installed. Try 'sudo pip install slowaes'")
        
       t@@ -47,7 +48,8 @@ if __builtin__.use_local_modules:
            imp.load_module('electrum', *imp.find_module('lib'))
            imp.load_module('electrum_gui', *imp.find_module('gui'))
        
       -from electrum import *
       +from electrum import *  # todo: import * is generally frowned upon. should import just what is used
       +
        
        # get password routine
        def prompt_password(prompt, confirm=True):
       t@@ -64,9 +66,10 @@ def prompt_password(prompt, confirm=True):
                password = None
            return password
        
       +
        def arg_parser():
       -    usage = "%prog [options] command" 
       -    parser = optparse.OptionParser(prog=usage, add_help_option = False)
       +    usage = "%prog [options] command"
       +    parser = optparse.OptionParser(prog=usage, add_help_option=False)
            parser.add_option("-h", "--help", action="callback", callback=print_help_cb, help="show this help text")
            parser.add_option("-g", "--gui", dest="gui", help="User interface: qt, lite, gtk, text or stdio")
            parser.add_option("-w", "--wallet", dest="wallet_path", help="wallet path (default: electrum.dat)")
       t@@ -88,6 +91,7 @@ def arg_parser():
            parser.add_option("-1", "--oneserver", action="store_true", dest="oneserver", default=False, help="connect to one server only")
            return parser
        
       +
        def print_help(parser):
            parser.print_help()
            print_msg("Type 'electrum help <command>' to see the help for a specific command")
       t@@ -95,17 +99,18 @@ def print_help(parser):
            run_command('help')
            exit(1)
        
       +
        def print_help_cb(self, opt, value, parser):
            print_help(parser)
        
       -def run_command(cmd, password = None, args = []):
       +
       +def run_command(cmd, password=None, args=[]):
            cmd_runner = Commands(wallet, network)
            func = getattr(cmd_runner, cmd)
            cmd_runner.password = password
            try:
                result = func(*args[1:])
       -    except Exception as e:
       -        import traceback
       +    except Exception:
                traceback.print_exc(file=sys.stdout)
                sys.exit(1)
        
       t@@ -124,36 +129,42 @@ if __name__ == '__main__':
        
            # config is an object passed to the various constructors (wallet, interface, gui)
            if is_android:
       -        config_options = {'portable':True, 'verbose':True, 'gui':'android', 'auto_cycle':True}
       +        config_options = {
       +            'portable': True,
       +            'verbose': True,
       +            'gui': 'android',
       +            'auto_cycle': True,
       +        }
            else:
                config_options = eval(str(options))
                for k, v in config_options.items():
       -            if v is None: config_options.pop(k)
       +            if v is None:
       +                config_options.pop(k)
        
            set_verbosity(config_options.get('verbose'))
        
            config = SimpleConfig(config_options)
        
       -    if len(args)==0:
       +    if len(args) == 0:
                url = None
                cmd = 'gui'
       -    elif len(args)==1 and re.match('^bitcoin:', args[0]):
       +    elif len(args) == 1 and re.match('^bitcoin:', args[0]):
                url = args[0]
                cmd = 'gui'
            else:
                cmd = args[0]
       -       
        
            if cmd == 'gui':
       -        gui_name = config.get('gui','classic')
       -        if gui_name in ['lite', 'classic']: gui_name = 'qt'
       +        gui_name = config.get('gui', 'classic')
       +        if gui_name in ['lite', 'classic']:
       +            gui_name = 'qt'
                try:
                    gui = __import__('electrum_gui.' + gui_name, fromlist=['electrum_gui'])
                except ImportError:
                    traceback.print_exc(file=sys.stdout)
                    sys.exit()
                    #sys.exit("Error: Unknown GUI: " + gui_name )
       -        
       +
                # network interface
                if not options.offline:
                    network = Network(config)
       t@@ -163,12 +174,12 @@ if __name__ == '__main__':
        
                gui = gui.ElectrumGui(config, network)
                gui.main(url)
       -        
       +
                if network:
                    network.stop()
        
