GeezerVisonThe World Wide Web, restored to 800 pixels of glory. |
| Home|About|Gaming cabinet|Archives|How it works|Starter sites |
GeezerVison is showing github.com — cpython/Lib/pprint.py at main · python/cpython Expand file tree/ Copy pathpprint.pyMore file actions 972 lines (844 loc) · 35.1 KB / Copy pathpprint.pyFile metadata and controls972 lines (844 loc) · 35.1 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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 # Author: Fred L. Drake, Jr. # # This is a simple little module I wrote to make life easier. I didn't # see anything quite like it in the library, though I may have overlooked # something. I wrote this when I was trying to read some heavily nested # tuples with fairly non-descriptive content. This is modeled very much # after Lisp/Scheme - style pretty-printing of lists. If you find it # useful, thank small children who sleep at night. """Support to pretty-print lists, tuples, & dictionaries recursively. Very simple, but useful, especially in debugging data structures. Classes ------- PrettyPrinter() Handle pretty-printing operations onto a stream using a configured set of formatting parameters. Functions --------- pformat() Format a Python object into a pretty-printed representation. pprint() Pretty-print a Python object to a stream [default is sys.stdout]. saferepr() Generate a 'standard' repr()-like value, but protect against recursive data structures. """ import collections as _collections import sys as _sys import types as _types from io import StringIO as _StringIO __all__ = ["pprint","pformat","isreadable","isrecursive","saferepr", "PrettyPrinter", "pp"] def pprint(object, stream=None, indent=1, width=80, depth=None, *, compact=False, expand=False, sort_dicts=True, underscore_numbers=False): """Pretty-print a Python object to a stream [default is sys.stdout].""" printer = PrettyPrinter( stream=stream, indent=indent, width=width, depth=depth, compact=compact, expand=expand, sort_dicts=sort_dicts, underscore_numbers=underscore_numbers) printer.pprint(object) def pformat(object, indent=1, width=80, depth=None, *, compact=False, expand=False, sort_dicts=True, underscore_numbers=False): """Format a Python object into a pretty-printed representation.""" return PrettyPrinter(indent=indent, width=width, depth=depth, compact=compact, expand=expand, sort_dicts=sort_dicts, underscore_numbers=underscore_numbers).pformat(object) def pp(object, *args, sort_dicts=False, **kwargs): """Pretty-print a Python object""" pprint(object, *args, sort_dicts=sort_dicts, **kwargs) def saferepr(object): """Version of repr() which can handle recursive data structures.""" return PrettyPrinter()._safe_repr(object, {}, None, 0)[0] def isreadable(object): """Determine if saferepr(object) is readable by eval().""" return PrettyPrinter()._safe_repr(object, {}, None, 0)[1] def isrecursive(object): """Determine if object requires a recursive representation.""" return PrettyPrinter()._safe_repr(object, {}, None, 0)[2] class _safe_key: """Helper function for key functions when sorting unorderable objects. The wrapped-object will fallback to a Py2.x style comparison for unorderable types (sorting first comparing the type name and then by the obj ids). Does not work recursively, so dict.items() must have _safe_key applied to both the key and the value. """ __slots__ = ['obj'] def __init__(self, obj): self.obj = obj def __lt__(self, other): try: return self.obj < other.obj except TypeError: return ((str(type(self.obj)), id(self.obj)) < \ (str(type(other.obj)), id(other.obj))) def _safe_tuple(t): "Helper function for comparing 2-tuples" return _safe_key(t[0]), _safe_key(t[1]) class PrettyPrinter: def __init__(self, indent=1, width=80, depth=None, stream=None, *, compact=False, expand=False, sort_dicts=True, underscore_numbers=False): """Handle pretty printing operations onto a stream using a set of configured parameters. indent Number of spaces to indent for each level of nesting. width Attempted maximum number of columns in the output. depth The maximum depth to print out nested structures. stream The desired output stream. If omitted (or false), the standard output stream available at construction will be used. compact If true, several items will be combined in one line. Incompatible with expand mode. expand If true, the output will be formatted similar to pretty-printed json.dumps() when ``indent`` is supplied. Incompatible with compact mode. sort_dicts If true, dict keys are sorted. underscore_numbers If true, digit groups are separated with