objavi/config.py

   1 # Part of Objavi2, which makes pdf versions of FLOSSManuals books.
   2 # This python module contains or encapsulates configuration and
   3 # constant data.
   4 #
   5 # Copyright (C) 2009 Douglas Bagnall
   6 #
   7 # This program is free software; you can redistribute it and/or modify
   8 # it under the terms of the GNU General Public License as published by
   9 # the Free Software Foundation; either version 2 of the License, or
  10 # (at your option) any later version.
  11 #
  12 # This program is distributed in the hope that it will be useful,
  13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 # GNU General Public License for more details.
  16 #
  17 # You should have received a copy of the GNU General Public License along
  18 # with this program; if not, write to the Free Software Foundation, Inc.,
  19 # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  20
  21 """This module contains constant values used to produce books.
  22 """
  23 #XXX eventually, read in a real config file.
  24 #XXX Some of these values should be editable via an admin cgi script
  25
  26 #Not really configurable (72 pt per inch / 25.4 mm per inch)
  27 POINT_2_MM = 25.4 / 72.0
  28 MM_2_POINT = 72.0 / 25.4
  29 INCH_2_POINT = 72
  30
  31 KEEP_TEMP_FILES=True
  32 TMPDIR = 'tmp'
  33
  34 EPUB_DIR = 'books'
  35 BOOKI_BOOK_DIR = 'booki-books'
  36
  37 FIREFOX = 'firefox'
  38 WKHTMLTOPDF = '/usr/local/bin/wkhtmltopdf-static'
  39 WKHTMLTOPDF_EXTRA_COMMANDS = []
  40
  41 HTML2ODT = './html2odt'
  42
  43 #CGITB_DOMAINS = ('203.97.236.46', '202.78.240.7')
  44 CGITB_DOMAINS = False
  45
  46 #bookland is used to make isbn barcodes
  47 BOOKLAND = 'bookland/bookland'
  48
  49 # how many pages to number in one pdfedit process (which has
  50 # exponential memory leak)
  51 PDFEDIT_MAX_PAGES = 40
  52
  53 #keep book lists around for this time without refetching
  54 BOOK_LIST_CACHE = 3600 * 2
  55 BOOK_LIST_CACHE_DIR = 'cache'
  56
  57 TOC_URL = "http://%s/pub/%s/_index/TOC.txt"
  58 CHAPTER_URL = "http://%s/bin/view/%s/%s?skin=text"
  59 PUBLISH_URL = "/books/"
  60
  61 TWIKI_GATEWAY_URL = 'http://%s/booki-twiki-gateway.cgi?server=%s&book=%s&mode=zip'
  62 BOOKI_ZIP_URL = 'http://%(server)s/export/%(book)s/export'
  63
  64 DEFAULT_SERVER = 'en.flossmanuals.net'
  65 DEFAULT_SIZE = 'COMICBOOK'
  66 DEFAULT_ENGINE = 'webkit'
  67
  68 BOOKIZIP_MIMETYPE = "application/x-booki+zip"
  69
  70 RTL_SCRIPTS = ['persian', 'arabic', 'hebrew', 'urdu']
  71
  72 USE_CACHED_IMAGES = False
  73
  74 #Normally, Book objects try to shutdown subprocesses and clean up temp
  75 #files when they __exit__.  This flag makes them try when they __del__
  76 #too (i.e. when they are garbage collected).
