Showing content from http://svn.python.org/projects/python/tags/r312/Lib/pydoc.py below:
': title = self.bold(name) + ' lambda ' # XXX lambda's won't usually have func_annotations['return'] # since the syntax doesn't support but it is possible. # So removing parentheses isn't truly safe. argspec = argspec[1:-1] # remove parentheses else: argspec = '(...)' decl = title + argspec + note if skipdocs: return decl + '\n' else: doc = getdoc(object) or '' return decl + '\n' + (doc and self.indent(doc).rstrip() + '\n') def _docdescriptor(self, name, value, mod): results = [] push = results.append if name: push(self.bold(name)) push('\n') doc = getdoc(value) or '' if doc: push(self.indent(doc)) push('\n') return ''.join(results) def docproperty(self, object, name=None, mod=None, cl=None): """Produce text documentation for a property.""" return self._docdescriptor(name, object, mod) def docdata(self, object, name=None, mod=None, cl=None): """Produce text documentation for a data descriptor.""" return self._docdescriptor(name, object, mod) def docother(self, object, name=None, mod=None, parent=None, maxlen=None, doc=None): """Produce text documentation for a data object.""" repr = self.repr(object) if maxlen: line = (name and name + ' = ' or '') + repr chop = maxlen - len(line) if chop < 0: repr = repr[:chop] + '...' line = (name and self.bold(name) + ' = ' or '') + repr if doc is not None: line += '\n' + self.indent(str(doc)) return line # --------------------------------------------------------- user interfaces def pager(text): """The first time this is called, determine what kind of pager to use.""" global pager pager = getpager() pager(text) def getpager(): """Decide what method to use for paging through text.""" if not hasattr(sys.stdout, "isatty"): return plainpager if not sys.stdin.isatty() or not sys.stdout.isatty(): return plainpager if 'PAGER' in os.environ: if sys.platform == 'win32': # pipes completely broken in Windows return lambda text: tempfilepager(plain(text), os.environ['PAGER']) elif os.environ.get('TERM') in ('dumb', 'emacs'): return lambda text: pipepager(plain(text), os.environ['PAGER']) else: return lambda text: pipepager(text, os.environ['PAGER']) if os.environ.get('TERM') in ('dumb', 'emacs'): return plainpager if sys.platform == 'win32' or sys.platform.startswith('os2'): return lambda text: tempfilepager(plain(text), 'more <') if hasattr(os, 'system') and os.system('(less) 2>/dev/null') == 0: return lambda text: pipepager(text, 'less') import tempfile (fd, filename) = tempfile.mkstemp() os.close(fd) try: if hasattr(os, 'system') and os.system('more "%s"' % filename) == 0: return lambda text: pipepager(text, 'more') else: return ttypager finally: os.unlink(filename) def plain(text): """Remove boldface formatting from text.""" return re.sub('.\b', '', text) def pipepager(text, cmd): """Page through text by feeding it to another program.""" pipe = os.popen(cmd, 'w') try: pipe.write(text) pipe.close() except IOError: pass # Ignore broken pipes caused by quitting the pager program. def tempfilepager(text, cmd): """Page through text by invoking a program on a temporary file.""" import tempfile filename = tempfile.mktemp() file = open(filename, 'w') file.write(text) file.close() try: os.system(cmd + ' "' + filename + '"') finally: os.unlink(filename) def ttypager(text): """Page through text on a text terminal.""" lines = plain(text).split('\n') try: import tty fd = sys.stdin.fileno() old = tty.tcgetattr(fd) tty.setcbreak(fd) getchar = lambda: sys.stdin.read(1) except (ImportError, AttributeError): tty = None getchar = lambda: sys.stdin.readline()[:-1][:1] try: r = inc = os.environ.get('LINES', 25) - 1 sys.stdout.write('\n'.join(lines[:inc]) + '\n') while lines[r:]: sys.stdout.write('-- more --') sys.stdout.flush() c = getchar() if c in ('q', 'Q'): sys.stdout.write('\r \r') break elif c in ('\r', '\n'): sys.stdout.write('\r \r' + lines[r] + '\n') r = r + 1 continue if c in ('b', 'B', '\x1b'): r = r - inc - inc if r < 0: r = 0 sys.stdout.write('\n' + '\n'.join(lines[r:r+inc]) + '\n') r = r + inc finally: if tty: tty.tcsetattr(fd, tty.TCSAFLUSH, old) def plainpager(text): """Simply print unformatted text. This is the ultimate fallback.""" sys.stdout.write(plain(text)) def describe(thing): """Produce a short description of the given thing.""" if inspect.ismodule(thing): if thing.