underscores. """ indent = int(indent) width = int(width) if indent < 0: raise ValueError('indent must be >= 0') if depth is not None and depth <= 0: raise ValueError('depth must be > 0') if not width: raise ValueError('width must be != 0') if compact and expand: raise ValueError('compact and expand are incompatible') self._depth = depth self._indent_per_level = indent self._width = width if stream is not None: self._stream = stream else: self._stream = _sys.stdout self._compact = bool(compact) self._expand = bool(expand) self._sort_dicts = sort_dicts self._underscore_numbers = underscore_numbers def pprint(self, object): if self._stream is not None: self._format(object, self._stream, 0, 0, {}, 0) self._stream.write("\n") def pformat(self, object): sio = _StringIO() self._format(object, sio, 0, 0, {}, 0) return sio.getvalue() def isrecursive(self, object): return self.format(object, {}, 0, 0)[2] def isreadable(self, object): s, readable, recursive = self.format(object, {}, 0, 0) return readable and not recursive def _format(self, object, stream, indent, allowance, context, level): # Width of any "key: " prefix already written on the current line by # _format_child(). In expand mode `indent` is the block indent and so # does not include it, but it still consumes width here. prefix_len = self._pending_prefix_len self._pending_prefix_len = 0 objid = id(object) if objid in context: stream.write(_recursion(object)) self._recursive = True self._readable = False return rep = self._repr(object, context, level) max_width = self._width - indent - prefix_len - allowance if len(rep) > max_width: p = self._dispatch.get(type(object).__repr__, None) # Lazy import to improve module import time from dataclasses import is_dataclass if p is not None: context[objid] = 1 p(self, object, stream, indent, allowance, context, level + 1) del context[objid] return elif (is_dataclass(object) and not isinstance(object, type) and object.__dataclass_params__.repr and # Check dataclass has generated repr method. hasattr(object.__repr__, "__wrapped__") and "__create_fn__" in object.__repr__.__wrapped__.__qualname__): context[objid] = 1 self._pprint_dataclass(object, stream, indent, allowance, context, level + 1) del context[objid] return stream.write(rep) def _format_block_start(self, start_str, indent): if self._expand: return f"{start_str}\n{' ' * indent}" return start_str def _format_block_end(self, end_str, indent): if self._expand: return f"\n{' ' * indent}{end_str}" return end_str def _child_indent(self, indent, prefix_len): if self._expand: return indent return indent + prefix_len # Set by _format_child() immediately before it calls _format(), and # consumed there. Passing it out of band keeps _format()'s signature # unchanged for third-party subclasses that override it. _pending_prefix_len = 0 def _format_child(self, object, stream, indent, allowance, context, level, prefix_len): if self._expand: # Aligned mode folds the prefix into the indent (see # _child_indent), so only expand mode needs to report it. self._pending_prefix_len = prefix_len try: self._format(object, stream, indent, allowance, context, level) finally: self._pending_prefix_len = 0 def _write_indent_padding(self, write): if self._expand: if self._indent_per_level > 0: write(self._indent_per_level * " ") elif self._indent_per_level > 1: write((self._indent_per_level - 1) * " ") def _pprint_dataclass(self, object, stream, indent, allowance, context, level): # Lazy import to improve module import time from dataclasses import fields as dataclass_fields cls_name = object.__class__.__name__ if self._expand: indent += self._indent_per_level else: indent += len(cls_name) + 1 items = [(f.name, getattr(object, f.name)) for f in dataclass_fields(object) if f.repr] stream.write(self._format_block_start(cls_name + '(', indent)) self._format_namespace_items(items, stream, indent, allowance, context, level) stream.write(self._format_block_end(')', indent - self._indent_per_level)) _dispatch = {} def _pprint_dict(self, object, stream, indent, allowance, context, level): write = stream.write write(self._format_block_start('{', indent)) self._write_indent_padding(write) length = len(object) if length: if self._sort_dicts: items = sorted(object.items(), key=_safe_tuple) else: items = object.items() self._format_dict_items(items, stream, indent, allowance + 1, context, level) write(self._format_block_end('}', indent)) _dispatch[dict.__repr__] = _pprint_dict def _pprint_frozendict(self, object, stream, indent, allowance, context, level): write = stream.write cls = object.