  77 TRY_BOOK_CLEANUP_ON_DEL = False
  78
  79 LOCALHOST = 'localhost'
  80
  81 SERVER_DEFAULTS = {
  82     'booki.flossmanuals.net': {
  83         'css-book': 'static/en.flossmanuals.net.css',
  84         'css-web': 'static/en.flossmanuals.net-web.css',
  85         'css-newspaper': 'static/en.flossmanuals.net-newspaper.css',
  86         'css-openoffice': 'static/en.flossmanuals.net-openoffice.css',
  87         'lang': 'en',
  88         'dir': 'LTR',
  89         'toc-encoding': None,
  90         'display': False,
  91         'interface': 'Booki',
  92         'toc_header': 'Table of Contents',
  93         },
  94     'www.booki.cc': {
  95         'css-book': 'static/en.flossmanuals.net.css',
  96         'css-web': 'static/en.flossmanuals.net-web.css',
  97         'css-newspaper': 'static/en.flossmanuals.net-newspaper.css',
  98         'css-openoffice': 'static/en.flossmanuals.net-openoffice.css',
  99         'lang': 'en',
 100         'dir': 'LTR',
 101         'toc-encoding': None,
 102         'display': False,
 103         'interface': 'Booki',
 104         'toc_header': 'Table of Contents',
 105         },
 106     LOCALHOST: {
 107         'css-book': 'static/en.flossmanuals.net.css',
 108         'css-web': 'static/en.flossmanuals.net-web.css',
 109         'css-newspaper': 'static/en.flossmanuals.net-newspaper.css',
 110         'css-openoffice': 'static/en.flossmanuals.net-openoffice.css',
 111         'lang': 'en',
 112         'dir': 'LTR',
 113         'toc-encoding': 'iso-8859-1',
 114         'display': False,
 115         'interface': 'local',
 116         'toc_header': 'Table of Contents',
 117         },
 118     'en.flossmanuals.net': {
 119         'css-book': 'static/en.flossmanuals.net.css',
 120         'css-web': 'static/en.flossmanuals.net-web.css',
 121         'css-newspaper': 'static/en.flossmanuals.net-newspaper.css',
 122         'css-openoffice': 'static/en.flossmanuals.net-openoffice.css',
 123         'lang': 'en',
 124         'dir': 'LTR',
 125         'toc-encoding': None,
 126         'display': True,
 127         'interface': 'TWiki',
 128         'toc_header': 'Table of Contents',
 129         },
 130     'fr.flossmanuals.net': {
 131         'css-book': 'static/fr.flossmanuals.net.css',
 132         'css-web': 'static/fr.flossmanuals.net-web.css',
 133         'css-newspaper': 'static/fr.flossmanuals.net-newspaper.css',
 134         'css': 'static/fr.flossmanuals.net.css',
 135         'css-openoffice': 'static/fr.flossmanuals.net-openoffice.css',
 136         'lang': 'fr',
 137         'dir': 'LTR',
 138         'toc-encoding': 'iso-8859-1',
 139         'display': True,
 140         'interface': 'TWiki',
 141         'toc_header': 'Table of Contents',
 142         },
 143     'translate.flossmanuals.net': {
 144         'css-book': 'static/translate.flossmanuals.net.css',
 145         'css-web': 'static/translate.flossmanuals.net-web.css',
 146         'css-newspaper': 'static/translate.flossmanuals.net-newspaper.css',
 147         'css': 'static/translate.flossmanuals.net.css',
 148         'css-openoffice': 'static/translate.flossmanuals.net-openoffice.css',
 149         'lang': None,
 150         'dir': 'auto',
 151         'toc-encoding': None,
 152         'display': True,
 153         'interface': 'TWiki',
 154         'toc_header': 'Table of Contents',
 155         },
 156     'nl.flossmanuals.net': {
 157         'css-book': 'static/nl.flossmanuals.net.css',
 158         'css-web': 'static/nl.flossmanuals.net-web.css',
 159         'css-newspaper': 'static/nl.flossmanuals.net-newspaper.css',
 160         'css': 'static/nl.flossmanuals.net.css',
 161         'css-openoffice': 'static/nl.flossmanuals.net-openoffice.css',
 162         'lang': 'nl',
 163         'dir': 'LTR',
 164         'toc-encoding': 'iso-8859-1',
 165         'display': True,
 166         'interface': 'TWiki',
 167         'toc_header': 'Table of Contents',
 168         },
 169     'bn.flossmanuals.net': {
 170         'css-book': 'static/bn.flossmanuals.net.css',
 171         'css-web': 'static/bn.flossmanuals.net-web.css',
 172         'css-newspaper': 'static/bn.flossmanuals.net-newspaper.css',
 173         'css': 'static/bn.flossmanuals.net.css',
 174         'css-openoffice': 'static/bn.flossmanuals.net-openoffice.css',
 175         'lang': 'bn',
 176         'dir': 'LTR',
 177         'toc-encoding': 'iso-8859-1',
 178         'display': True,
 179         'interface': 'TWiki',
 180         'toc_header': 'Table of Contents',
 181         },
 182     'fa.flossmanuals.net': {
 183         'css-book': 'static/fa.flossmanuals.net.css',
 184         'css-web': 'static/fa.flossmanuals.net-web.css',
 185         'css-newspaper': 'static/fa.flossmanuals.net-newspaper.css',
 186         'css': 'static/fa.flossmanuals.net.css',
 187         'css-openoffice': 'static/fa.flossmanuals.net-openoffice.css',
 188         'lang': 'fa',
 189         'dir': 'RTL',
 190         'toc-encoding': 'iso-8859-1',
 191         'display': True,
 192         'interface': 'TWiki',
 193         'toc_header': 'Table of Contents',
 194         },
 195 }
 196
 197
 198 LANGUAGE_DIR = {
 199     "ar": 'RTL',  # arabic (many variants)
 200     "dv": 'RTL',  # dhivehi, maldives islands
 201     "fa": 'RTL',  # farsi
 202     #"ha": 'RTL',  # hausa, west africa, particularly niger and nigeria
 203     "he": 'RTL',  # hebrew
 204     "ps": 'RTL',  # pashto
 205     "ur": 'RTL',  # urdu, pakistan
 206     "yi": 'RTL',  # yiddish, israel
 207 }
 208
 209 # uncomment a debug mode to get messages about that topic.
