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SF.net SVN: matplotlib: [4657] trunk/py4science
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From: <jd...@us...> - 2007-12-06 21:51:26
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Revision: 4657
http://matplotlib.svn.sourceforge.net/matplotlib/?rev=4657&view=rev
Author: jdh2358
Date: 2007-12-06 13:51:12 -0800 (Thu, 06 Dec 2007)
Log Message:
-----------
reor and fix pyrex examples
Added Paths:
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trunk/py4science/examples/
trunk/py4science/examples/BeautifulSoup.py
trunk/py4science/examples/__init__.py
trunk/py4science/examples/basemap1.py
trunk/py4science/examples/basemap2.py
trunk/py4science/examples/basemap3.py
trunk/py4science/examples/basemap4.py
trunk/py4science/examples/basemap5.py
trunk/py4science/examples/bessel.py
trunk/py4science/examples/convolution_demo.py
trunk/py4science/examples/data/
trunk/py4science/examples/data/HISTORY.gz
trunk/py4science/examples/data/ascii_data.dat
trunk/py4science/examples/data/ge.csv
trunk/py4science/examples/data/hsales.dat
trunk/py4science/examples/data/key_stats/
trunk/py4science/examples/data/key_stats/CROX_key_stats.html
trunk/py4science/examples/data/key_stats/GE_key_stats.html
trunk/py4science/examples/data/key_stats/GOOG_key_stats.html
trunk/py4science/examples/data/key_stats/INTC_key_stats.html
trunk/py4science/examples/data/key_stats/MSFT_key_stats.html
trunk/py4science/examples/data/key_stats/WMT_key_stats.html
trunk/py4science/examples/data/key_stats/YHOO_key_stats.html
trunk/py4science/examples/data/monthly_sunspots.dat
trunk/py4science/examples/data/moonlanding.jpg
trunk/py4science/examples/data/moonlanding.png
trunk/py4science/examples/data/nm560.dat
trunk/py4science/examples/data/noisy_sine.dat
trunk/py4science/examples/data/sst.nc
trunk/py4science/examples/data/synapse_data.dat
trunk/py4science/examples/data/synapse_times.dat
trunk/py4science/examples/distributions.py
trunk/py4science/examples/erathostenes.py
trunk/py4science/examples/erathostenes_fperez.py
trunk/py4science/examples/erathostenes_list.py
trunk/py4science/examples/erathostenes_set.py
trunk/py4science/examples/extras/
trunk/py4science/examples/extras/fft_demo.py
trunk/py4science/examples/extras/spec_interp.py
trunk/py4science/examples/extras/steinman_interp.py
trunk/py4science/examples/extras/weave_examples.py
trunk/py4science/examples/faces/
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Copied: trunk/py4science/examples (from rev 4639, trunk/py4science/examples)
Deleted: trunk/py4science/examples/BeautifulSoup.py
===================================================================
--- trunk/py4science/examples/BeautifulSoup.py 2007-12-06 08:44:18 UTC (rev 4639)
+++ trunk/py4science/examples/BeautifulSoup.py 2007-12-06 21:51:12 UTC (rev 4657)
@@ -1,1767 +0,0 @@
-"""Beautiful Soup
-Elixir and Tonic
-"The Screen-Scraper's Friend"
-http://www.crummy.com/software/BeautifulSoup/
-
-Beautiful Soup parses a (possibly invalid) XML or HTML document into a
-tree representation. It provides methods and Pythonic idioms that make
-it easy to navigate, search, and modify the tree.
-
-A well-formed XML/HTML document yields a well-formed data
-structure. An ill-formed XML/HTML document yields a correspondingly
-ill-formed data structure. If your document is only locally
-well-formed, you can use this library to find and process the
-well-formed part of it. The BeautifulSoup class
-
-Beautiful Soup works with Python 2.2 and up. It has no external
-dependencies, but you'll have more success at converting data to UTF-8
-if you also install these three packages:
-
-* chardet, for auto-detecting character encodings
- http://chardet.feedparser.org/
-* cjkcodecs and iconv_codec, which add more encodings to the ones supported
- by stock Python.