__class__ if not len(object): write(repr(object)) return write(self._format_block_start(cls.__name__ + "({", indent)) self._write_indent_padding(write) if self._sort_dicts: items = sorted(object.items(), key=_safe_tuple) else: items = object.items() self._format_dict_items( items, stream, self._child_indent(indent, len(cls.__name__) + 1), allowance + 2, context, level, ) write(self._format_block_end("})", indent)) _dispatch[frozendict.__repr__] = _pprint_frozendict def _pprint_ordered_dict(self, object, stream, indent, allowance, context, level): if not len(object): stream.write(repr(object)) return cls = object.__class__ stream.write(cls.__name__ + '(') self._format_child( list(object.items()), stream, self._child_indent(indent, len(cls.__name__) + 1), allowance + 1, context, level, len(cls.__name__) + 1, ) stream.write(')') _dispatch[_collections.OrderedDict.__repr__] = _pprint_ordered_dict def _pprint_dict_view(self, object, stream, indent, allowance, context, level): """Pretty print dict views (keys, values, items).""" if isinstance(object, self._dict_items_view): key = _safe_tuple else: key = _safe_key write = stream.write write( self._format_block_start(object.__class__.__name__ + "([", indent) ) if len(object): if self._sort_dicts: entries = sorted(object, key=key) else: entries = object self._format_items( entries, stream, indent, allowance + 2, context, level ) write(self._format_block_end("])", indent)) def _pprint_mapping_abc_view(self, object, stream, indent, allowance, context, level): """Pretty print mapping views from collections.abc.""" write = stream.write write(object.__class__.__name__ + '(') # Dispatch formatting to the view's _mapping self._format(object._mapping, stream, indent, allowance, context, level) write(')') _dict_keys_view = type({}.keys()) _dispatch[_dict_keys_view.__repr__] = _pprint_dict_view _dict_values_view = type({}.values()) _dispatch[_dict_values_view.__repr__] = _pprint_dict_view _dict_items_view = type({}.items()) _dispatch[_dict_items_view.__repr__] = _pprint_dict_view _dispatch[_collections.abc.MappingView.__repr__] = _pprint_mapping_abc_view _view_reprs = {cls.__repr__ for cls in (_dict_keys_view, _dict_values_view, _dict_items_view, _collections.abc.MappingView)} def _pprint_list(self, object, stream, indent, allowance, context, level): stream.write(self._format_block_start('[', indent)) self._format_items(object, stream, indent, allowance + 1, context, level) stream.write(self._format_block_end(']', indent)) _dispatch[list.__repr__] = _pprint_list def _pprint_tuple(self, object, stream, indent, allowance, context, level): stream.write(self._format_block_start('(', indent)) if len(object) == 1 and not self._expand: endchar = ',)' else: endchar = ')' self._format_items(object, stream, indent, allowance + len(endchar), context, level) stream.write(self._format_block_end(endchar, indent)) _dispatch[tuple.__repr__] = _pprint_tuple def _pprint_set(self, object, stream, indent, allowance, context, level): if not len(object): stream.write(repr(object)) return typ = object.__class__ if typ is set: stream.write(self._format_block_start('{', indent)) endchar = '}' else: stream.write(self._format_block_start(typ.__name__ + '({', indent)) endchar = '})' if not self._expand: indent += len(typ.__name__) + 1 object = sorted(object, key=_safe_key) self._format_items(object, stream, indent, allowance + len(endchar), context, level) stream.write(self._format_block_end(endchar, indent)) _dispatch[set.__repr__] = _pprint_set _dispatch[frozenset.__repr__] = _pprint_set def _pprint_str(self, object, stream, indent, allowance, context, level): write = stream.write if not len(object): write(repr(object)) return chunks = [] lines = object.splitlines(True) if level == 1: if self._expand: indent += self._indent_per_level else: indent += 1 allowance += 1 max_width1 = max_width = self._width - indent for i, line in enumerate(lines): rep = repr(line) if i == len(lines) - 1: max_width1 -= allowance if len(rep) <= max_width1: chunks.append(rep) else: # Lazy import to improve module import time import re # A list of alternating (non-space, space) strings parts = re.findall(r'\S*\s*', line) assert parts assert not parts[-1] parts.pop() # drop empty last part max_width2 = max_width current = '' for j, part in enumerate(parts): candidate = current + part if j == len(parts) - 1 and i == len(lines) - 1: max_width2 -= allowance if len(repr(candidate)) > max_width2: if current: chunks.append(repr(current)) current = part else: current = candidate if current: chunks.append(repr(current)) if len(chunks) == 1: write(rep) return if level == 1: write(self._format_block_start("(", indent)) for i, rep in enumerate(chunks): if i > 0: write('\n' + ' '*indent) write(rep) if level == 1: write(self._format_block_end(")", indent - self._indent_per_level)) _dispatch[str.