 210 DEBUG_MODES = (
 211     #'STARTUP',
 212     #'INDEX',
 213     #'PDFEDIT',
 214     #'PDFGEN',
 215     #'HTMLGEN',
 216     )
 217 DEBUG_ALL = False
 218
 219 #convert all sizes to points
 220 PAPER_SIZES = [(s, x * MM_2_POINT, y * MM_2_POINT) for s, x, y in  (
 221     ("A5", 148, 210),
 222     #("B5", 176, 250),
 223     ("A4", 210, 297),
 224     #("B4", 250, 353),
 225     ("A3", 297, 420),
 226     #("B3", 353, 500),
 227     ("A2", 420, 594),
 228     #("B2", 500, 707),
 229     ("A1", 594, 841),
 230     #("B1", 707, 1000),
 231     ("A0", 841, 1189),
 232     ("B0", 1000, 1414),
 233 )]
 234
 235 # margins are BASE_MARGIN + PROPORTIONAL_MARGIN * min(width, height)
 236 BASE_MARGIN = 22
 237 PROPORTIONAL_MARGIN = 0.04
 238 # gutter is BASE_GUTTER + PROPORTIONAL_GUTTER * width
 239 BASE_GUTTER = 15
 240 PROPORTIONAL_GUTTER = 0.011
 241
 242 PAGE_EXTREMA = {
 243     'page_width':  (1, 1000, MM_2_POINT),
 244     'page_height': (1, 1414, MM_2_POINT), #can't be bigger than biggest PAPER_SIZE
 245     'gutter': (-1000, 1000, MM_2_POINT),
 246     'top_margin': (0, 1500, MM_2_POINT),
 247     'side_margin': (0, 1500, MM_2_POINT),
 248     'bottom_margin': (0, 1500, MM_2_POINT),
 249     "columns": (1, 12, 1),
 250     "column_margin": (0, 1000, MM_2_POINT),
 251 }
 252
 253 PAGE_NUMBER_SIZE = 11 #XXX this is not used by pdfedit! (ie, it is a guess)
 254
 255 PAGE_SIZE_DATA = {
 256     'COMICBOOK':      {'pointsize': ((6.625 * 72), (10.25 * 72)), 'class': "lulu"},
 257     "POCKET":         {'pointsize': (4.25 * 72, 6.875 * 72), 'class': "lulu"},
 258
 259     "USLETTER":       {'pointsize': (8.5 * 72, 11 * 72), 'class': "lulu"},
 260     "USTRADE":        {'pointsize': (6 * 72, 9 * 72), 'class': "lulu"},
 261     "LANDSCAPE9x7":   {'pointsize': (9 * 72, 7 * 72), 'class': "lulu"},
 262     "SQUARE7.5":      {'pointsize': (7.5 * 72, 7.5 * 72), 'class': "lulu"},
 263     "ROYAL":          {'pointsize': (6.139 * 72, 9.21 * 72), 'class': "lulu"},
 264     "CROWNQUARTO":    {'pointsize': (7.444 * 72, 9.681 * 72), 'class': "lulu"},
 265     "SQUARE8.5":      {'pointsize': (8.5 * 72, 8.5 * 72), 'class': "lulu"},
 266