__name__ in sys.builtin_module_names: return 'built-in module ' + thing.__name__ if hasattr(thing, '__path__'): return 'package ' + thing.__name__ else: return 'module ' + thing.__name__ if inspect.isbuiltin(thing): return 'built-in function ' + thing.__name__ if inspect.isgetsetdescriptor(thing): return 'getset descriptor %s.%s.%s' % ( thing.__objclass__.__module__, thing.__objclass__.__name__, thing.__name__) if inspect.ismemberdescriptor(thing): return 'member descriptor %s.%s.%s' % ( thing.__objclass__.__module__, thing.__objclass__.__name__, thing.__name__) if inspect.isclass(thing): return 'class ' + thing.__name__ if inspect.isfunction(thing): return 'function ' + thing.__name__ if inspect.ismethod(thing): return 'method ' + thing.__name__ return type(thing).__name__ def locate(path, forceload=0): """Locate an object by name or dotted path, importing as necessary.""" parts = [part for part in path.split('.') if part] module, n = None, 0 while n < len(parts): nextmodule = safeimport('.'.join(parts[:n+1]), forceload) if nextmodule: module, n = nextmodule, n + 1 else: break if module: object = module for part in parts[n:]: try: object = getattr(object, part) except AttributeError: return None return object else: if hasattr(builtins, path): return getattr(builtins, path) # --------------------------------------- interactive interpreter interface text = TextDoc() html = HTMLDoc() def resolve(thing, forceload=0): """Given an object or a path to an object, get the object and its name.""" if isinstance(thing, str): object = locate(thing, forceload) if not object: raise ImportError('no Python documentation found for %r' % thing) return object, thing else: return thing, getattr(thing, '__name__', None) def render_doc(thing, title='Python Library Documentation: %s', forceload=0): """Render text documentation, given an object or a path to an object.""" object, name = resolve(thing, forceload) desc = describe(object) module = inspect.getmodule(object) if name and '.' in name: desc += ' in ' + name[:name.rfind('.')] elif module and module is not object: desc += ' in module ' + module.__name__ if not (inspect.ismodule(object) or inspect.isclass(object) or inspect.isroutine(object) or inspect.isgetsetdescriptor(object) or inspect.ismemberdescriptor(object) or isinstance(object, property)): # If the passed object is a piece of data or an instance, # document its available methods instead of its value. object = type(object) desc += ' object' return title % desc + '\n\n' + text.document(object, name) def doc(thing, title='Python Library Documentation: %s', forceload=0): """Display text documentation, given an object or a path to an object.""" try: pager(render_doc(thing, title, forceload)) except (ImportError, ErrorDuringImport) as value: print(value) def writedoc(thing, forceload=0): """Write HTML documentation to a file in the current directory.""" try: object, name = resolve(thing, forceload) page = html.page(describe(object), html.document(object, name)) file = open(name + '.html', 'w', encoding='utf-8') file.write(page) file.close() print('wrote', name + '.html') except (ImportError, ErrorDuringImport) as value: print(value) def writedocs(dir, pkgpath='', done=None): """Write out HTML documentation for all modules in a directory tree.""" if done is None: done = {} for importer, modname, ispkg in pkgutil.walk_packages([dir], pkgpath): writedoc(modname) return class Helper: # These dictionaries map a topic name to either an alias, or a tuple # (label, seealso-items). The "label" is the label of the corresponding # section in the .rst file under Doc/ and an index into the dictionary # in pydoc_data/topics.py. # # CAUTION: if you change one of these dictionaries, be sure to adapt the # list of needed labels in Doc/tools/sphinxext/pyspecific.py and # regenerate the pydoc_data/topics.py file by running # make pydoc-topics # in Doc/ and copying the output file into the Lib/ directory. keywords = { 'and': 'BOOLEAN', 'as': 'with', 'assert': ('assert', ''), 'break': ('break', 'while for'), 'class': ('class', 'CLASSES SPECIALMETHODS'), 'continue': ('continue', 'while for'), 'def': ('function', ''), 'del': ('del', 'BASICMETHODS'), 'elif': 'if', 'else': ('else', 'while for'), 'except': 'try', 'finally': 'try', 'for': ('for', 'break continue while'), 'from': 'import', 'global': ('global', 'NAMESPACES'), 'if': ('if', 'TRUTHVALUE'), 'import': ('import', 'MODULES'), 'in': ('in', 'SEQUENCEMETHODS'), 'is': 'COMPARISON', 'lambda': ('lambda', 'FUNCTIONS'), 'not': 'BOOLEAN', 'or': 'BOOLEAN', 'pass': ('pass', ''), 'raise': ('raise', 'EXCEPTIONS'), 'return': ('return', 'FUNCTIONS'), 'try': ('try', 'EXCEPTIONS'), 'while': ('while', 'break continue if TRUTHVALUE'), 'with': ('with', 'CONTEXTMANAGERS EXCEPTIONS yield'), 'yield': ('yield', ''), } # Either add symbols to this dictionary or to the symbols dictionary # directly: Whichever is easier. They are merged later. _symbols_inverse = { 'STRINGS' : ("'", "'''", "r'", "b'", '"""', '"', 'r"', 'b"'), 'OPERATORS' : ('+', '-', '*', '**', '/', '//', '%', '<<', '>>', '&', '|', '^', '~', '<', '>', '<=', '>=', '==', '!=', '<>'), 'COMPARISON' : ('<', '>', '<=', '>=', '==', '!=', '<>'), 'UNARY' : ('-', '~'), 'AUGMENTEDASSIGNMENT' : ('+=', '-=', '*=', '/=', '%=', '&=', '|=', '^=', '<<=', '>>=', '**=', '//='), 'BITWISE' : ('<<', '>>', '&', '|', '^', '~'), 'COMPLEX' : ('j', 'J') } symbols = { '%': 'OPERATORS FORMATTING', '**': 'POWER', ',': 'TUPLES LISTS FUNCTIONS', '.': 'ATTRIBUTES FLOAT MODULES OBJECTS', '...': 'ELLIPSIS', ':': 'SLICINGS DICTIONARYLITERALS', '@': 'def class', '\\': 'STRINGS', '_': 'PRIVATENAMES', '__': 'PRIVATENAMES SPECIALMETHODS', '`': 'BACKQUOTES', '(': 'TUPLES FUNCTIONS CALLS', ')': 'TUPLES FUNCTIONS CALLS', '[': 'LISTS SUBSCRIPTS SLICINGS', ']': 'LISTS SUBSCRIPTS SLICINGS' } for topic, symbols_ in _symbols_inverse.items(): for symbol in symbols_: topics = symbols.get(symbol, topic) if topic not in topics: topics = topics + ' ' + topic symbols[symbol] = topics topics = { 'TYPES': ('types', 'STRINGS UNICODE NUMBERS SEQUENCES MAPPINGS ' 'FUNCTIONS CLASSES MODULES FILES inspect'), 'STRINGS': ('strings', 'str UNICODE SEQUENCES STRINGMETHODS ' 'FORMATTING TYPES'), 'STRINGMETHODS': ('string-methods', 'STRINGS FORMATTING'), 'FORMATTING': ('formatstrings', 'OPERATORS'), 'UNICODE': ('strings', 'encodings unicode SEQUENCES STRINGMETHODS ' 'FORMATTING TYPES'), 'NUMBERS': ('numbers', 'INTEGER FLOAT COMPLEX TYPES'), 'INTEGER': ('integers', 'int range'), 'FLOAT': ('floating', 'float math'), 'COMPLEX': ('imaginary', 'complex cmath'), 'SEQUENCES': ('typesseq', 'STRINGMETHODS FORMATTING range LISTS'), 'MAPPINGS': 'DICTIONARIES', 'FUNCTIONS': ('typesfunctions', 'def TYPES'), 'METHODS': ('typesmethods', 'class def CLASSES TYPES'), 'CODEOBJECTS': ('bltin-code-objects', 'compile FUNCTIONS TYPES'), 'TYPEOBJECTS': ('bltin-type-objects', 'types TYPES'), 'FRAMEOBJECTS': 'TYPES', 'TRACEBACKS': 'TYPES', 'NONE': ('bltin-null-object', ''), 'ELLIPSIS': ('bltin-ellipsis-object', 'SLICINGS'), 'FILES': ('bltin-file-objects', ''), 'SPECIALATTRIBUTES': ('specialattrs', ''), 'CLASSES': ('types', 'class SPECIALMETHODS PRIVATENAMES'), 'MODULES': ('typesmodules', 'import'), 'PACKAGES': 'import', 'EXPRESSIONS': ('operator-summary', 'lambda or and not in is BOOLEAN ' 'COMPARISON BITWISE SHIFTING BINARY FORMATTING POWER ' 'UNARY ATTRIBUTES SUBSCRIPTS SLICINGS CALLS TUPLES ' 'LISTS DICTIONARIES'), 'OPERATORS': 'EXPRESSIONS', 'PRECEDENCE': 'EXPRESSIONS', 'OBJECTS': ('objects', 'TYPES'), 'SPECIALMETHODS': ('specialnames', 'BASICMETHODS