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def html_annotate_merge_annotations(tokens_old, tokens_new): """Merge the annotations from tokens_old into tokens_new, when the tokens in the new document already existed in the old document. """ s = InsensitiveSequenceMatcher(a=tokens_old, b=tokens_new) commands = s.get_opcodes() for command,...
def copy_annotations(src, dest): """ Copy annotations from the tokens listed in src to the tokens in dest """ assert len(src) == len(dest) for src_tok, dest_tok in zip(src, dest): dest_tok.annotation = src_tok.annotation
def compress_tokens(tokens): """ Combine adjacent tokens when there is no HTML between the tokens, and they share an annotation """ result = [tokens[0]] for tok in tokens[1:]: if (not result[-1].post_tags and not tok.pre_tags and result[-1].annotation == tok....
def compress_merge_back(tokens, tok): """ Merge tok into the last element of tokens (modifying the list of tokens in-place). """ last = tokens[-1] if type(last) is not token or type(tok) is not token: tokens.append(tok) else: text = _unicode(last) if last.trailing_whitespa...
def markup_serialize_tokens(tokens, markup_func): """ Serialize the list of tokens into a list of text chunks, calling markup_func around text to add annotations. """ for token in tokens: for pre in token.pre_tags: yield pre html = token.html() html = markup_func(...
def htmldiff(old_html, new_html): ## FIXME: this should take parsed documents too, and use their body ## or other content. """ Do a diff of the old and new document. The documents are HTML *fragments* (str/UTF8 or unicode), they are not complete documents (i.e., no <html> tag). Returns HTML wi...
def htmldiff_tokens(html1_tokens, html2_tokens): """ Does a diff on the tokens themselves, returning a list of text chunks (not tokens). """ # There are several passes as we do the differences. The tokens # isolate the portion of the content we care to diff; difflib does # all the actual hard w...
def expand_tokens(tokens, equal=False): """Given a list of tokens, return a generator of the chunks of text for the data in the tokens. """ for token in tokens: for pre in token.pre_tags: yield pre if not equal or not token.hide_when_equal: if token.trailing_white...
def merge_insert(ins_chunks, doc): """ doc is the already-handled document (as a list of text chunks); here we add <ins>ins_chunks</ins> to the end of that. """ # Though we don't throw away unbalanced_start or unbalanced_end # (we assume there is accompanying markup later or earlier in the # docume...
def merge_delete(del_chunks, doc): """ Adds the text chunks in del_chunks to the document doc (another list of text chunks) with marker to show it is a delete. cleanup_delete later resolves these markers into <del> tags.""" doc.append(DEL_START) doc.extend(del_chunks) doc.append(DEL_END)
def cleanup_delete(chunks): """ Cleans up any DEL_START/DEL_END markers in the document, replacing them with <del></del>. To do this while keeping the document valid, it may need to drop some tags (either start or end tags). It may also move the del into adjacent tags to try to move it to a simila...
def split_unbalanced(chunks): """Return (unbalanced_start, balanced, unbalanced_end), where each is a list of text and tag chunks. unbalanced_start is a list of all the tags that are opened, but not closed in this span. Similarly, unbalanced_end is a list of tags that are closed but were not opene...
def split_delete(chunks): """ Returns (stuff_before_DEL_START, stuff_inside_DEL_START_END, stuff_after_DEL_END). Returns the first case found (there may be more DEL_STARTs in stuff_after_DEL_END). Raises NoDeletes if there's no DEL_START found. """ try: pos = chunks.index(DEL_START) ex...
def locate_unbalanced_start(unbalanced_start, pre_delete, post_delete): """ pre_delete and post_delete implicitly point to a place in the document (where the two were split). This moves that point (by popping items from one and pushing them onto the other). It moves the point to try to find a place wh...
def locate_unbalanced_end(unbalanced_end, pre_delete, post_delete): """ like locate_unbalanced_start, except handling end tags and possibly moving the point earlier in the document. """ while 1: if not unbalanced_end: # Success break finding = unbalanced_end[-1] ...