                # we use daemon threads, their termination is enforced.
       -        # this sleep command gives them time to terminate cleanly. 
       +        # this sleep command gives them time to terminate cleanly.
                time.sleep(0.1)
                sys.exit(0)
        
       t@@ -189,11 +200,11 @@ if __name__ == '__main__':
                print_msg("Error: Wallet file not found.")
                print_msg("Type 'electrum create' to create a new wallet, or provide a path to a wallet with the -w option")
                sys.exit(0)
       -    
       +
            if cmd.name in ['create', 'restore']:
                if storage.file_exists:
                    sys.exit("Error: Remove the existing wallet first!")
       -        if options.password != None:
       +        if options.password is not None:
                    password = options.password
                else:
                    password = prompt_password("Password (hit return if you do not wish to encrypt your wallet):")
       t@@ -204,24 +215,26 @@ if __name__ == '__main__':
                if not config.get('server'):
                    config.set_key('server', pick_random_server())
        
       -        fee = options.tx_fee if options.tx_fee else raw_input("fee (default:%s):"%( str(Decimal(wallet.fee)/100000000)) )
       +        fee = options.tx_fee if options.tx_fee else raw_input("fee (default:%s):" % (str(Decimal(wallet.fee)/100000000)))
                gap = options.gap_limit if options.gap_limit else raw_input("gap limit (default 5):")
        
       -        if fee: wallet.set_fee(float(fee)*100000000)
       -        if gap: wallet.change_gap_limit(int(gap))
       +        if fee:
       +            wallet.set_fee(float(fee)*100000000)
       +        if gap:
       +            wallet.change_gap_limit(int(gap))
        
                if cmd.name == 'restore':
                    import getpass
       -            seed = getpass.getpass(prompt = "seed:", stream = None) if options.concealed else raw_input("seed:")
       +            seed = getpass.getpass(prompt="seed:", stream=None) if options.concealed else raw_input("seed:")
                    try:
                        seed.decode('hex')
                    except Exception:
                        print_error("Warning: Not hex, trying decode.")
       -                seed = mnemonic_decode( seed.split(' ') )
       +                seed = mnemonic_decode(seed.split(' '))
                    if not seed:
                        sys.exit("Error: No seed")
        
       -            wallet.init_seed( str(seed) )
       +            wallet.init_seed(str(seed))
                    wallet.save_seed()
                    if not options.offline:
                        network = Network(config)
       t@@ -243,19 +256,17 @@ if __name__ == '__main__':
                    wallet.init_seed(None)
                    wallet.save_seed()
                    wallet.synchronize()
       -            print_msg("Your wallet generation seed is:\n\"%s\""% wallet.get_mnemonic(None))
       +            print_msg("Your wallet generation seed is:\n\"%s\"" % wallet.get_mnemonic(None))
                    print_msg("Please keep it in a safe place; if you lose it, you will not be able to restore your wallet.")
        
       -        print_msg("Wallet saved in '%s'"%wallet.storage.path)
       -            
       +        print_msg("Wallet saved in '%s'" % wallet.storage.path)
       +
                if password:
                    wallet.update_password(None, password)
        
                # terminate
                sys.exit(0)
        
       -
       -
            # important warning
            if cmd.name in ['dumpprivkey', 'dumpprivkeys']:
                print_msg("WARNING: ALL your private keys are secret.")
       t@@ -281,7 +292,6 @@ if __name__ == '__main__':
            else:
                password = None
        