- http://cjkpython.i18n.org/
-
-Beautiful Soup defines classes for two main parsing strategies:
-
- * BeautifulStoneSoup, for parsing XML, SGML, or your domain-specific
- language that kind of looks like XML.
-
- * BeautifulSoup, for parsing run-of-the-mill HTML code, be it valid
- or invalid. This class has web browser-like heuristics for
- obtaining a sensible parse tree in the face of common HTML errors.
-
-Beautiful Soup also defines a class (UnicodeDammit) for autodetecting
-the encoding of an HTML or XML document, and converting it to
-Unicode. Much of this code is taken from Mark Pilgrim's Universal Feed Parser.
-
-For more than you ever wanted to know about Beautiful Soup, see the
-documentation:
-http://www.crummy.com/software/BeautifulSoup/documentation.html
-
-"""
-from __future__ import generators
-
-__author__ = "Leonard Richardson (leo...@se...)"
-__version__ = "3.0.4"
-__copyright__ = "Copyright (c) 2004-2007 Leonard Richardson"
-__license__ = "PSF"
-
-from sgmllib import SGMLParser, SGMLParseError
-import codecs
-import types
-import re
-import sgmllib
-try:
- from htmlentitydefs import name2codepoint
-except ImportError:
- name2codepoint = {}
-
-#This hack makes Beautiful Soup able to parse XML with namespaces
-sgmllib.tagfind = re.compile('[a-zA-Z][-_.:a-zA-Z0-9]*')
-
-DEFAULT_OUTPUT_ENCODING = "utf-8"
-
-# First, the classes that represent markup elements.
-
-class PageElement:
- """Contains the navigational information for some part of the page
- (either a tag or a piece of text)"""
-
- def setup(self, parent=None, previous=None):
- """Sets up the initial relations between this element and
- other elements."""
- self.parent = parent
- self.previous = previous
- self.next = None
- self.previousSibling = None
- self.nextSibling = None
- if self.parent and self.parent.contents:
- self.previousSibling = self.parent.contents[-1]
- self.previousSibling.nextSibling = self
-
- def replaceWith(self, replaceWith):
- oldParent = self.parent
- myIndex = self.parent.contents.index(self)
- if hasattr(replaceWith, 'parent') and replaceWith.parent == self.parent:
- # We're replacing this element with one of its siblings.
- index = self.parent.contents.index(replaceWith)
- if index and index < myIndex:
- # Furthermore, it comes before this element. That
- # means that when we extract it, the index of this
- # element will change.
- myIndex = myIndex - 1
- self.extract()
- oldParent.insert(myIndex, replaceWith)
-
- def extract(self):
- """Destructively rips this element out of the tree."""
- if self.parent:
- try:
- self.parent.contents.remove(self)
- except ValueError:
- pass
-
- #Find the two elements that would be next to each other if
- #this element (and any children) hadn't been parsed. Connect
- #the two.
- lastChild = self._lastRecursiveChild()
- nextElement = lastChild.next
-
- if self.previous:
- self.previous.next = nextElement
- if nextElement:
- nextElement.previous = self.previous
- self.previous = None
- lastChild.next = None
-
- self.parent = None
- if self.previousSibling:
- self.previousSibling.nextSibling = self.nextSibling
- if self.nextSibling:
- self.nextSibling.previousSibling = self.previousSibling
- self.previousSibling = self.nextSibling = None
-
- def _lastRecursiveChild(self):
- "Finds the last element beneath this object to be parsed."