def tokenize(html, include_hrefs=True): """ Parse the given HTML and returns token objects (words with attached tags). This parses only the content of a page; anything in the head is ignored, and the <head> and <body> elements are themselves optional. The content is then parsed by lxml, which ensu...
def parse_html(html, cleanup=True): """ Parses an HTML fragment, returning an lxml element. Note that the HTML will be wrapped in a <div> tag that was not in the original document. If cleanup is true, make sure there's no <head> or <body>, and get rid of any <ins> and <del> tags. """ if cl...
def cleanup_html(html): """ This 'cleans' the HTML, meaning that any page structure is removed (only the contents of <body> are used, if there is any <body). Also <ins> and <del> tags are removed. """ match = _body_re.search(html) if match: html = html[match.end():] match = _end_body_re...
def split_trailing_whitespace(word): """ This function takes a word, such as 'test\n\n' and returns ('test','\n\n') """ stripped_length = len(word.rstrip()) return word[0:stripped_length], word[stripped_length:]
def fixup_chunks(chunks): """ This function takes a list of chunks and produces a list of tokens. """ tag_accum = [] cur_word = None result = [] for chunk in chunks: if isinstance(chunk, tuple): if chunk[0] == 'img': src = chunk[1] tag, tra...
def flatten_el(el, include_hrefs, skip_tag=False): """ Takes an lxml element el, and generates all the text chunks for that tag. Each start tag is a chunk, each word is a chunk, and each end tag is a chunk. If skip_tag is true, then the outermost container tag is not returned (just its contents)."...
def split_words(text): """ Splits some text into words. Includes trailing whitespace on each word when appropriate. """ if not text or not text.strip(): return [] words = split_words_re.findall(text) return words
def start_tag(el): """ The text representation of the start tag for a tag. """ return '<%s%s>' % ( el.tag, ''.join([' %s="%s"' % (name, html_escape(value, True)) for name, value in el.attrib.items()]))
def end_tag(el): """ The text representation of an end tag for a tag. Includes trailing whitespace when appropriate. """ if el.tail and start_whitespace_re.search(el.tail): extra = ' ' else: extra = '' return '</%s>%s' % (el.tag, extra)
def fixup_ins_del_tags(html): """ Given an html string, move any <ins> or <del> tags inside of any block-level elements, e.g. transform <ins><p>word</p></ins> to <p><ins>word</ins></p> """ doc = parse_html(html, cleanup=False) _fixup_ins_del_tags(doc) html = serialize_html_fragment(doc, skip_out...
def serialize_html_fragment(el, skip_outer=False): """ Serialize a single lxml element as HTML. The serialized form includes the elements tail. If skip_outer is true, then don't serialize the outermost tag """ assert not isinstance(el, basestring), ( "You should pass in an element, not a...
def _fixup_ins_del_tags(doc): """fixup_ins_del_tags that works on an lxml document in-place """ for tag in ['ins', 'del']: for el in doc.xpath('descendant-or-self::%s' % tag): if not _contains_block_level_tag(el): continue _move_el_inside_block(el, tag=tag) ...
def _contains_block_level_tag(el): """True if the element contains any block-level elements, like <p>, <td>, etc. """ if el.tag in block_level_tags or el.tag in block_level_container_tags: return True for child in el: if _contains_block_level_tag(child): return True retur...
def _move_el_inside_block(el, tag): """ helper for _fixup_ins_del_tags; actually takes the <ins> etc tags and moves them inside any block-level tags. """ for child in el: if _contains_block_level_tag(child): break else: import sys # No block-level tags in any child ...
def _merge_element_contents(el): """ Removes an element, but merges its contents into its place, e.g., given <p>Hi <i>there!</i></p>, if you remove the <i> element you get <p>Hi there!</p> """ parent = el.getparent() text = el.text or '' if el.tail: if not len(el): te...
def _iter_code(code): """Yield '(op,arg)' pair for each operation in code object 'code'""" from array import array from dis import HAVE_ARGUMENT, EXTENDED_ARG bytes = array('b',code.co_code) eof = len(code.co_code) ptr = 0 extended_arg = 0 while ptr<eof: op = bytes[ptr] ...