 267     "A5":             {'pointsize': (148 * MM_2_POINT, 210 * MM_2_POINT), 'class': "lulu iso"},
 268     "A4":             {'pointsize': (210 * MM_2_POINT, 297 * MM_2_POINT), 'class': "lulu iso"},
 269     "A3 (NZ Tabloid)": {'pointsize': (297 * MM_2_POINT, 420 * MM_2_POINT), 'class': 'iso newspaper'},
 270     "A2 (NZ Broadsheet)": {'pointsize': (420 * MM_2_POINT, 594 * MM_2_POINT), 'class': 'iso newspaper'},
 271     "A1":             {'pointsize': (594 * MM_2_POINT, 841 * MM_2_POINT), 'class': 'iso'},
 272     "B4":             {'pointsize': (250 * MM_2_POINT, 353 * MM_2_POINT), 'class': 'iso'},
 273     "B3":             {'pointsize': (353 * MM_2_POINT, 500 * MM_2_POINT), 'class': 'iso'},
 274     "B2":             {'pointsize': (500 * MM_2_POINT, 707 * MM_2_POINT), 'class': 'iso'},
 275     "B1":             {'pointsize': (707 * MM_2_POINT, 1000 * MM_2_POINT), 'class': 'iso'},
 276
 277     "UK Tabloid":     {'pointsize': (11 * INCH_2_POINT, 17 * INCH_2_POINT), 'class': 'newspaper'},
 278     "UK Broadsheet":  {'pointsize': (18 * INCH_2_POINT, 24 * INCH_2_POINT), 'class': 'newspaper'},
 279     "US Broadsheet":  {'pointsize': (15 * INCH_2_POINT, 22.75 * INCH_2_POINT), 'class': 'newspaper'},
 280     "Berliner"     :  {'pointsize': (315 * MM_2_POINT, 470 * MM_2_POINT), 'class': 'newspaper'},
 281     "Foolscap (F4)":  {'pointsize': (210 * MM_2_POINT, 330 * MM_2_POINT)},
 282
 283     "Oamaru Broadsheet":{'pointsize': (382 * MM_2_POINT, 540 * MM_2_POINT), 'class': 'newspaper'},
 284     "Oamaru Tabloid": {'pointsize': (265 * MM_2_POINT, 380 * MM_2_POINT), 'class': 'newspaper'},
 285
 286     #ODT printable 380x560
 287     #Aucklander 360x260
 288     #Dominion 376x540
 289
 290     "custom":         {'class': "custom"},
 291 }
 292
 293 MIN_COLUMN_WIDTH = (110 * MM_2_POINT)
 294
 295 ENGINES = {
 296     'webkit' : [],
 297     #'gecko' : [],
 298 }
 299
 300 INSIDE_FRONT_COVER_TEMPLATE = 'templates/inside-front-cover.%s.html'
 301 END_MATTER_TEMPLATE = 'templates/end_matter.%s.html'
 302
 303 FONT_LIST_INCLUDE = 'cache/font-list.inc'
 304 FONT_LIST_URL = '/font-list.cgi.pdf'
 305 FONT_EXAMPLE_SCRIPT_DIR = 'templates/font-list'
 306
 307 # for the license field, with a view to making it a drop down.