__repr__] = _pprint_str def _pprint_bytes(self, object, stream, indent, allowance, context, level): write = stream.write if len(object) <= 4: write(repr(object)) return parens = level == 1 if parens: if self._expand: indent += self._indent_per_level else: indent += 1 allowance += 1 write(self._format_block_start('(', indent)) delim = '' for rep in _wrap_bytes_repr(object, self._width - indent, allowance): write(delim) write(rep) if not delim: delim = '\n' + ' '*indent if parens: write(self._format_block_end(')', indent - self._indent_per_level)) _dispatch[bytes.__repr__] = _pprint_bytes def _pprint_bytearray(self, object, stream, indent, allowance, context, level): write = stream.write write(self._format_block_start('bytearray(', indent)) if self._expand: write(' ' * self._indent_per_level) recursive_indent = indent + self._indent_per_level else: recursive_indent = indent + 10 self._pprint_bytes(bytes(object), stream, recursive_indent, allowance + 1, context, level + 1) write(self._format_block_end(')', indent)) _dispatch[bytearray.__repr__] = _pprint_bytearray def _pprint_mappingproxy(self, object, stream, indent, allowance, context, level): stream.write('mappingproxy(') self._format_child( object.copy(), stream, self._child_indent(indent, 13), allowance + 1, context, level, 13, ) stream.write(')') _dispatch[_types.MappingProxyType.__repr__] = _pprint_mappingproxy def _pprint_simplenamespace(self, object, stream, indent, allowance, context, level): if type(object) is _types.SimpleNamespace: # The SimpleNamespace repr is "namespace" instead of the class # name, so we do the same here. For subclasses; use the class name. cls_name = 'namespace' else: cls_name = object.__class__.__name__ if self._expand: indent += self._indent_per_level else: indent += len(cls_name) + 1 items = object.__dict__.items() stream.write(self._format_block_start(cls_name + '(', indent)) self._format_namespace_items(items, stream, indent, allowance, context, level) stream.write(self._format_block_end(')', indent - self._indent_per_level)) _dispatch[_types.SimpleNamespace.__repr__] = _pprint_simplenamespace def _format_dict_items(self, items, stream, indent, allowance, context, level): write = stream.write indent += self._indent_per_level delimnl = ',\n' + ' ' * indent last_index = len(items) - 1 for i, (key, ent) in enumerate(items): last = i == last_index rep = self._repr(key, context, level) write(rep) write(': ') self._format_child( ent, stream, self._child_indent(indent, len(rep) + 2), allowance if last else 1, context, level, len(rep) + 2, ) if not last: write(delimnl) elif self._expand: write(',') def _format_namespace_items(self, items, stream, indent, allowance, context, level): write = stream.write delimnl = ',\n' + ' ' * indent last_index = len(items) - 1 for i, (key, ent) in enumerate(items): last = i == last_index write(key) write('=') if id(ent) in context: # Special-case representation of recursion to match standard # recursive dataclass repr. write("...") else: self._format_child( ent, stream, self._child_indent(indent, len(key) + 1), allowance if last else 1, context, level, len(key) + 1, ) if not last: write(delimnl) elif self._expand: write(',') def _format_items(self, items, stream, indent, allowance, context, level): write = stream.write indent += self._indent_per_level self._write_indent_padding(write) delimnl = ',\n' + ' ' * indent delim = '' width = max_width = self._width - indent + 1 it = iter(items) try: next_ent = next(it) except StopIteration: return last = False while not last: ent = next_ent try: next_ent = next(it) except StopIteration: last = True max_width -= allowance width -= allowance if self._compact: rep = self._repr(ent, context, level) w = len(rep) + 2 if width < w: width = max_width if delim: delim = delimnl if width >= w: width -= w write(delim) delim = ', ' write(rep) continue write(delim) delim = delimnl self._format(ent, stream, indent, allowance if last else 1, context, level) if last and self._expand: write(',') def _repr(self, object, context, level): repr, readable, recursive = self.format(object, context.copy(), self._depth, level) if not readable: self._readable = False if recursive: self._recursive = True return repr def format(self, object, context, maxlevels, level): """Format object for a specific context, returning a string and flags indicating whether the representation is 'readable' and whether the object represents a recursive construct. """ return self._safe_repr(object, context, maxlevels, level) def _pprint_default_dict(self, object, stream, indent, allowance, context, level): if not len(object): stream.write(repr(object)) return rdf = self._repr(object.default_factory, context, level) cls = object.