ATTRIBUTEMETHODS ' 'CALLABLEMETHODS SEQUENCEMETHODS MAPPINGMETHODS ' 'NUMBERMETHODS CLASSES'), 'BASICMETHODS': ('customization', 'hash repr str SPECIALMETHODS'), 'ATTRIBUTEMETHODS': ('attribute-access', 'ATTRIBUTES SPECIALMETHODS'), 'CALLABLEMETHODS': ('callable-types', 'CALLS SPECIALMETHODS'), 'SEQUENCEMETHODS': ('sequence-types', 'SEQUENCES SEQUENCEMETHODS ' 'SPECIALMETHODS'), 'MAPPINGMETHODS': ('sequence-types', 'MAPPINGS SPECIALMETHODS'), 'NUMBERMETHODS': ('numeric-types', 'NUMBERS AUGMENTEDASSIGNMENT ' 'SPECIALMETHODS'), 'EXECUTION': ('execmodel', 'NAMESPACES DYNAMICFEATURES EXCEPTIONS'), 'NAMESPACES': ('naming', 'global ASSIGNMENT DELETION DYNAMICFEATURES'), 'DYNAMICFEATURES': ('dynamic-features', ''), 'SCOPING': 'NAMESPACES', 'FRAMES': 'NAMESPACES', 'EXCEPTIONS': ('exceptions', 'try except finally raise'), 'CONVERSIONS': ('conversions', ''), 'IDENTIFIERS': ('identifiers', 'keywords SPECIALIDENTIFIERS'), 'SPECIALIDENTIFIERS': ('id-classes', ''), 'PRIVATENAMES': ('atom-identifiers', ''), 'LITERALS': ('atom-literals', 'STRINGS NUMBERS TUPLELITERALS ' 'LISTLITERALS DICTIONARYLITERALS'), 'TUPLES': 'SEQUENCES', 'TUPLELITERALS': ('exprlists', 'TUPLES LITERALS'), 'LISTS': ('typesseq-mutable', 'LISTLITERALS'), 'LISTLITERALS': ('lists', 'LISTS LITERALS'), 'DICTIONARIES': ('typesmapping', 'DICTIONARYLITERALS'), 'DICTIONARYLITERALS': ('dict', 'DICTIONARIES LITERALS'), 'ATTRIBUTES': ('attribute-references', 'getattr hasattr setattr ATTRIBUTEMETHODS'), 'SUBSCRIPTS': ('subscriptions', 'SEQUENCEMETHODS'), 'SLICINGS': ('slicings', 'SEQUENCEMETHODS'), 'CALLS': ('calls', 'EXPRESSIONS'), 'POWER': ('power', 'EXPRESSIONS'), 'UNARY': ('unary', 'EXPRESSIONS'), 'BINARY': ('binary', 'EXPRESSIONS'), 'SHIFTING': ('shifting', 'EXPRESSIONS'), 'BITWISE': ('bitwise', 'EXPRESSIONS'), 'COMPARISON': ('comparisons', 'EXPRESSIONS BASICMETHODS'), 'BOOLEAN': ('booleans', 'EXPRESSIONS TRUTHVALUE'), 'ASSERTION': 'assert', 'ASSIGNMENT': ('assignment', 'AUGMENTEDASSIGNMENT'), 'AUGMENTEDASSIGNMENT': ('augassign', 'NUMBERMETHODS'), 'DELETION': 'del', 'RETURNING': 'return', 'IMPORTING': 'import', 'CONDITIONAL': 'if', 'LOOPING': ('compound', 'for while break continue'), 'TRUTHVALUE': ('truth', 'if while and or not BASICMETHODS'), 'DEBUGGING': ('debugger', 'pdb'), 'CONTEXTMANAGERS': ('context-managers', 'with'), } def __init__(self, input, output): self.input = input self.output = output def __repr__(self): if inspect.stack()[1][3] == '?': self() return '' return ' ' def __call__(self, request=None): if request is not None: self.help(request) else: self.intro() self.interact() self.output.write(''' You are now leaving help and returning to the Python interpreter. If you want to ask for help on a particular object directly from the interpreter, you can type "help(object)". Executing "help('string')" has the same effect as typing a particular string at the help> prompt. ''') def interact(self): self.output.write('\n') while True: try: request = self.getline('help> ') if not request: break except (KeyboardInterrupt, EOFError): break request = replace(request, '"', '', "'", '').strip() if request.lower() in ('q', 'quit'): break self.help(request) def getline(self, prompt): """Read one line, using input() when appropriate.""" if self.input is sys.stdin: return input(prompt) else: self.output.write(prompt) self.output.flush() return self.input.readline() def help(self, request): if type(request) is type(''): request = request.strip() if request == 'help': self.intro() elif request == 'keywords': self.listkeywords() elif request == 'symbols': self.listsymbols() elif request == 'topics': self.listtopics() elif request == 'modules': self.listmodules() elif request[:8] == 'modules ': self.listmodules(request.split()[1]) elif request in self.symbols: self.showsymbol(request) elif request in self.keywords: self.showtopic(request) elif request in self.topics: self.showtopic(request) elif request: doc(request, 'Help on %s:') elif isinstance(request, Helper): self() else: doc(request, 'Help on %s:') self.output.write('\n') def intro(self): self.output.write(''' Welcome to Python %s! This is the online help utility. If this is your first time using Python, you should definitely check out the tutorial on the Internet at http://docs.python.org/tutorial/. Enter the name of any module, keyword, or topic to get help on writing Python programs and using Python modules. To quit this help utility and return to the interpreter, just type "quit". To get a list of available modules, keywords, or topics, type "modules", "keywords", or "topics". Each module also comes with a one-line summary of what it does; to list the modules whose summaries contain a given word such as "spam", type "modules spam". ''' % sys.version[:3]) def list(self, items, columns=4, width=80): items = list(sorted(items)) colw = width // columns rows = (len(items) + columns - 1) // columns for row in range(rows): for col in range(columns): i = col * rows + row if i < len(items): self.output.write(items[i]) if col < columns - 1: self.output.write(' ' + ' ' * (colw - 1 - len(items[i]))) self.output.write('\n') def listkeywords(self): self.output.write(''' Here is a list of the Python keywords. Enter any keyword to get more help. ''') self.list(self.keywords.keys()) def listsymbols(self): self.output.write(''' Here is a list of the punctuation symbols which Python assigns special meaning to. Enter any symbol to get more help. ''') self.list(self.symbols.keys()) def listtopics(self): self.output.write(''' Here is a list of available topics. Enter any topic name to get more help. ''') self.list(self.topics.keys()) def showtopic(self, topic, more_xrefs=''): try: import pydoc_data.topics except ImportError: self.output.write(''' Sorry, topic and keyword documentation is not available because the module "pydoc_data.topics" could not be found. ''') return target = self.topics.get(topic, self.keywords.get(topic)) if not target: self.output.write('no documentation found for %s\n' % repr(topic)) return if type(target) is type(''): return self.showtopic(target, more_xrefs) label, xrefs = target try: doc = pydoc_data.topics.topics[label] except KeyError: self.output.write('no documentation found for %s\n' % repr(topic)) return pager(doc.strip() + '\n') if more_xrefs: xrefs = (xrefs or '') + ' ' + more_xrefs if xrefs: import io, formatter buffer = io.StringIO() formatter.DumbWriter(buffer).send_flowing_data( 'Related help topics: ' + ', '.join(xrefs.split()) + '\n') self.output.write('\n%s\n' % buffer.getvalue()) def showsymbol(self, symbol): target = self.symbols[symbol] topic, _, xrefs = target.partition(' ') self.showtopic(topic, xrefs) def listmodules(self, key=''): if key: self.output.write(''' Here is a list of matching modules. Enter any module name to get more help. ''') apropos(key) else: self.output.write(''' Please wait a moment while I gather a list of all available modules... ''') 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) ModuleScanner().run(callback, onerror=onerror) self.list(modules.keys()) self.output.write(''' Enter any module name to get more help. Or, type "modules spam" to search for modules whose descriptions contain the word "spam". ''') help = Helper(sys.stdin, sys.stdout) class Scanner: """A generic tree iterator.""" def __init__(self, roots, children, descendp): self.roots = roots[:] self.state = [] self.children = children self.descendp = descendp def next(self): if not self.state: if not self.roots: return None root = self.roots.pop(0) self.state = [(root, self.children(root))] node, children = self.state[-1] if not children: self.state.pop() return self.next() child = children.pop(0) if self.descendp(child): self.state.append((child, self.children(child))) return child class ModuleScanner: """An interruptible scanner that searches module synopses.""" def run(self, callback, key=None, completer=None, onerror=None): if key: key = key.lower() self.quit = False seen = {} for modname in sys.builtin_module_names: if modname != '__main__': seen[modname] = 1 if key is None: callback(None, modname, '') else: name = __import__(modname).