- lastChild = self
- while hasattr(lastChild, 'contents') and lastChild.contents:
- lastChild = lastChild.contents[-1]
- return lastChild
-
- def insert(self, position, newChild):
- if (isinstance(newChild, basestring)
- or isinstance(newChild, unicode)) \
- and not isinstance(newChild, NavigableString):
- newChild = NavigableString(newChild)
-
- position = min(position, len(self.contents))
- if hasattr(newChild, 'parent') and newChild.parent != None:
- # We're 'inserting' an element that's already one
- # of this object's children.
- if newChild.parent == self:
- index = self.find(newChild)
- if index and index < position:
- # Furthermore we're moving it further down the
- # list of this object's children. That means that
- # when we extract this element, our target index
- # will jump down one.
- position = position - 1
- newChild.extract()
-
- newChild.parent = self
- previousChild = None
- if position == 0:
- newChild.previousSibling = None
- newChild.previous = self
- else:
- previousChild = self.contents[position-1]
- newChild.previousSibling = previousChild
- newChild.previousSibling.nextSibling = newChild
- newChild.previous = previousChild._lastRecursiveChild()
- if newChild.previous:
- newChild.previous.next = newChild
-
- newChildsLastElement = newChild._lastRecursiveChild()
-
- if position >= len(self.contents):
- newChild.nextSibling = None
-
- parent = self
- parentsNextSibling = None
- while not parentsNextSibling:
- parentsNextSibling = parent.nextSibling
- parent = parent.parent
- if not parent: # This is the last element in the document.
- break
- if parentsNextSibling:
- newChildsLastElement.next = parentsNextSibling
- else:
- newChildsLastElement.next = None
- else:
- nextChild = self.contents[position]
- newChild.nextSibling = nextChild
- if newChild.nextSibling:
- newChild.nextSibling.previousSibling = newChild
- newChildsLastElement.next = nextChild
-
- if newChildsLastElement.next:
- newChildsLastElement.next.previous = newChildsLastElement
- self.contents.insert(position, newChild)
-
- def findNext(self, name=None, attrs={}, text=None, **kwargs):
- """Returns the first item that matches the given criteria and
- appears after this Tag in the document."""
- return self._findOne(self.findAllNext, name, attrs, text, **kwargs)
-
- def findAllNext(self, name=None, attrs={}, text=None, limit=None,
- **kwargs):
- """Returns all items that match the given criteria and appear
- before after Tag in the document."""
- return self._findAll(name, attrs, text, limit, self.nextGenerator)
-
- def findNextSibling(self, name=None, attrs={}, text=None, **kwargs):
- """Returns the closest sibling to this Tag that matches the
- given criteria and appears after this Tag in the document."""
- return self._findOne(self.findNextSiblings, name, attrs, text,
- **kwargs)
-
- def findNextSiblings(self, name=None, attrs={}, text=None, limit=None,
- **kwargs):
- """Returns the siblings of this Tag that match the given
- criteria and appear after this Tag in the document."""
- return self._findAll(name, attrs, text, limit,
- self.nextSiblingGenerator, **kwargs)
- fetchNextSiblings = findNextSiblings # Compatibility with pre-3.x
-
- def findPrevious(self, name=None, attrs={}, text=None, **kwargs):
- """Returns the first item that matches the given criteria and
- appears before this Tag in the document."""
- return self._findOne(self.findAllPrevious, name, attrs, text, **kwargs)
-
- def findAllPrevious(self, name=None, attrs={}, text=None, limit=None,
- **kwargs):
- """Returns all items that match the given criteria and appear
- before this Tag in the document."""
- return self._findAll(name, attrs, text, limit, self.previousGenerator,
- **kwargs)
- fetchPrevious = findAllPrevious # Compatibility with pre-3.x
-
- def findPreviousSibling(self, name=None, attrs={}, text=None, **kwargs):
- """Returns the closest sibling to this Tag that matches the
- given criteria and appears before this Tag in the document."""