 308 LICENSES = {
 309     'GPL': 'http://www.gnu.org/licenses/gpl.txt',
 310     'GPLv2': 'http://www.gnu.org/licenses/gpl-2.0.txt',
 311     'GPLv2+': 'http://www.gnu.org/licenses/gpl-2.0.txt',
 312     'GPLv3': 'http://www.gnu.org/licenses/gpl-3.0.txt',
 313     'GPLv3+': 'http://www.gnu.org/licenses/gpl-3.0.txt',
 314     'LGPL': 'http://www.gnu.org/licenses/lgpl.txt',
 315     'LGPLv2.1': 'http://www.gnu.org/licenses/lgpl-2.1.txt',
 316     'LGPLv3': 'http://www.gnu.org/licenses/lgpl-3.0.txt',
 317     'BSD': 'http://www.debian.org/misc/bsd.license',
 318     'public domain': None,
 319     'MIT': 'http://www.opensource.org/licenses/mit-license.html',
 320     'Artistic': 'http://dev.perl.org/licenses/artistic.html',
 321     'CC-BY': 'http://creativecommons.org/licenses/by/3.0/',
 322     'CC-BY-SA': 'http://creativecommons.org/licenses/by-sa/3.0/',
 323 }
 324
 325 DEFAULT_LICENSE = 'GPLv2+'
 326
 327 CGI_MODES = { # arguments are: (publication, )
 328     'book': (True,),
 329     'newspaper': (True,),
 330     'web': (True,),
 331     'openoffice': (True,),
 332     'booklist': (False,),
 333     'css': (False,),
 334     'form': (False,),
 335     'epub':(True,),
 336     'bookizip':(True,),
 337 }
 338
 339 PUBLIC_CGI_MODES = tuple(k for k, v in CGI_MODES.items() if v[0])
 340
 341 #PUBLISH_DESTINATIONS
 342 PUBLISH_DESTINATIONS = {
 343     'archive.org': None,
 344     'download': None,
 345     'html': None,
 346     'nowhere': None,
 347 }
 348 DEFAULT_PUBLISH_DESTINATION = 'html'
 349
 350
 351 FORM_INPUTS = (
 352     # input, name, input type, contents key, CSS classes, extra text
 353     ("server", "FLOSS Manuals server", "select", "server_options", "", ""),
 354     ("book", "Manual", "select", "book_options", "", ""),
 355     ("title", "Book title", "input[type=text]", None, "", ""),
 356     ("license", "License", "select", "licenses", "", ""),
 357
 358     ("mode", "Document type", "select", "pdf_types", "advanced openoffice", ""),
 359     ("isbn", "ISBN", "input[type=text]", None, "advanced", "(13 digits)"),
 360     ("toc_header", "Table of Contents header", "input[type=text]", None, "advanced", ""),
 361
 362     ("booksize", "Page size", "select", "size_options", "advanced", '(Size compatibility: <span class="lulu">Lulu</span>, <span class="newspaper">newspapers</span>, <span class="iso">ISO standards</span>)'),
 363     ("page_width", "Page width", "input[type=text]", None, "advanced booksize numeric-field", ""),
 364     ("page_height", "Page height", "input[type=text]", None, "advanced booksize numeric-field", ""),
 365
 366     ("top_margin", "Top margin", "input[type=text]", None, "advanced margins numeric-field", ""),
 367     ("side_margin", "Side margin", "input[type=text]", None, "advanced margins numeric-field", ""),
 368     ("bottom_margin", "Bottom margin", "input[type=text]", None, "advanced margins numeric-field", ""),
 369     ("gutter", "Gutter", "input[type=text]", None, "advanced margins numeric-field", ""),
 370
 371     ("columns", "Columns", "input[type=text]", None, "advanced columns numeric-field", ""),
 372     ("column_margin", "Column margin", "input[type=text]", None, "advanced columns numeric-field", ""),
 373
 374     ("grey_scale", "Grey-scale", "input[type=checkbox]", 'yes', "advanced", "(for black and white printing)"),
 375
 376     #("css_customise", "Customise CSS", "input[type=checkbox]", None, "advanced", "Enter a URL or "),
 377     ("css-url", "CSS URL", "input[type=text][disabled]", "css_url", "advanced css-url openoffice", ""),
 378     ("font_list", "Available fonts", "ul", "font_list", "advanced css-custom openoffice", ""),
 379     ("font_links", "Font examples", "ul", "font_links", "advanced css-custom openoffice", ""),
 380     ("css", "CSS", "textarea", "css", "advanced css-custom openoffice", ""),