__doc__ or '' desc = name.split('\n')[0] name = modname + ' - ' + desc if name.lower().find(key) >= 0: callback(None, modname, desc) for importer, modname, ispkg in pkgutil.walk_packages(onerror=onerror): if self.quit: break if key is None: callback(None, modname, '') else: try: loader = importer.find_module(modname) except SyntaxError: # raised by tests for bad coding cookies or BOM continue if hasattr(loader, 'get_source'): try: source = loader.get_source(modname) except UnicodeDecodeError: if onerror: onerror(modname) continue import io desc = source_synopsis(io.StringIO(source)) or '' if hasattr(loader, 'get_filename'): path = loader.get_filename(modname) else: path = None else: try: module = loader.load_module(modname) except ImportError: if onerror: onerror(modname) continue desc = (module.__doc__ or '').splitlines()[0] path = getattr(module,'__file__',None) name = modname + ' - ' + desc if name.lower().find(key) >= 0: callback(path, modname, desc) if completer: completer() def apropos(key): """Print all the one-line module summaries that contain a substring.""" def callback(path, modname, desc): if modname[-9:] == '.__init__': modname = modname[:-9] + ' (package)' print(modname, desc and '- ' + desc) def onerror(modname): pass try: import warnings except ImportError: pass else: warnings.filterwarnings('ignore') # ignore problems during import ModuleScanner().run(callback, key, onerror=onerror) # --------------------------------------------------- web browser interface def serve(port, callback=None, completer=None): import http.server, email.message, select class DocHandler(http.server.BaseHTTPRequestHandler): def send_document(self, title, contents): try: self.send_response(200) self.send_header('Content-Type', 'text/html; charset=UTF-8') self.end_headers() self.wfile.write(html.page(title, contents).encode('utf-8')) except IOError: pass def do_GET(self): path = self.path if path[-5:] == '.html': path = path[:-5] if path[:1] == '/': path = path[1:] if path and path != '.': try: obj = locate(path, forceload=1) except ErrorDuringImport as value: self.send_document(path, html.escape(str(value))) return if obj: self.send_document(describe(obj), html.document(obj, path)) else: self.send_document(path, 'no Python documentation found for %s' % repr(path)) else: heading = html.heading( ' Python: Index of Modules', '#ffffff', '#7799ee') def bltinlink(name): return ' %s' % (name, name) names = [x for x in sys.builtin_module_names if x != '__main__'] contents = html.multicolumn(names, bltinlink) indices = ['
' + html.bigsection( 'Built-in Modules', '#ffffff', '#ee77aa', contents)] seen = {} for dir in sys.path: indices.append(html.index(dir, seen)) contents = heading + ' '.join(indices) + '''
pydoc by Ka-Ping Yee <ping@lfw.org>''' self.send_document('Index of Modules', contents) def log_message(self, *args): pass class DocServer(http.server.HTTPServer): def __init__(self, port, callback): host = (sys.platform == 'mac') and '127.0.0.1' or 'localhost' self.address = ('', port) self.url = 'http://%s:%d/' % (host, port) self.callback = callback self.base.__init__(self, self.address, self.handler) def serve_until_quit(self): import select self.quit = False while not self.quit: rd, wr, ex = select.select([self.socket.fileno()], [], [], 1) if rd: self.handle_request() def server_activate(self): self.base.server_activate(self) if self.callback: self.callback(self) DocServer.base = http.server.HTTPServer DocServer.handler = DocHandler DocHandler.MessageClass = email.message.Message try: try: DocServer(port, callback).serve_until_quit() except (KeyboardInterrupt, select.error): pass finally: if completer: completer() # ----------------------------------------------------- graphical interface def gui(): """Graphical interface (starts web server and pops up a control window).""" class GUI: def __init__(self, window, port=7464): self.window = window self.server = None self.scanner = None import tkinter self.server_frm = tkinter.Frame(window) self.title_lbl = tkinter.Label(self.server_frm, text='Starting server...