- return self._findOne(self.findPreviousSiblings, name, attrs, text,
- **kwargs)
-
- def findPreviousSiblings(self, name=None, attrs={}, text=None,
- limit=None, **kwargs):
- """Returns the siblings of this Tag that match the given
- criteria and appear before this Tag in the document."""
- return self._findAll(name, attrs, text, limit,
- self.previousSiblingGenerator, **kwargs)
- fetchPreviousSiblings = findPreviousSiblings # Compatibility with pre-3.x
-
- def findParent(self, name=None, attrs={}, **kwargs):
- """Returns the closest parent of this Tag that matches the given
- criteria."""
- # NOTE: We can't use _findOne because findParents takes a different
- # set of arguments.
- r = None
- l = self.findParents(name, attrs, 1)
- if l:
- r = l[0]
- return r
-
- def findParents(self, name=None, attrs={}, limit=None, **kwargs):
- """Returns the parents of this Tag that match the given
- criteria."""
-
- return self._findAll(name, attrs, None, limit, self.parentGenerator,
- **kwargs)
- fetchParents = findParents # Compatibility with pre-3.x
-
- #These methods do the real heavy lifting.
-
- def _findOne(self, method, name, attrs, text, **kwargs):
- r = None
- l = method(name, attrs, text, 1, **kwargs)
- if l:
- r = l[0]
- return r
-
- def _findAll(self, name, attrs, text, limit, generator, **kwargs):
- "Iterates over a generator looking for things that match."
-
- if isinstance(name, SoupStrainer):
- strainer = name
- else:
- # Build a SoupStrainer
- strainer = SoupStrainer(name, attrs, text, **kwargs)
- results = ResultSet(strainer)
- g = generator()
- while True:
- try:
- i = g.next()
- except StopIteration:
- break
- if i:
- found = strainer.search(i)
- if found:
- results.append(found)
- if limit and len(results) >= limit:
- break
- return results
-
- #These Generators can be used to navigate starting from both
- #NavigableStrings and Tags.
- def nextGenerator(self):
- i = self
- while i:
- i = i.next
- yield i
-
- def nextSiblingGenerator(self):
- i = self
- while i:
- i = i.nextSibling
- yield i
-
- def previousGenerator(self):
- i = self
- while i:
- i = i.previous
- yield i
-
- def previousSiblingGenerator(self):
- i = self
- while i:
- i = i.previousSibling
- yield i
-
- def parentGenerator(self):
- i = self
- while i:
- i = i.parent
- yield i
-
- # Utility methods
- def substituteEncoding(self, str, encoding=None):
- encoding = encoding or "utf-8"
- return str.replace("%SOUP-ENCODING%", encoding)
-
- def toEncoding(self, s, encoding=None):
- """Encodes an object to a string in some encoding, or to Unicode.
- ."""
- if isinstance(s, unicode):
- if encoding:
- s = s.encode(encoding)
- elif isinstance(s, str):
- if encoding:
- s = s.encode(encoding)
- else:
- s = unicode(s)
- else:
- if encoding:
- s = self.toEncoding(str(s), encoding)
- else:
- s = unicode(s)
- return s
-
-class NavigableString(unicode, PageElement):
-
- def __getattr__(self, attr):
- """text.string gives you text. This is for backwards
- compatibility for Navigable*String, but for CData* it lets you
- get the string without the CData wrapper."""
