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GeezerVison is showing github.com — RustPython/whats_left.py at main · zaddach/RustPython Expand file tree/ Copy pathwhats_left.pyMore file actions executable file ·509 lines (431 loc) · 15.2 KB / Copy pathwhats_left.pyFile metadata and controlsexecutable file ·509 lines (431 loc) · 15.2 KB 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 #!/usr/bin/env -S python3 -I # This script generates Lib/snippets/whats_left_data.py with these variables defined: # expected_methods - a dictionary mapping builtin objects to their methods # cpymods - a dictionary mapping module names to their contents # libdir - the location of RustPython's Lib/ directory. # # TODO: include this: # which finds all modules it has available and # creates a Python dictionary mapping module names to their contents, which is # in turn used to generate a second Python script that also finds which modules # it has available and compares that against the first dictionary we generated. # We then run this second generated script with RustPython. import argparse import re import os import re import sys import json import warnings import inspect import subprocess import platform from pydoc import ModuleScanner if not sys.flags.isolated: print("running without -I option.") print("python -I whats_left.py") exit(1) GENERATED_FILE = "extra_tests/not_impl.py" implementation = platform.python_implementation() if implementation != "CPython": sys.exit(f"whats_left.py must be run under CPython, got {implementation} instead") if sys.version_info[:2] < (3, 11): sys.exit(f"whats_left.py must be run under CPython 3.11 or newer, got {implementation} {sys.version} instead") def parse_args(): parser = argparse.ArgumentParser(description="Process some integers.") parser.add_argument( "--signature", action="store_true", help="print functions whose signatures don't match CPython's", ) parser.add_argument( "--doc", action="store_true", help="print elements whose __doc__ don't match CPython's", ) parser.add_argument( "--json", action="store_true", help="print output as JSON (instead of line by line)", ) args = parser.parse_args() return args args = parse_args() # modules suggested for deprecation by PEP 594 (www.python.org/dev/peps/pep-0594/) # some of these might be implemented, but they are not a priority PEP_594_MODULES = { "aifc", "asynchat", "asyncore", "audioop", "binhex", "cgi", "cgitb", "chunk", "crypt", "formatter", "fpectl", "imghdr", "imp", "macpath", "msilib", "nntplib", "nis", "ossaudiodev", "parser", "pipes", "smtpd", "sndhdr", "spwd", "sunau", "telnetlib", "uu", "xdrlib", } # CPython specific modules (mostly consisting of templates/tests) CPYTHON_SPECIFIC_MODS = { 'xxmodule', 'xxsubtype', 'xxlimited', '_xxtestfuzz' '_testbuffer', '_testcapi', '_testimportmultiple', '_testinternalcapi', '_testmultiphase', } IGNORED_MODULES = {"this", "antigravity"} | PEP_594_MODULES | CPYTHON_SPECIFIC_MODS sys.path = [ path for path in sys.path if ("site-packages" not in path and "dist-packages" not in path) ] def attr_is_not_inherited(type_, attr): """ returns True if type_'s attr is not inherited from any of its base classes """ bases = type_.__mro__[1:] return getattr(type_, attr) not in (getattr(base, attr, None) for base in bases) def extra_info(obj): if callable(obj) and not inspect._signature_is_builtin(obj): doc = inspect.getdoc(obj) try: sig = str(inspect.signature(obj)) # remove function memory addresses return { "sig": re.sub(" at 0x[0-9A-Fa-f]+", " at 0xdeadbeef", sig), "doc": doc, } except Exception as e: exception = repr(e) # CPython uses ' RustPython uses " if exception.replace('"', "'").startswith("ValueError('no signature found"): return { "sig": "ValueError('no signature found')", "doc": doc, } return { "sig": exception, "doc": doc, } return { "sig": None, "doc": None, } def name_sort_key(name): if name == "builtins": return "" if name[0] == "_": return name[1:] + "1" return name + "2" def gen_methods(): types = [ bool, bytearray, bytes, complex, dict, enumerate, filter, float, frozenset, int, list, map, memoryview, range, set, slice, str, super, tuple, object, zip, classmethod, staticmethod, property, Exception, BaseException, ] objects = [t.__name__ for t in types] objects.append("type(None)") iters = [ "type(bytearray().__iter__())", "type(bytes().__iter__())", "type(dict().__iter__())", "type(dict().values().__iter__())", "type(dict().items().