 381
 382     ("rotate", "Rotate pages for binding", "input[type=checkbox]", 'yes', "advanced", "(for RTL books on LTR printing presses, and vice versa)."),
 383     #("engine", "Layout engine", "select", "engines", "advanced", ""),
 384     #("header", "Header Text", "input[type=text]", None, "advanced", ""),
 385     ("max-age", "Use cached data", "input[type=text]", None, "advanced numeric-field", "(younger than this many minutes)."),
 386     #("destination", "Use cached data", "input[type=text]", None, "advanced", "(younger than this many minutes)."),
 387 )
 388
 389 FORM_ELEMENT_TYPES = {
 390     'input[type=text]' : '<input type="text" id="%(id)s" name="%(id)s" value="%(val)s" />',
 391     'input[type=text][disabled]' : '<input type="text" disabled="disabled" id="%(id)s" name="%(id)s" value="%(val)s" />',
 392     'input[type=checkbox]' : '<input type="checkbox" id="%(id)s" name="%(id)s" value="%(val)s" />',
 393     'textarea' : '<textarea id="%(id)s" name="%(id)s">%(val)s</textarea>',
 394     'select': '<select id="%(id)s" name="%(id)s">%(val)s</select>',
 395     'ul': '<ul id="%(id)s">%(val)s</ul>',
 396 }
 397
 398 PROGRESS_POINTS = (
 399     ("start", "wake up", PUBLIC_CGI_MODES),
 400     ("fetch_zip", "Load data", PUBLIC_CGI_MODES),
 401     ("__init__", "Initialise the book", PUBLIC_CGI_MODES),
 402     ("load_book", "Fetch the book", ('book', 'newspaper', 'web', 'openoffice')),
 403     ("add_css", "Add css", ('book', 'newspaper', 'web', 'openoffice')),
 404     ("add_section_titles", "Add section titles", ('book', 'newspaper', 'web', 'openoffice')),
 405     ("make_epub", "Make the epub file", ('epub',)),
 406     ("make_oo_doc", "Make the OpenOffice document", ('openoffice',)),
 407     ("generate_pdf", "Generate the main pdf", ('book', 'newspaper', 'web')),
 408     ("extract_pdf_outline", "Find page numbers", ('book',)),
 409     ("reshape_pdf", "Cut pages to size", ('book', 'newspaper',)),
 410     #('make_body_pdf', "Generate the main pdf", ('book', 'newspaper', 'web')),
 411     ("number_pdf", "Number pages", ('book', 'newspaper',)),
 412     ("make_contents", "Calculate Table of Contents", ('book',)),
 413     ("make_preamble_pdf", "Generate preamble pdf", ('book',)),
 414     ('make_end_matter_pdf', "Generate end matter pdf", ('book',)),
 415     ("concatenated_pdfs", "concatenate the pdfs", ('book',)),
 416     #("publish_pdf", "Publish the pdf", ('book', 'newspaper', 'web')),
 417     ("finished", "Finished!", PUBLIC_CGI_MODES),
 418 )
 419
 420 #XML namespace stuff
 421 DCNS = "{http://purl.org/dc/elements/1.1/}"
 422 DC = "http://purl.org/dc/elements/1.1/"
 423 FM = "http://booki.cc/"
 424 XHTMLNS = '{http://www.w3.org/1999/xhtml}'
 425 XHTML = 'http://www.w3.org/1999/xhtml'
 426
 427 S3_SECRET = '/home/douglas/s3.archive.org-secret'
 428 S3_ACCESSKEY = '/home/douglas/s3.archive.org-accesskey'
 429
 430 #When it is necessary to creat a navpoint ID, use this string.
 431 NAVPOINT_ID_TEMPLATE = 'chapter%s'
 432
 433 CLAIM_UNAUTHORED = False
 434
 435 IMG_CACHE = 'cache/images/'
 436
 437 USE_IMG_CACHE_ALWAYS_HOSTS = ['objavi.halo.gen.nz']
 438 USE_ZIP_CACHE_ALWAYS_HOSTS = ['objavi.halo.gen.nz']
 439
 440 IGNORABLE_TWIKI_BOOKS = ('Main', 'TWiki', 'PR', 'Trash', 'Sandbox')
 441
 442 WHITESPACE_AND_NULL = ''.join(chr(_x) for _x in range(33))
 443
 444 #how big to let epub chapters get before splitting?
 445 #sony reader has 100k compressed/300k uncompressed limit, but lets leave room to move.
 446 EPUB_COMPRESSED_SIZE_MAX = 70000
 447 EPUB_FILE_SIZE_MAX = 200000
 448
 449 #used to identify marker tags in html
 450 MARKER_CLASS = "espri-marker-name-clash-with-no-one"
 451
 452 if __name__ == '__main__':
 453     print ', '.join(x for x in globals().keys() if not x.startswith('_'))