def extract_constant(code, symbol, default=-1): """Extract the constant value of 'symbol' from 'code' If the name 'symbol' is bound to a constant value by the Python code object 'code', return that value. If 'symbol' is bound to an expression, return 'default'. Otherwise, return 'None'. Return v...
def cache_url(self, **kwargs): """A simplified URL to be used for caching the given query.""" query = { 'Operation': self.Operation, 'Service': "AWSECommerceService", 'Version': self.Version, } query.update(kwargs) service_domain = SERVICE_DOM...
def autolink(el, link_regexes=_link_regexes, avoid_elements=_avoid_elements, avoid_hosts=_avoid_hosts, avoid_classes=_avoid_classes): """ Turn any URLs into links. It will search for links identified by the given regular expressions (by default mailto and http(s) ...
def word_break(el, max_width=40, avoid_elements=_avoid_word_break_elements, avoid_classes=_avoid_word_break_classes, break_character=unichr(0x200b)): """ Breaks any long words found in the body of the text (not attributes). Doesn't effect any of the tags in avoi...
def kill_conditional_comments(self, doc): """ IE conditional comments basically embed HTML that the parser doesn't normally see. We can't allow anything like that, so we'll kill any comments that could be conditional. """ bad = [] self._kill_elements( ...
def _has_sneaky_javascript(self, style): """ Depending on the browser, stuff like ``e x p r e s s i o n(...)`` can get interpreted, or ``expre/* stuff */ssion(...)``. This checks for attempt to do stuff like this. Typically the response will be to kill the entire style; if you ...
def document_fromstring(html, guess_charset=True, parser=None): """Parse a whole document into a string.""" if not isinstance(html, _strings): raise TypeError('string required') if parser is None: parser = html_parser return parser.parse(html, useChardet=guess_charset).getroot()
def fragments_fromstring(html, no_leading_text=False, guess_charset=False, parser=None): """Parses several HTML elements, returning a list of elements. The first item in the list may be a string. If no_leading_text is true, then it will be an error if there is leading text, and it...
def fragment_fromstring(html, create_parent=False, guess_charset=False, parser=None): """Parses a single HTML element; it is an error if there is more than one element, or if anything but whitespace precedes or follows the element. If create_parent is true (or is a tag name) the...
def fromstring(html, guess_charset=True, parser=None): """Parse the html, returning a single element/document. This tries to minimally parse the chunk of text, without knowing if it is a fragment or a document. base_url will set the document's base_url attribute (and the tree's docinfo.URL) """ ...
def parse(filename_url_or_file, guess_charset=True, parser=None): """Parse a filename, URL, or file-like object into an HTML document tree. Note: this returns a tree, not an element. Use ``parse(...).getroot()`` to get the document root. """ if parser is None: parser = html_parser if n...
def api_accepts(fields): """ Define the accept schema of an API (GET or POST). 'fields' is a dict of Django form fields keyed by field name that specifies the form-urlencoded fields that the API accepts*. The view function is then called with GET/POST data that has been cleaned by the Django f...
def api_returns(return_values): """ Define the return schema of an API. 'return_values' is a dictionary mapping HTTP return code => documentation In addition to validating that the status code of the response belongs to one of the accepted status codes, it also validates that the returned o...
def api(accept_return_dict): """ Wrapper that calls @api_accepts and @api_returns in sequence. For example: @api({ 'accepts': { 'x': forms.IntegerField(min_value=0), 'y': forms.IntegerField(min_value=0), }, 'returns': [ 200: 'Operation success...
def validate_json_request(required_fields): """ Return a decorator that ensures that the request passed to the view function/method has a valid JSON request body with the given required fields. The dict parsed from the JSON is then passed as the second argument to the decorated function/method. Fo...
def getTreeWalker(treeType, implementation=None, **kwargs): """Get a TreeWalker class for various types of tree with built-in support treeType - the name of the tree type required (case-insensitive). Supported values are: "dom" - The xml.dom.minidom DOM implementation ...