__iter__())", "type(dict().values())", "type(dict().items())", "type(set().__iter__())", "type(list().__iter__())", "type(range(0).__iter__())", "type(str().__iter__())", "type(tuple().__iter__())", "type(memoryview(bytearray(b'0')).__iter__())", ] methods = {} for typ_code in objects + iters: typ = eval(typ_code) attrs = [] for attr in dir(typ): if attr_is_not_inherited(typ, attr): attrs.append((attr, extra_info(getattr(typ, attr)))) methods[typ.__name__] = (typ_code, extra_info(typ), attrs) output = "expected_methods = {\n" for name in sorted(methods.keys(), key=name_sort_key): typ_code, extra, attrs = methods[name] output += f" '{name}': ({typ_code}, {extra!r}, [\n" for attr, attr_extra in attrs: output += f" ({attr!r}, {attr_extra!r}),\n" output += " ]),\n" if typ_code != objects[-1]: output += "\n" output += "}\n\n" return output def scan_modules(): """taken from the source code of help('modules') https://github.com/python/cpython/blob/63298930fb531ba2bb4f23bc3b915dbf1e17e9e1/Lib/pydoc.py#L2178""" modules = {} def callback(path, modname, desc, modules=modules): if modname and modname[-9:] == ".__init__": modname = modname[:-9] + " (package)" if modname.find(".") < 0: modules[modname] = 1 def onerror(modname): callback(None, modname, None) with warnings.catch_warnings(): # ignore warnings from importing deprecated modules warnings.simplefilter("ignore") ModuleScanner().run(callback, onerror=onerror) return list(modules.keys()) def import_module(module_name): import io from contextlib import redirect_stdout # Importing modules causes ('Constant String', 2, None, 4) and # "Hello world!" to be printed to stdout. f = io.StringIO() with warnings.catch_warnings(), redirect_stdout(f): # ignore warnings caused by importing deprecated modules warnings.filterwarnings("ignore", category=DeprecationWarning) try: module = __import__(module_name) except Exception as e: return e return module def is_child(module, item): import inspect item_mod = inspect.getmodule(item) return item_mod is module def dir_of_mod_or_error(module_name, keep_other=True): module = import_module(module_name) item_names = sorted(set(dir(module))) result = {} for item_name in item_names: item = getattr(module, item_name) # don't repeat items imported from other modules if keep_other or is_child(module, item) or inspect.getmodule(item) is None: result[item_name] = extra_info(item) return result def gen_modules(): # check name because modules listed have side effects on import, # e.g. printing something or opening a webpage modules = {} for mod_name in sorted(scan_modules(), key=name_sort_key): if mod_name in IGNORED_MODULES: continue # when generating CPython list, ignore items defined by other modules dir_result = dir_of_mod_or_error(mod_name, keep_other=False) if isinstance(dir_result, Exception): print( f"!!! {mod_name} skipped because {type(dir_result).__name__}: {str(dir_result)}", file=sys.stderr, ) continue modules[mod_name] = dir_result return modules output = """\ # WARNING: THIS IS AN AUTOMATICALLY GENERATED FILE # EDIT extra_tests/not_impl_gen.sh, NOT THIS FILE. # RESULTS OF THIS TEST DEPEND ON THE CPYTHON # VERSION AND PYTHON ENVIRONMENT USED # TO RUN not_impl_mods_gen.py """ output += gen_methods() output += f""" cpymods = {gen_modules()!r} libdir = {os.path.abspath("Lib/").encode('utf8')!r} """ # Copy the source code of functions we will reuse in the generated script REUSED = [ attr_is_not_inherited, extra_info, dir_of_mod_or_error, import_module, is_child, ] for fn in REUSED: output += "".join(inspect.getsourcelines(fn)[0]) + "\n\n" # Prevent missing variable linter errors from compare() expected_methods = {} cpymods = {} libdir = "" # This function holds the source code that will be run under RustPython def compare(): import inspect import io import os import re import sys import warnings from contextlib import redirect_stdout import json import platform def method_incompatibility_reason(typ, method_name, real_method_value): has_method = hasattr(typ, method_name) if not has_method: return "" is_inherited = not attr_is_not_inherited(typ, method_name) if is_inherited: return "(inherited)" value = extra_info(getattr(typ, method_name)) if value != real_method_value: return f"{value} != {real_method_value}" return None not_implementeds = {} for name, (typ, real_value, methods) in expected_methods.items(): missing_methods = {} for method, real_method_value in methods: reason = method_incompatibility_reason(typ, method, real_method_value) if