--- opster.py.orig	2018-10-21 19:05:05 UTC
+++ opster.py
@@ -3,7 +3,7 @@
 '''
 
 import sys, traceback, getopt, types, textwrap, inspect, os, re, keyword, codecs
-from itertools import imap
+
 from functools import wraps
 from collections import namedtuple, Callable
 from contextlib import contextmanager
@@ -19,12 +19,12 @@ def write(text, out=None):
     '''Write output to a given stream (stdout by default).'''
     out = out or sys.stdout
     try:
-        print >> out, text
+        print(text, file=out)
     # Needed on Python 2.x if text is str/bytes containing non-ascii
     # characters and sys.stdout is replaced by a writer from the codecs
     # module. text will be decoded as ascii giving the decode error.
     except UnicodeDecodeError:
-        print >> out, text.decode('utf-8')
+        print(text.decode('utf-8'), file=out)
     # Get the order of stdout/stderr correct on Windows. AFAICT this is only
     # needed for the test environment but it's harmless otherwise.
     out.flush()
@@ -294,9 +294,9 @@ def help_(cmdtable, globalopts, scriptname):
             hlp = {}
             # determine if any command is marked for shortlist
             shortlist = (name == 'shortlist' and
-                         any(imap(lambda x: x.startswith('^'), cmdtable)))
+                         any(map(lambda x: x.startswith('^'), cmdtable)))
 
-            for cmd, info in cmdtable.items():
+            for cmd, info in list(cmdtable.items()):
                 if cmd.startswith('~'):
                     continue  # do not display hidden commands
                 if shortlist and not cmd.startswith('^'):
@@ -306,7 +306,7 @@ def help_(cmdtable, globalopts, scriptname):
                 hlp[cmd] = doc.strip().splitlines()[0].rstrip()
 
             hlplist = sorted(hlp)
-            maxlen = max(map(len, hlplist))
+            maxlen = max(list(map(len, hlplist)))
 
             write('usage: %s <command> [options]' % scriptname)
             write('\ncommands:\n')
@@ -449,7 +449,7 @@ def Option(opt):
 def CmdTable(cmdtable):
     '''Factory to convert option tuples in a cmdtable'''
     newtable = {}
-    for name, (func, opts, usage) in cmdtable.items():
+    for name, (func, opts, usage) in list(cmdtable.items()):
         newtable[name] = (func, [Option(o) for o in opts], usage)
     return newtable
 
@@ -499,7 +499,7 @@ class LiteralOption(BaseOption):
 
 class UnicodeOption(BaseOption):
     '''Handle unicode values, decoding input'''
-    type = unicode
+    type = str
 
     def convert(self, final):
         return decodearg(final)
@@ -508,7 +508,7 @@ class UnicodeOption(BaseOption):
 class BoolOption(BaseOption):
     '''Boolean option type.'''
     has_parameter = False
-    type = (bool, types.NoneType)
+    type = (bool, type(None))
 
     def convert(self, final):
         return bool(final)
@@ -682,7 +682,7 @@ def findpossible(cmd, table):
     '''
     pattern = '.*?'.join(list(cmd))
     choice = {}
-    for e in table.keys():
+    for e in list(table.keys()):
         aliases = aliases_(e)
         found = None
         if cmd in aliases:
@@ -706,12 +706,12 @@ def findcmd(cmd, table):
         return choice[cmd]
 
     if len(choice) > 1:
-        clist = choice.keys()
+        clist = list(choice.keys())
         clist.sort()
         raise AmbiguousCommand(cmd, clist)
 
     if choice:
-        return choice.values()[0]
+        return list(choice.values())[0]
 
     raise UnknownCommand(cmd)
 
@@ -951,7 +951,7 @@ def pretty_doc_string(item):
     if len(lines) <= 1:
         return raw_doc
     indent = len(lines[1]) - len(lines[1].lstrip())
-    return '\n'.join([lines[0]] + map(lambda l: l[indent:], lines[1:]))
+    return '\n'.join([lines[0]] + [l[indent:] for l in lines[1:]])
 
 
 def name_from_python(name):
@@ -990,12 +990,12 @@ def autocomplete(cmdtable, args, middleware):
         current = ''
 
     commands = []
-    for k in cmdtable.keys():
+    for k in list(cmdtable.keys()):
         commands += aliases_(k)
 
     # command
     if cword == 1:
-        print ' '.join(filter(lambda x: x.startswith(current), commands))
+        print(' '.join([x for x in commands if x.startswith(current)]))
 
     # command options
     elif cwords[0] in commands:
@@ -1013,9 +1013,9 @@ def autocomplete(cmdtable, args, middleware):
                 if middleware:
                     completer = middleware(completer)
                 args = completer(current)
-                print ' '.join(args),
+                print(' '.join(args), end=' ')
 
-        print ' '.join((o for o in options if o.startswith(current)))
+        print(' '.join((o for o in options if o.startswith(current))))
 
     sys.exit(1)
 
@@ -1058,7 +1058,7 @@ def completion(type=('t', 'bash', 'Completion type (ba
     '''Outputs completion script for bash or zsh.'''
 
     prog_name = os.path.split(sys.argv[0])[1]
-    print COMPLETIONS[type].strip() % prog_name
+    print(COMPLETIONS[type].strip() % prog_name)
 
 
 # --------
--- setup.py.orig	2018-10-21 19:01:07 UTC
+++ setup.py
@@ -4,10 +4,6 @@ import sys, os, re
 
 from setuptools import setup
 
-if sys.version_info[0] >= 3:
-    extra = {'use_2to3': True}
-else:
-    extra = {}
 
 def read(fname):
     return open(os.path.join(os.path.dirname(__file__), fname)).read()
@@ -46,4 +42,4 @@ setup(
         ],
     py_modules=['opster'],
     platforms='any',
-    **extra)
+    )