- if attr == 'string':
- return self
- else:
- raise AttributeError, "'%s' object has no attribute '%s'" % (self.__class__.__name__, attr)
-
- def __unicode__(self):
- return self.__str__(None)
-
- def __str__(self, encoding=DEFAULT_OUTPUT_ENCODING):
- if encoding:
- return self.encode(encoding)
- else:
- return self
-
-class CData(NavigableString):
-
- def __str__(self, encoding=DEFAULT_OUTPUT_ENCODING):
- return "<![CDATA[%s]]>" % NavigableString.__str__(self, encoding)
-
-class ProcessingInstruction(NavigableString):
- def __str__(self, encoding=DEFAULT_OUTPUT_ENCODING):
- output = self
- if "%SOUP-ENCODING%" in output:
- output = self.substituteEncoding(output, encoding)
- return "<?%s?>" % self.toEncoding(output, encoding)
-
-class Comment(NavigableString):
- def __str__(self, encoding=DEFAULT_OUTPUT_ENCODING):
- return "<!--%s-->" % NavigableString.__str__(self, encoding)
-
-class Declaration(NavigableString):
- def __str__(self, encoding=DEFAULT_OUTPUT_ENCODING):
- return "<!%s>" % NavigableString.__str__(self, encoding)
-
-class Tag(PageElement):
-
- """Represents a found HTML tag with its attributes and contents."""
-
- XML_SPECIAL_CHARS_TO_ENTITIES = { "'" : "squot",
- '"' : "quote",
- "&" : "amp",
- "<" : "lt",
- ">" : "gt" }
-
- def __init__(self, parser, name, attrs=None, parent=None,
- previous=None):
- "Basic constructor."
-
- # We don't actually store the parser object: that lets extracted
- # chunks be garbage-collected
- self.parserClass = parser.__class__
- self.isSelfClosing = parser.isSelfClosingTag(name)
- self.name = name
- if attrs == None:
- attrs = []
- self.attrs = attrs
- self.contents = []
- self.setup(parent, previous)
- self.hidden = False
- self.containsSubstitutions = False
-
- def get(self, key, default=None):
- """Returns the value of the 'key' attribute for the tag, or
- the value given for 'default' if it doesn't have that
- attribute."""
- return self._getAttrMap().get(key, default)
-
- def has_key(self, key):
- return self._getAttrMap().has_key(key)
-
- def __getitem__(self, key):
- """tag[key] returns the value of the 'key' attribute for the tag,
- and throws an exception if it's not there."""
- return self._getAttrMap()[key]
-
- def __iter__(self):
- "Iterating over a tag iterates over its contents."
- return iter(self.contents)
-
- def __len__(self):
- "The length of a tag is the length of its list of contents."
- return len(self.contents)
-
- def __contains__(self, x):
- return x in self.contents
-
- def __nonzero__(self):
- "A tag is non-None even if it has no contents."
- return True
-
- def __setitem__(self, key, value):
- """Setting tag[key] sets the value of the 'key' attribute for the
- tag."""
- self._getAttrMap()
- self.attrMap[key] = value
- found = False
- for i in range(0, len(self.attrs)):
- if self.attrs[i][0] == key:
- self.attrs[i] = (key, value)
- found = True
- if not found:
- self.attrs.append((key, value))
- self._getAttrMap()[key] = value
-
- def __delitem__(self, key):
- "Deleting tag[key] deletes all 'key' attributes for the tag."
- for item in self.attrs:
- if item[0] == key:
- self.attrs.remove(item)
- #We don't break because bad HTML can define the same
- #attribute multiple times.
- self._getAttrMap()
- if self.attrMap.has_key(key):
- del self.attrMap[key]
-
- def __call__(self, *args, **kwargs):
- """Calling a tag like a function is the same as calling its
- findAll() method. Eg. tag('a') returns a list of all the A tags
- found within this tag."""
- return apply(self.findAll, args, kwargs)
-
- def __getattr__(self, tag):
- #print "Getattr %s.%s" % (self.__class__, tag)
- if len(tag) > 3 and tag.rfind('Tag') == len(tag)-3:
- return self.find(tag[:-3])
- elif tag.find('__') != 0:
- return self.find(tag)
-
- def __eq__(self, other):
- """Returns true iff this tag has the same name, the same attributes,
- and the same contents (recursively) as the given tag.
-
- NOTE: right now this will return false if two tags have the
- same attributes in a different order. Should this be fixed?"""