__class__ if self._expand: stream.write('%s(%s, ' % (cls.__name__, rdf)) else: indent += len(cls.__name__) + 1 stream.write('%s(%s,\n%s' % (cls.__name__, rdf, ' ' * indent)) self._pprint_dict(object, stream, indent, allowance + 1, context, level) stream.write(')') _dispatch[_collections.defaultdict.__repr__] = _pprint_default_dict def _pprint_counter(self, object, stream, indent, allowance, context, level): if not len(object): stream.write(repr(object)) return cls = object.__class__ stream.write(self._format_block_start(cls.__name__ + '({', indent)) self._write_indent_padding(stream.write) items = object.most_common() self._format_dict_items( items, stream, self._child_indent(indent, len(cls.__name__) + 1), allowance + 2, context, level, ) stream.write(self._format_block_end('})', indent)) _dispatch[_collections.Counter.__repr__] = _pprint_counter def _pprint_chain_map(self, object, stream, indent, allowance, context, level): if not len(object.maps): stream.write(repr(object)) return cls = object.__class__ stream.write(self._format_block_start(cls.__name__ + '(', indent + self._indent_per_level)) if self._expand: indent += self._indent_per_level else: indent += len(cls.__name__) + 1 for i, m in enumerate(object.maps): if i == len(object.maps) - 1: self._format(m, stream, indent, allowance + 1, context, level) if self._expand: stream.write(',') stream.write(self._format_block_end(')', indent - self._indent_per_level)) else: self._format(m, stream, indent, 1, context, level) stream.write(',\n' + ' ' * indent) _dispatch[_collections.ChainMap.__repr__] = _pprint_chain_map def _pprint_deque(self, object, stream, indent, allowance, context, level): if not len(object): stream.write(repr(object)) return cls = object.__class__ stream.write(self._format_block_start(cls.__name__ + '([', indent)) if not self._expand: indent += len(cls.__name__) + 1 if object.maxlen is None: self._format_items(object, stream, indent, allowance + 2, context, level) stream.write(self._format_block_end('])', indent)) else: self._format_items(object, stream, indent, 2, context, level) rml = self._repr(object.maxlen, context, level) if self._expand: stream.write('%s], maxlen=%s)' % ('\n' + ' ' * indent, rml)) else: stream.write('],\n%smaxlen=%s)' % (' ' * indent, rml)) _dispatch[_collections.deque.__repr__] = _pprint_deque def _pprint_user_dict(self, object, stream, indent, allowance, context, level): self._format(object.data, stream, indent, allowance, context, level - 1) _dispatch[_collections.UserDict.__repr__] = _pprint_user_dict def _pprint_user_list(self, object, stream, indent, allowance, context, level): self._format(object.data, stream, indent, allowance, context, level - 1) _dispatch[_collections.UserList.__repr__] = _pprint_user_list def _pprint_user_string(self, object, stream, indent, allowance, context, level): self._format(object.data, stream, indent, allowance, context, level - 1) _dispatch[_collections.UserString.__repr__] = _pprint_user_string def _pprint_template(self, object, stream, indent, allowance, context, level): cls_name = object.__class__.__name__ if self._expand: indent += self._indent_per_level else: indent += len(cls_name) + 1 items = ( ("strings", object.strings), ("interpolations", object.interpolations), ) stream.write(self._format_block_start(cls_name + "(", indent)) self._format_namespace_items( items, stream, indent, allowance, context, level ) stream.write( self._format_block_end(")", indent - self._indent_per_level) ) def _pprint_interpolation(self, object, stream, indent, allowance, context, level): cls_name = object.__class__.__name__ if self._expand: indent += self._indent_per_level items = ( ("value", object.value), ("expression", object.expression), ("conversion", object.conversion), ("format_spec", object.format_spec), ) stream.write(self._format_block_start(cls_name + "(", indent)) self._format_namespace_items( items, stream, indent, allowance, context, level ) stream.write( self._format_block_end(")", indent - self._indent_per_level) ) else: indent += len(cls_name) items = ( object.value, object.expression, object.conversion, object.format_spec, ) stream.write(cls_name + "(") self._format_items( items, stream, indent, allowance, context, level ) stream.write(")") t = t"{0}" _dispatch[type(t).