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How to use py3to2 method in Robotframework
Best Python code snippet using robotframework
recipe-574437.py
Source:recipe-574437.py 
...187 # compile, expand, recompile, exec188 if PYVERSION == 'py2x': print s189 if 0: print s190 else:191 t = t0.py3to2() if hasattr(t0, 'py3to2') else t0; xxx = t; s = repr(t)192if 0: TESTCODE = 'a, *b = 1, 2, 3; print(a, b)' # pep3132 - Extended Iterable Unpacking193if 0: TESTCODE = """194?z = 3195?def foo(x, *y): return x, y, z196?print foo(1)197"""198if 1: TESTCODE = """199?def foo(x):200? def bar(): nonlocal x; x += 1201? bar(); return x202?print(foo(1))""" # nonlocal statement203TESTCODE = TESTCODE.replace('?', '')204# end common205# beg py2x init206from __future__ import nested_scopes, generators, division, absolute_import, with_statement; import py3to2; from py3to2 import *207import __builtin__; sys.modules['builtins'] = builtins = __builtin__; builtins.bytes = str208import itertools; filter, map, range, zip = itertools.ifilter, itertools.imap, xrange, itertools.izip # iterators209execsrc('common')210import mmap, signal, subprocess, time211class _server(object): # python3k server which byte compiles 3k code212 bufsize = 1<<20213 @staticmethod214 def restart(restart = True):215 self = _server216 # def restart(self, restart = True):217 global SERVERIO, SERVER218 if restart:219 if 'SERVERIO' in globals():220 for x in SERVERIO: os.close(x)221 SERVERIO = os.pipe()222 print 'py3to2 server restarting with io: %s'%(SERVERIO, )223 if 'SERVER' in globals(): self.kill()224 SERVER = subprocess.Popen('python3k -i', stdin = subprocess.PIPE, stdout = SERVERIO[1], stderr = subprocess.STDOUT, shell = True)225 SERVER.stdin.write('import py3to2; reload(py3to2); from py3to2 import *\n')226 SERVER.stdin.write('CLIENTPID = %i\n'%PID)227 @staticmethod228 def kill():229 # def kill(self):230 global SERVER231 try: os.kill(SERVER.pid, signal.SIGTERM)232 except Exception, exc: print exc233 del SERVER234 @staticmethod235 def input(s, stdout = True, timeout = 2,236 prompt = rgx2nd(('(.+)', 'py3to2 server: \\1'), ),237 subprompt = rgx2nd(('>>> ', '', None), ),238 fndexc = re.compile('\WTraceback '),239 ):240 self = _server241 if not s: return242 SERVER.stdin.write(s)243 try:244 buf = ''245 SERVER.stdin.write("\n\nimport os, signal; os.kill(CLIENTPID, signal.SIGINT)\n")246 time.sleep(timeout)247 raise IOError('py3to2 server not responding to input: %s'%repr(s))248 except KeyboardInterrupt:249 buf = os.read(SERVERIO[0], self.bufsize)250 buf = subprompt.sub(buf)251 if prompt: buf = prompt.sub(buf)252 if fndexc.search(buf): raise IOError('py3to2 server input: %s\n%s'%(s, buf))253 if stdout: sys.stdout.write(buf)254 else: return buf255 @staticmethod256 def get(varname, **kwds):257 self = _server258 return self.input("print(%s)"%varname, stdout = None, prompt = None, **kwds)259 def __init__(self, restart = None):260 global SERVER261 self.restart(restart = 'SERVER' not in globals())262 self.input('\n')263 @staticmethod264 def test():265 self = _server266 global xxx267 if 1: # server init268 self.restart()269 self.input("1, 2;3")270 if 0: # py3k codetree271 server.input("codetree.test()")272 if 1: # 3to2273 s = server.get('xxx')274 t = eval(s)275 c = t.compile()276 print dis.dis(c)277 exec(c, globals())278server = _server()279if 1:280 def builtinsadd(f): setattr(__builtin__, f.__name__, f); return f281 @builtinsadd282 def print_py3k(*args, **kwds):283 sep = kwds['sep'] if 'sep' in kwds else ' '284 end = kwds['end'] if 'end' in kwds else '\n'285 file = kwds['file'] if 'file' in kwds else sys.stdout286 s = sep.join(str(x) for x in args)287 file.write(s)288 file.write(end)289 @builtinsadd290 def compile_py3k(source, filename, mode, *args, **kwds):291 """292py3k example:293import py3to2; from py3to2 import print_py3k294src = "a, b, *c = 1, 2, 3, 4, 5; print('a =', a); print('b =', b); print('c =', c)"295code_object = py3to2.compile_py3k(src, '', 'exec')296exec(code_object, globals())297"""298 s = "x = compile(%s, %s, %s, *%s, **%s); x = codetree(x).py3to2()"%tuple(repr(x) for x in (source, filename, mode, args, kwds))299 server.input(s)300 x = server.get('x')301 x = eval(x)302 x = x.compile()303 if 1: dis.dis(x)304 return x305 compile_py3k.__doc__ += compile.__doc__306 if 0: # test307 x = compile_py3k(TESTCODE, '', 'exec')308 print dis.dis(x)309 exec(x)310# execsrc('py3k parse', compile_py3k)311# end py2x init312# beg py3k init313import py3to2; from py3to2 import *314import builtins, imp; builtins.basestring = str, bytes; builtins.reload = imp.reload315execsrc('common')316class codetree(codetree):317 builtins = {'print':'print_py3k'}318 # builtins = {}319 def py3to2(self):320 assert not self.co_kwonlyargcount, (self.co_kwonlyargcount)321 s = bytearray(self.co_code)322 op3to2 = self.op3to2323 HAVE_ARGUMENT = opcode.HAVE_ARGUMENT324 skip = 0325 for i, x in enumerate(s):326 if skip: skip -= 1; continue327 if x >= HAVE_ARGUMENT: skip = 2328 if x in op3to2: s[i] = op3to2[x]329 self.co_code = s.str()330 for i, x in enumerate(self.co_names):331 # if x == 'print': self.co_names[i] = 'py3to2.compiler.print_py3k'332 if x in self.builtins: self.co_names[i] = self.builtins[x]333 for x in self.co_args:334 y = getattr(self, x)335 if isinstance(y, bytes): setattr(self, x, y.str())336 for i, x in enumerate(self.co_consts):337 if isinstance(x, codetree): self.co_consts[i] = x.py3to2()338 return self339# end py3k init340# beg py3k parse341# end py3k parse342################################343copy this to ceval.c344################################345/* Execute compiled code */346/* XXX TO DO:347 XXX speed up searching for keywords by using a dictionary348 XXX document it!349 */350/* enable more aggressive intra-module optimizations, where available */351#define PY_LOCAL_AGGRESSIVE...