def get_include(): """ Returns a list of header include paths (for lxml itself, libxml2 and libxslt) needed to compile C code against lxml if it was built with statically linked libraries. """ import os lxml_path = __path__[0] include_path = os.path.join(lxml_path, 'includes') includ...
def export(self, location): """Export the svn repository at the url to the destination location""" url, rev = self.get_url_rev() rev_options = get_rev_options(url, rev) logger.info('Exporting svn repository %s to %s', url, location) with indent_log(): if os.path.exist...
def get_revision(self, location): """ Return the maximum revision for all files under a given location """ # Note: taken from setuptools.command.egg_info revision = 0 for base, dirs, files in os.walk(location): if self.dirname not in dirs: dir...
def setupmethod(f): """Wraps a method so that it performs a check in debug mode if the first request was already handled. """ def wrapper_func(self, *args, **kwargs): if self.debug and self._got_first_request: raise AssertionError('A setup function was called after the ' ...
def name(self): """The name of the application. This is usually the import name with the difference that it's guessed from the run file if the import name is main. This name is used as a display name when Flask needs the name of the application. It can be set and overridden to...
def propagate_exceptions(self): """Returns the value of the `PROPAGATE_EXCEPTIONS` configuration value in case it's set, otherwise a sensible default is returned. .. versionadded:: 0.7 """ rv = self.config['PROPAGATE_EXCEPTIONS'] if rv is not None: return rv ...
def logger(self): """A :class:`logging.Logger` object for this application. The default configuration is to log to stderr if the application is in debug mode. This logger can be used to (surprise) log messages. Here some examples:: app.logger.debug('A value for debugging')...
def make_config(self, instance_relative=False): """Used to create the config attribute by the Flask constructor. The `instance_relative` parameter is passed in from the constructor of Flask (there named `instance_relative_config`) and indicates if the config should be relative to the ins...
def auto_find_instance_path(self): """Tries to locate the instance path if it was not provided to the constructor of the application class. It will basically calculate the path to a folder named ``instance`` next to your main file or the package. .. versionadded:: 0.8 "...
def open_instance_resource(self, resource, mode='rb'): """Opens a resource from the application's instance folder (:attr:`instance_path`). Otherwise works like :meth:`open_resource`. Instance resources can also be opened for writing. :param resource: the name of the resource. ...
def create_jinja_environment(self): """Creates the Jinja2 environment based on :attr:`jinja_options` and :meth:`select_jinja_autoescape`. Since 0.7 this also adds the Jinja2 globals and filters after initialization. Override this function to customize the behavior. .. versiona...
def update_template_context(self, context): """Update the template context with some commonly used variables. This injects request, session, config and g into the template context as well as everything template context processors want to inject. Note that the as of Flask 0.6, the origin...
def run(self, host=None, port=None, debug=None, **options): """Runs the application on a local development server. If the :attr:`debug` flag is set the server will automatically reload for code changes and show a debugger in case an exception happened. If you want to run the applicatio...
def save_session(self, session, response): """Saves the session if it needs updates. For the default implementation, check :meth:`open_session`. Instead of overriding this method we recommend replacing the :class:`session_interface`. :param session: the session to be saved (a ...
def register_module(self, module, **options): """Registers a module with this application. The keyword argument of this function are the same as the ones for the constructor of the :class:`Module` class and will override the values of the module if provided. .. versionchanged::...
def add_url_rule(self, rule, endpoint=None, view_func=None, **options): """Connects a URL rule. Works exactly like the :meth:`route` decorator. If a view_func is provided it will be registered with the endpoint. Basically this example:: @app.route('/') def ind...
def endpoint(self, endpoint): """A decorator to register a function as an endpoint. Example:: @app.endpoint('example.endpoint') def example(): return "example" :param endpoint: the name of the endpoint """ def decorator(f): se...
def errorhandler(self, code_or_exception): """A decorator that is used to register a function give a given error code. Example:: @app.errorhandler(404) def page_not_found(error): return 'This page does not exist', 404 You can also register handlers for ...