\n ') self.open_btn = tkinter.Button(self.server_frm, text='open browser', command=self.open, state='disabled') self.quit_btn = tkinter.Button(self.server_frm, text='quit serving', command=self.quit, state='disabled') self.search_frm = tkinter.Frame(window) self.search_lbl = tkinter.Label(self.search_frm, text='Search for') self.search_ent = tkinter.Entry(self.search_frm) self.search_ent.bind(' ', self.search) self.stop_btn = tkinter.Button(self.search_frm, text='stop', pady=0, command=self.stop, state='disabled') if sys.platform == 'win32': # Trying to hide and show this button crashes under Windows. self.stop_btn.pack(side='right') self.window.title('pydoc') self.window.protocol('WM_DELETE_WINDOW', self.quit) self.title_lbl.pack(side='top', fill='x') self.open_btn.pack(side='left', fill='x', expand=1) self.quit_btn.pack(side='right', fill='x', expand=1) self.server_frm.pack(side='top', fill='x') self.search_lbl.pack(side='left') self.search_ent.pack(side='right', fill='x', expand=1) self.search_frm.pack(side='top', fill='x') self.search_ent.focus_set() font = ('helvetica', sys.platform == 'win32' and 8 or 10) self.result_lst = tkinter.Listbox(window, font=font, height=6) self.result_lst.bind(' ', self.select) self.result_lst.bind(' ', self.goto) self.result_scr = tkinter.Scrollbar(window, orient='vertical', command=self.result_lst.yview) self.result_lst.config(yscrollcommand=self.result_scr.set) self.result_frm = tkinter.Frame(window) self.goto_btn = tkinter.Button(self.result_frm, text='go to selected', command=self.goto) self.hide_btn = tkinter.Button(self.result_frm, text='hide results', command=self.hide) self.goto_btn.pack(side='left', fill='x', expand=1) self.hide_btn.pack(side='right', fill='x', expand=1) self.window.update() self.minwidth = self.window.winfo_width() self.minheight = self.window.winfo_height() self.bigminheight = (self.server_frm.winfo_reqheight() + self.search_frm.winfo_reqheight() + self.result_lst.winfo_reqheight() + self.result_frm.winfo_reqheight()) self.bigwidth, self.bigheight = self.minwidth, self.bigminheight self.expanded = 0 self.window.wm_geometry('%dx%d' % (self.minwidth, self.minheight)) self.window.wm_minsize(self.minwidth, self.minheight) self.window.tk.willdispatch() import threading threading.Thread( target=serve, args=(port, self.ready, self.quit)).start() def ready(self, server): self.server = server self.title_lbl.config( text='Python documentation server at\n' + server.url) self.open_btn.config(state='normal') self.quit_btn.config(state='normal') def open(self, event=None, url=None): url = url or self.server.url try: import webbrowser webbrowser.open(url) except ImportError: # pre-webbrowser.py compatibility if sys.platform == 'win32': os.system('start "%s"' % url) elif sys.platform == 'mac': try: import ic except ImportError: pass else: ic.launchurl(url) else: rc = os.system('netscape -remote "openURL(%s)" &' % url) if rc: os.system('netscape "%s" &' % url) def quit(self, event=None): if self.server: self.server.quit = 1 self.window.quit() def search(self, event=None): key = self.search_ent.get() self.stop_btn.pack(side='right') self.stop_btn.config(state='normal') self.search_lbl.config(text='Searching for "%s"...' % key) self.search_ent.forget() self.search_lbl.pack(side='left') self.result_lst.delete(0, 'end') self.goto_btn.config(state='disabled') self.expand() import threading if self.scanner: self.scanner.quit = 1 self.scanner = ModuleScanner() threading.Thread(target=self.scanner.run, args=(self.update, key, self.done)).start() def update(self, path, modname, desc): if modname[-9:] == '.