recipe-574436.py
Source:recipe-574436.py
...187 # compile, expand, recompile, exec188 if PYVERSION == 'py2x': print s189 if 0: print s190 else:191 t = t0.py3to2() if hasattr(t0, 'py3to2') else t0; xxx = t; s = repr(t)192if 0: TESTCODE = 'a, *b = 1, 2, 3; print(a, b)' # pep3132 - Extended Iterable Unpacking193if 0: TESTCODE = """194?z = 3195?def foo(x, *y): return x, y, z196?print foo(1)197"""198if 1: TESTCODE = """199?def foo(x):200? def bar(): nonlocal x; x += 1201? bar(); return x202?print(foo(1))""" # nonlocal statement203TESTCODE = TESTCODE.replace('?', '')204# end common205# beg py2x init206from __future__ import nested_scopes, generators, division, absolute_import, with_statement; import py3to2; from py3to2 import *207import __builtin__; sys.modules['builtins'] = builtins = __builtin__; builtins.bytes = str208import itertools; filter, map, range, zip = itertools.ifilter, itertools.imap, xrange, itertools.izip # iterators209execsrc('common')210import mmap, signal, subprocess, time211class _server(object): # python3k server which byte compiles 3k code212 bufsize = 1<<20213 @staticmethod214 def restart(restart = True):215 self = _server216 # def restart(self, restart = True):217 global SERVERIO, SERVER218 if restart:219 if 'SERVERIO' in globals():220 for x in SERVERIO: os.close(x)221 SERVERIO = os.pipe()222 print 'py3to2 server restarting with io: %s'%(SERVERIO, )223 if 'SERVER' in globals(): self.kill()224 SERVER = subprocess.Popen('python3k -i', stdin = subprocess.PIPE, stdout = SERVERIO[1], stderr = subprocess.STDOUT, shell = True)225 SERVER.stdin.write('import py3to2; reload(py3to2); from py3to2 import *\n')226 SERVER.stdin.write('CLIENTPID = %i\n'%PID)227 @staticmethod228 def kill():229 # def kill(self):230 global SERVER231 try: os.kill(SERVER.pid, signal.SIGTERM)232 except Exception, exc: print exc233 del SERVER234 @staticmethod235 def input(s, stdout = True, timeout = 2,236 prompt = rgx2nd(('(.+)', 'py3to2 server: \\1'), ),237 subprompt = rgx2nd(('>>> ', '', None), ),238 fndexc = re.compile('\WTraceback '),239 ):240 self = _server241 if not s: return242 SERVER.stdin.write(s)243 try:244 buf = ''245 SERVER.stdin.write("\n\nimport os, signal; os.kill(CLIENTPID, signal.SIGINT)\n")246 time.sleep(timeout)247 raise IOError('py3to2 server not responding to input: %s'%repr(s))248 except KeyboardInterrupt:249 buf = os.read(SERVERIO[0], self.bufsize)250 buf = subprompt.sub(buf)251 if prompt: buf = prompt.sub(buf)252 if fndexc.search(buf): raise IOError('py3to2 server input: %s\n%s'%(s, buf))253 if stdout: sys.stdout.write(buf)254 else: return buf255 @staticmethod256 def get(varname, **kwds):257 self = _server258 return self.input("print(%s)"%varname, stdout = None, prompt = None, **kwds)259 def __init__(self, restart = None):260 global SERVER261 self.restart(restart = 'SERVER' not in globals())262 self.input('\n')263 @staticmethod264 def test():265 self = _server266 global xxx267 if 1: # server init268 self.restart()269 self.input("1, 2;3")270 if 0: # py3k codetree271 server.input("codetree.test()")272 if 1: # 3to2273 s = server.get('xxx')274 t = eval(s)275 c = t.compile()276 print dis.dis(c)277 exec(c, globals())278server = _server()279if 1:280 def builtinsadd(f): setattr(__builtin__, f.__name__, f); return f281 @builtinsadd282 def print_py3k(*args, **kwds):283 sep = kwds['sep'] if 'sep' in kwds else ' '284 end = kwds['end'] if 'end' in kwds else '\n'285 file = kwds['file'] if 'file' in kwds else sys.stdout286 s = sep.join(str(x) for x in args)287 file.write(s)288 file.write(end)289 @builtinsadd290 def compile_py3k(source, filename, mode, *args, **kwds):291 """292py3k example:293import py3to2; from py3to2 import print_py3k294src = "a, b, *c = 1, 2, 3, 4, 5; print('a =', a); print('b =', b); print('c =', c)"295code_object = py3to2.compile_py3k(src, '', 'exec')296exec(code_object, globals())297"""298 s = "x = compile(%s, %s, %s, *%s, **%s); x = codetree(x).py3to2()"%tuple(repr(x) for x in (source, filename, mode, args, kwds))299 server.input(s)300 x = server.get('x')301 x = eval(x)302 x = x.compile()303 if 1: dis.dis(x)304 return x305 compile_py3k.