- if not hasattr(other, 'name') or not hasattr(other, 'attrs') or not hasattr(other, 'contents') or self.name != other.name or self.attrs != other.attrs or len(self) != len(other):
- return False
- for i in range(0, len(self.contents)):
- if self.contents[i] != other.contents[i]:
- return False
- return True
-
- def __ne__(self, other):
- """Returns true iff this tag is not identical to the other tag,
- as defined in __eq__."""
- return not self == other
-
- def __repr__(self, encoding=DEFAULT_OUTPUT_ENCODING):
- """Renders this tag as a string."""
- return self.__str__(encoding)
-
- def __unicode__(self):
- return self.__str__(None)
-
- def __str__(self, encoding=DEFAULT_OUTPUT_ENCODING,
- prettyPrint=False, indentLevel=0):
- """Returns a string or Unicode representation of this tag and
- its contents. To get Unicode, pass None for encoding.
-
- NOTE: since Python's HTML parser consumes whitespace, this
- method is not certain to reproduce the whitespace present in
- the original string."""
-
- encodedName = self.toEncoding(self.name, encoding)
-
- attrs = []
- if self.attrs:
- for key, val in self.attrs:
- fmt = '%s="%s"'
- if isString(val):
- if self.containsSubstitutions and '%SOUP-ENCODING%' in val:
- val = self.substituteEncoding(val, encoding)
-
- # The attribute value either:
- #
- # * Contains no embedded double quotes or single quotes.
- # No problem: we enclose it in double quotes.
- # * Contains embedded single quotes. No problem:
- # double quotes work here too.
- # * Contains embedded double quotes. No problem:
- # we enclose it in single quotes.
- # * Embeds both single _and_ double quotes. This
- # can't happen naturally, but it can happen if
- # you modify an attribute value after parsing
- # the document. Now we have a bit of a
- # problem. We solve it by enclosing the
- # attribute in single quotes, and escaping any
- # embedded single quotes to XML entities.
- if '"' in val:
- fmt = "%s='%s'"
- # This can't happen naturally, but it can happen
- # if you modify an attribute value after parsing.
- if "'" in val:
- val = val.replace("'", "&squot;")
-
- # Now we're okay w/r/t quotes. But the attribute
- # value might also contain angle brackets, or
- # ampersands that aren't part of entities. We need
- # to escape those to XML entities too.
- val = re.sub("([<>]|&(?![^\s]+;))",
- lambda x: "&" + self.XML_SPECIAL_CHARS_TO_ENTITIES[x.group(0)[0]] + ";",
- val)
-
- attrs.append(fmt % (self.toEncoding(key, encoding),
- self.toEncoding(val, encoding)))
- close = ''
- closeTag = ''
- if self.isSelfClosing:
- close = ' /'
- else:
- closeTag = '</%s>' % encodedName
-
- indentTag, indentContents = 0, 0
- if prettyPrint:
- indentTag = indentLevel
- space = (' ' * (indentTag-1))
- indentContents = indentTag + 1
- contents = self.renderContents(encoding, prettyPrint, indentContents)
- if self.hidden:
- s = contents
- else:
- s = []
- attributeString = ''
- if attrs:
- attributeString = ' ' + ' '.join(attrs)
- if prettyPrint:
- s.append(space)
- s.append('<%s%s%s>' % (encodedName, attributeString, close))
- if prettyPrint:
- s.append("\n")
- s.append(contents)
- if prettyPrint and contents and contents[-1] != "\n":
- s.append("\n")
- if prettyPrint and closeTag:
- s.append(space)
- s.append(closeTag)
- if prettyPrint and closeTag and self.nextSibling:
- s.append("\n")
- s = ''.join(s)
- return s
-
- def prettify(self, encoding=DEFAULT_OUTPUT_ENCODING):
- return self.__str__(encoding, True)
-
- def renderContents(self, encoding=DEFAULT_OUTPUT_ENCODING,
- prettyPrint=False, ...
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