__init__': modname = modname[:-9] + ' (package)' self.result_lst.insert('end', modname + ' - ' + (desc or '(no description)')) def stop(self, event=None): if self.scanner: self.scanner.quit = 1 self.scanner = None def done(self): self.scanner = None self.search_lbl.config(text='Search for') self.search_lbl.pack(side='left') self.search_ent.pack(side='right', fill='x', expand=1) if sys.platform != 'win32': self.stop_btn.forget() self.stop_btn.config(state='disabled') def select(self, event=None): self.goto_btn.config(state='normal') def goto(self, event=None): selection = self.result_lst.curselection() if selection: modname = self.result_lst.get(selection[0]).split()[0] self.open(url=self.server.url + modname + '.html') def collapse(self): if not self.expanded: return self.result_frm.forget() self.result_scr.forget() self.result_lst.forget() self.bigwidth = self.window.winfo_width() self.bigheight = self.window.winfo_height() self.window.wm_geometry('%dx%d' % (self.minwidth, self.minheight)) self.window.wm_minsize(self.minwidth, self.minheight) self.expanded = 0 def expand(self): if self.expanded: return self.result_frm.pack(side='bottom', fill='x') self.result_scr.pack(side='right', fill='y') self.result_lst.pack(side='top', fill='both', expand=1) self.window.wm_geometry('%dx%d' % (self.bigwidth, self.bigheight)) self.window.wm_minsize(self.minwidth, self.bigminheight) self.expanded = 1 def hide(self, event=None): self.stop() self.collapse() import tkinter try: root = tkinter.Tk() # Tk will crash if pythonw.exe has an XP .manifest # file and the root has is not destroyed explicitly. # If the problem is ever fixed in Tk, the explicit # destroy can go. try: gui = GUI(root) root.mainloop() finally: root.destroy() except KeyboardInterrupt: pass # -------------------------------------------------- command-line interface def ispath(x): return isinstance(x, str) and x.find(os.sep) >= 0 def cli(): """Command-line interface (looks at sys.argv to decide what to do).""" import getopt class BadUsage(Exception): pass # Scripts don't get the current directory in their path by default # unless they are run with the '-m' switch if '' not in sys.path: scriptdir = os.path.dirname(sys.argv[0]) if scriptdir in sys.path: sys.path.remove(scriptdir) sys.path.insert(0, '.') try: opts, args = getopt.getopt(sys.argv[1:], 'gk:p:w') writing = 0 for opt, val in opts: if opt == '-g': gui() return if opt == '-k': apropos(val) return if opt == '-p': try: port = int(val) except ValueError: raise BadUsage def ready(server): print('pydoc server ready at %s' % server.url) def stopped(): print('pydoc server stopped') serve(port, ready, stopped) return if opt == '-w': writing = 1 if not args: raise BadUsage for arg in args: if ispath(arg) and not os.path.exists(arg): print('file %r does not exist' % arg) break try: if ispath(arg) and os.path.isfile(arg): arg = importfile(arg) if writing: if ispath(arg) and os.path.isdir(arg): writedocs(arg) else: writedoc(arg) else: help.help(arg) except ErrorDuringImport as value: print(value) except (getopt.error, BadUsage): cmd = os.path.basename(sys.argv[0]) print("""pydoc - the Python documentation tool %s ... Show text documentation on something. may be the name of a Python keyword, topic, function, module, or package, or a dotted reference to a class or function within a module or module in a package. If contains a '%s', it is used as the path to a Python source file to document. If name is 'keywords', 'topics', or 'modules', a listing of these things is displayed. %s -k Search for a keyword in the synopsis lines of all available modules. %s -p Start an HTTP server on the given port on the local machine. %s -g Pop up a graphical interface for finding and serving documentation. %s -w ... Write out the HTML documentation for a module to a file in the current directory. If contains a '%s', it is treated as a filename; if it names a directory, documentation is written for all the contents. """ % (cmd, os.sep, cmd, cmd, cmd, cmd, os.sep)) if __name__ == '__main__': cli()
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