__doc__ += compile.__doc__306 if 0: # test307 x = compile_py3k(TESTCODE, '', 'exec')308 print dis.dis(x)309 exec(x)310# execsrc('py3k parse', compile_py3k)311# end py2x init312# beg py3k init313import py3to2; from py3to2 import *314import builtins, imp; builtins.basestring = str, bytes; builtins.reload = imp.reload315execsrc('common')316class codetree(codetree):317 builtins = {'print':'print_py3k'}318 # builtins = {}319 def py3to2(self):320 assert not self.co_kwonlyargcount, (self.co_kwonlyargcount)321 s = bytearray(self.co_code)322 op3to2 = self.op3to2323 HAVE_ARGUMENT = opcode.HAVE_ARGUMENT324 skip = 0325 for i, x in enumerate(s):326 if skip: skip -= 1; continue327 if x >= HAVE_ARGUMENT: skip = 2328 if x in op3to2: s[i] = op3to2[x]329 self.co_code = s.str()330 for i, x in enumerate(self.co_names):331 # if x == 'print': self.co_names[i] = 'py3to2.compiler.print_py3k'332 if x in self.builtins: self.co_names[i] = self.builtins[x]333 for x in self.co_args:334 y = getattr(self, x)335 if isinstance(y, bytes): setattr(self, x, y.str())336 for i, x in enumerate(self.co_consts):337 if isinstance(x, codetree): self.co_consts[i] = x.py3to2()338 return self339# end py3k init340# beg py3k parse341# end py3k parse342################################343copy this to ceval.c344################################345/* Execute compiled code */346/* XXX TO DO:347 XXX speed up searching for keywords by using a dictionary348 XXX document it!349 */350/* enable more aggressive intra-module optimizations, where available */351#define PY_LOCAL_AGGRESSIVE...
py3to2.py
Source:py3to2.py
1"""2@file3@brief Helper to convert a script written in Python 3 to Python 24"""5import os6import re7import shutil8from ..filehelper.synchelper import explore_folder_iterfile9from ..loghelper.flog import noLOG10from .default_regular_expression import _setup_pattern_copy11class Convert3to2Exception(Exception):12 """13 exception raised for an exception happening during the conversion14 """15 pass16def py3to2_convert_tree(folder, dest, encoding="utf8", pattern=".*[.]py$",17 pattern_copy=_setup_pattern_copy,18 unittest_modules=None, fLOG=noLOG):19 """20 Converts files in a folder and its subfolders from python 3 to python 2,21 the function only considers python script (verifying *pattern*).22 @param folder folder23 @param dest destination24 @param encoding all files will be saved with this encoding25 @param pattern pattern to find source code26 @param pattern_copy copy these files, do not modify them27 @param fLOG logging function28 @param unittest_modules modules used during unit tests but not installed29 @return list of copied files30 If a folder does not exists, it will create it.31 The function excludes all files in subfolders32 starting by ``dist``, ``_doc``, ``build``, ``extensions``, ``nbextensions``.33 The function also exclude subfolders inside34 subfolders following the pattern ``ut_.*``.35 There are some issues difficult to solve with strings.36 Python 2.7 is not friendly with strings. Some needed pieces of code::37 if sys.version_info[0]==2:38 from codecs import open39 You can also read blog post :ref:`b-migration-py2py3`.40 The variable *unittest_modules* indicates the list of41 modules which are not installed in :epkg:`Python` distribution42 but still used and placed in the same folder as the same which43 has to converted.44 *unittest_modules* can be either a list or a tuple ``(module, alias)``.45 Then the alias appears instead of the module name.46 The function does not convert the exception47 `FileNotFoundError <https://docs.python.org/3/library/exceptions.html>`_48 which only exists in Python 3. The module will fail in version 2.749 if this exception is raised.50 The following page51 `Cheat Sheet: Writing Python 2-3 compatible code52 <http://python-future.org/compatible_idioms.html>`_53 gives the difference between the two versions of Python54 and how to write compatible code.55 """56 exclude = ("temp_", "dist", "_doc", "build", "extensions",57 "nbextensions", "dist_module27", "_virtualenv", "_venv")58 reg = re.compile(".