__repr__] = _pprint_template _dispatch[type(t.interpolations[0]).__repr__] = _pprint_interpolation del t def _safe_repr(self, object, context, maxlevels, level): # Return triple (repr_string, isreadable, isrecursive). typ = type(object) if typ in _builtin_scalars: return repr(object), True, False r = getattr(typ, "__repr__", None) if issubclass(typ, int) and r is int.__repr__: if self._underscore_numbers: return f"{object:_d}", True, False else: return repr(object), True, False if ((issubclass(typ, dict) and r is dict.__repr__) or (issubclass(typ, frozendict) and r is frozendict.__repr__)): is_frozendict = issubclass(typ, frozendict) if not object: if is_frozendict: rep = f"{object.__class__.__name__}()" else: rep = "{}" return rep, True, False objid = id(object) if maxlevels and level >= maxlevels: rep = "{...}" if is_frozendict: rep = f"{object.__class__.__name__}({rep})" return rep, False, objid in context if objid in context: return _recursion(object), False, True context[objid] = 1 readable = True recursive = False components = [] append = components.append level += 1 if self._sort_dicts: items = sorted(object.items(), key=_safe_tuple) else: items = object.items() for k, v in items: krepr, kreadable, krecur = self.format( k, context, maxlevels, level) vrepr, vreadable, vrecur = self.format( v, context, maxlevels, level) append("%s: %s" % (krepr, vrepr)) readable = readable and kreadable and vreadable if krecur or vrecur: recursive = True del context[objid] rep = "{%s}" % ", ".join(components) if is_frozendict: rep = f"{object.__class__.__name__}({rep})" return rep, readable, recursive if (issubclass(typ, list) and r is list.__repr__) or \ (issubclass(typ, tuple) and r is tuple.__repr__): if issubclass(typ, list): if not object: return "[]", True, False format = "[%s]" elif len(object) == 1: format = "(%s,)" else: if not object: return "()", True, False format = "(%s)" objid = id(object) if maxlevels and level >= maxlevels: return format % "...", False, objid in context if objid in context: return _recursion(object), False, True context[objid] = 1 readable = True recursive = False components = [] append = components.append level += 1 for o in object: orepr, oreadable, orecur = self.format( o, context, maxlevels, level) append(orepr) if not oreadable: readable = False if orecur: recursive = True del context[objid] return format % ", ".join(components), readable, recursive if issubclass(typ, _collections.abc.MappingView) and r in self._view_reprs: objid = id(object) if maxlevels and level >= maxlevels: return "{...}", False, objid in context if objid in context: return _recursion(object), False, True key = _safe_key if issubclass(typ, (self._dict_items_view, _collections.abc.ItemsView)): key = _safe_tuple if hasattr(object, "_mapping"): # Dispatch formatting to the view's _mapping mapping_repr, readable, recursive = self.format( object._mapping, context, maxlevels, level) return (typ.__name__ + '(%s)' % mapping_repr), readable, recursive elif hasattr(typ, "_mapping"): # We have a view that somehow has lost its type's _mapping, raise # an error by calling repr() instead of failing cryptically later return repr(object), True, False if self._sort_dicts: object = sorted(object, key=key) context[objid] = 1 readable = True recursive = False components = [] append = components.append level += 1 for val in object: vrepr, vreadable, vrecur = self.format( val, context, maxlevels, level) append(vrepr) readable = readable and vreadable if vrecur: recursive = True del context[objid] return typ.__name__ + '([%s])' % ", ".join(components), readable, recursive rep = repr(object) return rep, (rep and not rep.startswith('<')), False _builtin_scalars = frozenset({str, bytes, bytearray, float, complex, bool, type(None)}) def _recursion(object): return ("<Recursion on %s with id=%s>" % (type(object).__name__, id(object))) def _wrap_bytes_repr(object, width, allowance): current = b'' last = len(object) // 4 * 4 for i in range(0, len(object), 4): part = object[i: i+4] candidate = current + part if i == last: width -= allowance if len(repr(candidate)) > width: if current: yield repr(current) current = part else: current = candidate if current: yield repr(current) |
| You are visitor 01402503 — GeezerVison does not store the pages you look up. Best viewed with Netscape Navigator 4.7 or Internet Explorer 6 at 800×600. No cookies required. |