def template_filter(self, name=None): """A decorator that is used to register custom template filter. You can specify a name for the filter, otherwise the function name will be used. Example:: @app.template_filter() def reverse(s): return s[::-1] :para...
def add_template_filter(self, f, name=None): """Register a custom template filter. Works exactly like the :meth:`template_filter` decorator. :param name: the optional name of the filter, otherwise the function name will be used. """ self.jinja_env.filters[n...
def template_global(self, name=None): """A decorator that is used to register a custom template global function. You can specify a name for the global function, otherwise the function name will be used. Example:: @app.template_global() def double(n): retu...
def add_template_global(self, f, name=None): """Register a custom template global function. Works exactly like the :meth:`template_global` decorator. .. versionadded:: 0.10 :param name: the optional name of the global function, otherwise the function name will be u...
def handle_http_exception(self, e): """Handles an HTTP exception. By default this will invoke the registered error handlers and fall back to returning the exception as response. .. versionadded:: 0.3 """ handlers = self.error_handler_spec.get(request.blueprint) ...
def trap_http_exception(self, e): """Checks if an HTTP exception should be trapped or not. By default this will return `False` for all exceptions except for a bad request key error if ``TRAP_BAD_REQUEST_ERRORS`` is set to `True`. It also returns `True` if ``TRAP_HTTP_EXCEPTIONS`` is se...
def handle_user_exception(self, e): """This method is called whenever an exception occurs that should be handled. A special case are :class:`~werkzeug.exception.HTTPException`\s which are forwarded by this function to the :meth:`handle_http_exception` method. This function will...
def handle_exception(self, e): """Default exception handling that kicks in when an exception occurs that is not caught. In debug mode the exception will be re-raised immediately, otherwise it is logged and the handler for a 500 internal server error is used. If no such handler ...
def log_exception(self, exc_info): """Logs an exception. This is called by :meth:`handle_exception` if debugging is disabled and right before the handler is called. The default implementation logs the exception as error on the :attr:`logger`. .. versionadded:: 0.8 """ ...
def raise_routing_exception(self, request): """Exceptions that are recording during routing are reraised with this method. During debug we are not reraising redirect requests for non ``GET``, ``HEAD``, or ``OPTIONS`` requests and we're raising a different error instead to help debug sit...
def dispatch_request(self): """Does the request dispatching. Matches the URL and returns the return value of the view or error handler. This does not have to be a response object. In order to convert the return value to a proper response object, call :func:`make_response`. .....
def full_dispatch_request(self): """Dispatches the request and on top of that performs request pre and postprocessing as well as HTTP exception catching and error handling. .. versionadded:: 0.7 """ self.try_trigger_before_first_request_functions() try: ...
def try_trigger_before_first_request_functions(self): """Called before each request and will ensure that it triggers the :attr:`before_first_request_funcs` and only exactly once per application instance (which means process usually). :internal: """ if self._got_first_req...
def make_default_options_response(self): """This method is called to create the default `OPTIONS` response. This can be changed through subclassing to change the default behavior of `OPTIONS` responses. .. versionadded:: 0.7 """ adapter = _request_ctx_stack.top.url_adapt...
def make_response(self, rv): """Converts the return value from a view function to a real response object that is an instance of :attr:`response_class`. The following types are allowed for `rv`: .. tabularcolumns:: |p{3.5cm}|p{9.5cm}| ======================= ===================...
def create_url_adapter(self, request): """Creates a URL adapter for the given request. The URL adapter is created at a point where the request context is not yet set up so the request is passed explicitly. .. versionadded:: 0.6 .. versionchanged:: 0.9 This can now a...
def inject_url_defaults(self, endpoint, values): """Injects the URL defaults for the given endpoint directly into the values dictionary passed. This is used internally and automatically called on URL building. .. versionadded:: 0.7 """ funcs = self.url_default_functions...
def handle_url_build_error(self, error, endpoint, values): """Handle :class:`~werkzeug.routing.BuildError` on :meth:`url_for`. """ exc_type, exc_value, tb = sys.exc_info() for handler in self.url_build_error_handlers: try: rv = handler(error, endpoint, values)...