reason is not None: missing_methods[method] = reason if missing_methods: not_implementeds[name] = missing_methods if platform.python_implementation() == "CPython": if not_implementeds: sys.exit("ERROR: CPython should have all the methods") mod_names = [ name.decode() for name, ext in map(os.path.splitext, os.listdir(libdir)) if ext == b".py" or os.path.isdir(os.path.join(libdir, name)) ] mod_names += list(sys.builtin_module_names) # Remove easter egg modules mod_names = sorted(set(mod_names) - {"this", "antigravity"}) rustpymods = {mod: dir_of_mod_or_error(mod) for mod in mod_names} result = { "cpython_modules": {}, "implemented": {}, "not_implemented": {}, "failed_to_import": {}, "missing_items": {}, "mismatched_items": {}, "mismatched_doc_items": {}, } for modname, cpymod in cpymods.items(): rustpymod = rustpymods.get(modname) if rustpymod is None: result["not_implemented"][modname] = None elif isinstance(rustpymod, Exception): result["failed_to_import"][modname] = rustpymod.__class__.__name__ + str(rustpymod) else: implemented_items = sorted(set(cpymod) & set(rustpymod)) mod_missing_items = set(cpymod) - set(rustpymod) mod_missing_items = sorted( f"{modname}.{item}" for item in mod_missing_items ) mod_mismatched_items = [ (f"{modname}.{item}", rustpymod[item]["sig"], cpymod[item]["sig"]) for item in implemented_items if rustpymod[item]["sig"] != cpymod[item]["sig"] and not isinstance(cpymod[item]["sig"], Exception) ] mod_mismatched_doc_items = [ (f"{modname}.{item}", rustpymod[item]["doc"], cpymod[item]["doc"]) for item in implemented_items if rustpymod[item]["doc"] != cpymod[item]["doc"] ] if mod_missing_items or mod_mismatched_items: if mod_missing_items: result["missing_items"][modname] = mod_missing_items if mod_mismatched_items: result["mismatched_items"][modname] = mod_mismatched_items if mod_mismatched_doc_items: result["mismatched_doc_items"][modname] = mod_mismatched_doc_items else: result["implemented"][modname] = None result["cpython_modules"] = cpymods result["not_implementeds"] = not_implementeds print(json.dumps(result)) def remove_one_indent(s): indent = " " return s[len(indent) :] if s.startswith(indent) else s compare_src = inspect.getsourcelines(compare)[0][1:] output += "".join(remove_one_indent(line) for line in compare_src) with open(GENERATED_FILE, "w", encoding='utf-8') as f: f.write(output + "\n") subprocess.run(["cargo", "build", "--release", "--features=ssl"], check=True) result = subprocess.run( ["cargo", "run", "--release", "--features=ssl", "-q", "--", GENERATED_FILE], env={**os.environ.copy(), "RUSTPYTHONPATH": "Lib"}, text=True, capture_output=True, ) # The last line should be json output, the rest of the lines can contain noise # because importing certain modules can print stuff to stdout/stderr result = json.loads(result.stdout.splitlines()[-1]) if args.json: print(json.dumps(result)) sys.exit() # missing entire modules print("# modules") for modname in result["not_implemented"]: print(modname, "(entire module)") for modname, exception in result["failed_to_import"].items(): print(f"{modname} (exists but not importable: {exception})") # missing from builtins print("\n# builtin items") for module, missing_methods in result["not_implementeds"].items(): for method, reason in missing_methods.items(): print(f"{module}.{method}" + (f" {reason}" if reason else "")) # missing from modules print("\n# stdlib items") for modname, missing in result["missing_items"].items(): for item in missing: print(item) if args.signature: print("\n# mismatching signatures (warnings)") for modname, mismatched in result["mismatched_items"].items(): for i, (item, rustpy_value, cpython_value) in enumerate(mismatched): if cpython_value and cpython_value.startswith("ValueError("): continue # these items will never match if rustpy_value is None or rustpy_value.startswith("ValueError("): rustpy_value = f" {rustpy_value}" print(f"{item}{rustpy_value}") if cpython_value is None: cpython_value = f" {cpython_value}" print(f"{' ' * len(item)}{cpython_value}") if i < len(mismatched) - 1: print() if args.doc: print("\n# mismatching `__doc__`s (warnings)") for modname, mismatched in result["mismatched_doc_items"].items(): for (item, rustpy_doc, cpython_doc) in mismatched: print(f"{item} {repr(rustpy_doc)} != {repr(cpython_doc)}") print() print("# summary") for error_type, modules in result.items(): print("# ", error_type, len(modules)) |
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