*/ut_.*/.*/.*")59 conv = []60 for file in explore_folder_iterfile(folder, pattern=pattern):61 full = os.path.join(folder, file)62 if "site-packages" in full:63 continue64 file = os.path.relpath(file, folder)65 # undesired sub folders66 ex = False67 for exc in exclude:68 if file.startswith(exc) or "\\temp_" in file or \69 "/temp_" in file or "dist_module27" in file:70 ex = True71 break72 if ex:73 continue74 # subfolders inside unit tests folder75 lfile = file.replace("\\", "/")76 if reg.search(lfile):77 continue78 py2 = py3to2_convert(full, unittest_modules)79 destfile = os.path.join(dest, file)80 dirname = os.path.dirname(destfile)81 if not os.path.exists(dirname):82 os.makedirs(dirname)83 with open(destfile, "w", encoding="utf8") as f:84 f.write(py2)85 conv.append(destfile)86 for file in explore_folder_iterfile(folder, pattern=pattern_copy):87 full = os.path.join(folder, file)88 file = os.path.relpath(file, folder)89 # undesired sub folders90 ex = False91 for exc in exclude:92 if file.startswith(exc) or "\\temp_" in file or \93 "/temp_" in file or "dist_module27" in file:94 ex = True95 break96 if ex:97 continue98 destfile = os.path.join(dest, file)99 dirname = os.path.dirname(destfile)100 if not os.path.exists(dirname):101 os.makedirs(dirname)102 shutil.copy(full, dirname)103 conv.append(destfile)104 fLOG("py3to2_convert_tree, copied", len(conv), "files")105 return conv106def py3to2_convert(script, unittest_modules):107 """108 converts a script into from python 3 to python 2109 @param script script or filename110 @param unittest_modules modules used during unit test but not installed,111 @see fn py3to2_convert_tree112 @return string113 See see @fn py3to2_convert_tree for more information.114 """115 if os.path.exists(script):116 try:117 with open(script, "r", encoding="utf8") as f:118 content = f.read()119 except (UnicodeEncodeError, UnicodeDecodeError): # pragma: no cover120 with open(script, "r") as f:121 content = f.read()122 else:123 content = script # pragma: no cover124 # start processing125 content = py3to2_remove_raise_from(content)126 # unicode127 if ("install_requires=" in content or "package_data" in content) and "setup" in content:128 # we skip the file setup.py as it raises an error129 pass130 else:131 try:132 content = py3to2_future(content)133 except Convert3to2Exception as e: # pragma: no cover134 raise Convert3to2Exception(135 'unable to convert a file due to unicode issue.\n File "{0}", line 1'.format(script)) from e136 # some other modification137 content = content.replace("from queue import", "from Queue import")138 content = content.replace("nonlocal ", "# nonlocal ")139 # long and unicode140 content = content.replace("int #long#", "long")141 content = content.replace("int # long#", "long")142 content = content.replace("str #unicode#", "unicode")143 content = content.replace("str # unicode#", "unicode")144 content = content.replace(145 "Programming Language :: Python :: 3", "Programming Language :: Python :: 2")146 content = content.replace(', sep="\\t")', ', sep="\\t".encode("ascii"))')147 # imported modules148 if unittest_modules is not None:149 content = py3to2_imported_local_modules(content, unittest_modules)150 # end151 return content152def py3to2_future(content):153 """154 checks that import ``from __future__ import unicode_literals``155 is always present, the function assumes it is a python code156 @param content file content157 @return new content158 """159 find = "from __future__ import unicode_literals"160 if find in content and '"{0}"'.format(find) not in content:161 # the second condition avoid to raise this162 # exception when parsing this file163 # this case should only happen for this file164 raise Convert3to2Exception( # pragma: no cover165 "unable to convert a file")166 lines = content.split("\n")167 position = 0168 incomment = None169 while (position < len(lines) and not lines[position].startswith("import ") and170 not lines[position].startswith("from ") and171 not lines[position].startswith("def ") and172 not lines[position].startswith("class ")):173 if incomment is None:174 if lines[position].startswith("'''"):175 incomment = "'''" # pragma: no cover176 elif lines[position].startswith('"""'):177 incomment = '"""'178 else:179 if lines[position].endswith("'''"): # pragma: no cover180 incomment = None181 position += 1182 break183 if lines[position].endswith('"""'):184 incomment = None185 position += 1186 break187 position += 1188 if position < len(lines):189 lines[position] = "{0}\n{1}".format(find, lines[position])190 return "\n".join(lines)191def py3to2_remove_raise_from(content):192 """193 Removes expression such as: ``raise Exception ("...") from e``.194 The function is very basic. It should be done with a grammar.195 @param content file content196 @return script197 """198 lines = content.split("\n")199 r = None200 for i, line in enumerate(lines):201 if " raise " in line:202 r = i203 if " from " in line and r is not None:204 spl = line.split(" from ")205 if len(spl[0].strip(" \n")) > 0:206 lines[i] = line = spl[0] + "# from " + " - ".join(spl[1:])207 if r is not None and i > r + 3:208 r = None209 return "\n".join(lines)210def py3to2_imported_local_modules(content, unittest_modules):211 """212 See function @see fn py3to2_convert_tree213 and documentation about parameter *unittest_modules*.214 @param content script or filename215 @param unittest_modules modules used during unit test but not installed,216 @see fn py3to2_convert_tree217 """218 lines = content.split("\n")219 for modname in unittest_modules:220 if isinstance(modname, tuple):221 modname, alias = modname # pragma: no cover222 else:223 alias = modname224 s1 = '"{0}"'.format(modname)225 s2 = "'{0}'".format(modname)226 s3 = "import {0}".format(modname)227 s4 = '"{0}"'.format(modname.upper())228 s4_rep = '"{0}27"'.format(modname.upper())229 if (s1 in content or s2 in content or s4 in content) and s3 in content:230 for i, line in enumerate(lines):231 if " in " in line or "ModuleInstall" in line:232 continue233 if s1 in line:234 line = line.replace(235 s1, '"..", "{0}", "dist_module27"'.format(alias))236 lines[i] = line237 elif s2 in line:238 line = line.replace( # pragma: no cover239 s2, "'..', '{0}', 'dist_module27'".format(alias))240 lines[i] = line # pragma: no cover241 elif s4 in line:242 line = line.replace(s4, s4_rep)243 lines[i] = line...
compat.py
Source:compat.py
...23 """Deprecated since RF 4.0. Use 'py3to2' instead."""24 if hasattr(cls, '__unicode__'):25 cls.__str__ = lambda self: unicode(self).encode('UTF-8')26 return cls27 def py3to2(cls):28 if ismethod(cls.__str__) and cls.__str__.im_func is not unicode_to_str:29 cls.__unicode__ = cls.__str__30 cls.__str__ = unicode_to_str31 if hasattr(cls, '__bool__'):32 cls.__nonzero__ = cls.__bool__33 return cls34 def unicode_to_str(self):35 return unicode(self).encode('UTF-8')36else:37 from inspect import unwrap38 from io import StringIO39 def py2to3(cls):40 """Deprecated since RF 4.0. Use 'py3to2' instead."""41 if hasattr(cls, '__unicode__'):42 cls.__str__ = lambda self: self.__unicode__()43 if hasattr(cls, '__nonzero__'):44 cls.__bool__ = lambda self: self.__nonzero__()45 return cls46 def py3to2(cls):47 return cls48# Copied from Jinja2, released under the BSD license.49# https://github.com/mitsuhiko/jinja2/blob/743598d788528921df825479d64f492ef60bef82/jinja2/_compat.py#L8850def with_metaclass(meta, *bases):51 """Create a base class with a metaclass."""52 # This requires a bit of explanation: the basic idea is to make a53 # dummy metaclass for one level of class instantiation that replaces54 # itself with the actual metaclass.55 class metaclass(type):56 def __new__(cls, name, this_bases, d):57 return meta(name, bases, d)58 return type.__new__(metaclass, 'temporary_class', (), {})59# On IronPython sys.stdxxx.isatty() always returns True60if not IRONPYTHON:...
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