def preprocess_request(self): """Called before the actual request dispatching and will call every as :meth:`before_request` decorated function. If any of these function returns a value it's handled as if it was the return value from the view and further request handling is stoppe...
def process_response(self, response): """Can be overridden in order to modify the response object before it's sent to the WSGI server. By default this will call all the :meth:`after_request` decorated functions. .. versionchanged:: 0.5 As of Flask 0.5 the functions registere...
def do_teardown_request(self, exc=None): """Called after the actual request dispatching and will call every as :meth:`teardown_request` decorated function. This is not actually called by the :class:`Flask` object itself but is always triggered when the request context is popped. That w...
def do_teardown_appcontext(self, exc=None): """Called when an application context is popped. This works pretty much the same as :meth:`do_teardown_request` but for the application context. .. versionadded:: 0.9 """ if exc is None: exc = sys.exc_info()[1] ...
def wsgi_app(self, environ, start_response): """The actual WSGI application. This is not implemented in `__call__` so that middlewares can be applied without losing a reference to the class. So instead of doing this:: app = MyMiddleware(app) It's a better idea to do this ...
def unique(iterable): """ Yield unique values in iterable, preserving order. """ seen = set() for value in iterable: if not value in seen: seen.add(value) yield value
def handle_requires(metadata, pkg_info, key): """ Place the runtime requirements from pkg_info into metadata. """ may_requires = defaultdict(list) for value in pkg_info.get_all(key): extra_match = EXTRA_RE.search(value) if extra_match: groupdict = extra_match.groupdict() ...
def pkginfo_to_dict(path, distribution=None): """ Convert PKG-INFO to a prototype Metadata 2.0 (PEP 426) dict. The description is included under the key ['description'] rather than being written to a separate file. path: path to PKG-INFO file distribution: optional distutils Distribution() ...
def requires_to_requires_dist(requirement): """Compose the version predicates for requirement in PEP 345 fashion.""" requires_dist = [] for op, ver in requirement.specs: requires_dist.append(op + ver) if not requires_dist: return '' return " (%s)" % ','.join(requires_dist)
def pkginfo_to_metadata(egg_info_path, pkginfo_path): """ Convert .egg-info directory with PKG-INFO to the Metadata 1.3 aka old-draft Metadata 2.0 format. """ pkg_info = read_pkg_info(pkginfo_path) pkg_info.replace_header('Metadata-Version', '2.0') requires_path = os.path.join(egg_info_path,...
def set_possible(self): ''' break up a module path to its various parts (prefix, module, class, method) this uses PEP 8 conventions, so foo.Bar would be foo module with class Bar return -- list -- a list of possible interpretations of the module path (eg, foo.bar can be bar...
def modules(self): """return modules that match module_name""" # since the module has to be importable we go ahead and put the # basepath as the very first path to check as that should minimize # namespace collisions, this is what unittest does also sys.path.insert(0, self.based...
def classes(self): """the partial self.class_name will be used to find actual TestCase classes""" for module in self.modules(): cs = inspect.getmembers(module, inspect.isclass) class_name = getattr(self, 'class_name', '') class_regex = '' if class_name: ...
def method_names(self): """return the actual test methods that matched self.method_name""" for c in self.classes(): #ms = inspect.getmembers(c, inspect.ismethod) # http://stackoverflow.com/questions/17019949/ ms = inspect.getmembers(c, lambda f: inspect.ismethod(f) or...
def _find_basename(self, name, basenames, is_prefix=False): """check if name combined with test prefixes or postfixes is found anywhere in the list of basenames :param name: string, the name you're searching for :param basenames: list, a list of basenames to check :param is_pref...
def _find_prefix_path(self, basedir, prefix): """Similar to _find_prefix_paths() but only returns the first match""" ret = "" for ret in self._find_prefix_paths(basedir, prefix): break if not ret: raise IOError("Could not find prefix {} in path {}".format(prefix,...
def _is_module_path(self, path): """Returns true if the passed in path is a test module path :param path: string, the path to check, will need to start or end with the module test prefixes or postfixes to be considered valid :returns: boolean, True if a test module path, False other...