       -
            # add missing arguments, do type conversions
            if cmd.name == 'importprivkey':
                # See if they specificed a key on the cmd line, if not prompt
       t@@ -289,21 +299,21 @@ if __name__ == '__main__':
                    args[1] = prompt_password('Enter PrivateKey (will not echo):', False)
        
            elif cmd.name == 'signrawtransaction':
       -        args = [ cmd, args[1], json.loads(args[2]) if len(args)>2 else [], json.loads(args[3]) if len(args)>3 else []]
       +        args = [cmd, args[1], json.loads(args[2]) if len(args) > 2 else [], json.loads(args[3]) if len(args) > 3 else []]
        
            elif cmd.name == 'createmultisig':
       -        args = [ cmd, int(args[1]), json.loads(args[2])]
       +        args = [cmd, int(args[1]), json.loads(args[2])]
        
            elif cmd.name == 'createrawtransaction':
       -        args = [ cmd, json.loads(args[1]), json.loads(args[2])]
       +        args = [cmd, json.loads(args[1]), json.loads(args[2])]
        
            elif cmd.name == 'listaddresses':
                args = [cmd, options.show_all, options.show_labels]
        
            elif cmd.name in ['payto', 'mktx']:
                domain = [options.from_addr] if options.from_addr else None
       -        args = [ 'mktx', args[1], Decimal(args[2]), Decimal(options.tx_fee) if options.tx_fee else None, options.change_addr, domain ]
       -        
       +        args = ['mktx', args[1], Decimal(args[2]), Decimal(options.tx_fee) if options.tx_fee else None, options.change_addr, domain]
       +
            elif cmd.name in ['paytomany', 'mksendmanytx']:
                domain = [options.from_addr] if options.from_addr else None
                outputs = []
       t@@ -312,14 +322,12 @@ if __name__ == '__main__':
                        print_msg("Error: Mismatched arguments.")
                        exit(1)
                    outputs.append((args[i], Decimal(args[i+1])))
       -        args = [ 'mksendmanytx', outputs, Decimal(options.tx_fee) if options.tx_fee else None, options.change_addr, domain ]        
       +        args = ['mksendmanytx', outputs, Decimal(options.tx_fee) if options.tx_fee else None, options.change_addr, domain]
        
            elif cmd.name == 'help':
                if len(args) < 2:
                    print_help(parser)
        
       -                
       -
            # check the number of arguments
            if len(args) - 1 < cmd.min_args:
                print_msg("Not enough arguments")
       t@@ -335,8 +343,7 @@ if __name__ == '__main__':
                if len(args) > cmd.min_args + 1:
                    message = ' '.join(args[cmd.min_args:])
                    print_msg("Warning: Final argument was reconstructed from several arguments:", repr(message))
       -            args = args[0:cmd.min_args] + [ message ]
       -
       +            args = args[0:cmd.min_args] + [message]
        
            # open session
            if cmd.requires_network and not options.offline:
       t@@ -352,24 +359,22 @@ if __name__ == '__main__':
            else:
                network = None
        
       -
       -
            # run the command
       -
            if cmd.name == 'deseed':
                if not wallet.seed:
                    print_msg("Error: This wallet has no seed")
                else:
                    ns = wallet.storage.path + '.seedless'
       -            print_msg("Warning: you are going to create a seedless wallet'\nIt will be saved in '%s'"%ns)
       -            if raw_input("Are you sure you want to continue? (y/n) ") in ['y','Y','yes']:
       +            print_msg("Warning: you are going to create a seedless wallet'\nIt will be saved in '%s'" % ns)
       +            if raw_input("Are you sure you want to continue? (y/n) ") in ['y', 'Y', 'yes']:
                        wallet.storage.path = ns
                        wallet.seed = ''
                        wallet.storage.put('seed', '', True)
                        wallet.use_encryption = False
                        wallet.storage.put('use_encryption', wallet.use_encryption, True)
       -                for k in wallet.imported_keys.keys(): wallet.imported_keys[k] = ''
       -                wallet.storage.put('imported_keys',wallet.imported_keys, True)
       +                for k in wallet.imported_keys.keys():
       +                    wallet.imported_keys[k] = ''
       +                wallet.storage.put('imported_keys', wallet.imported_keys, True)
                        print_msg("Done.")
                    else:
                        print_msg("Action canceled.")
       t@@ -390,7 +395,6 @@ if __name__ == '__main__':
        
            else:
                run_command(cmd.name, password, args)
       -        
        
            if network:
                if wallet: