"""Integration code for CSS selectors using Soup Sieve (pypi: soupsieve)."""
import warnings
try:
import soupsieve
except ImportError as e:
soupsieve = None
warnings.warn(
'The soupsieve package is not installed. CSS selectors cannot be used.'
)
class CSS(object):
"""A proxy object against the soupsieve library, to simplify its
CSS selector API.
Acquire this object through the .css attribute on the
BeautifulSoup object, or on the Tag you want to use as the
starting point for a CSS selector.
The main advantage of doing this is that the tag to be selected
against doesn't need to be explicitly specified in the function
calls, since it's already scoped to a tag.
"""
def __init__(self, tag, api=soupsieve):
"""Constructor.
You don't need to instantiate this class yourself; instead,
access the .css attribute on the BeautifulSoup object, or on
the Tag you want to use as the starting point for your CSS
selector.
:param tag: All CSS selectors will use this as their starting
point.
:param api: A plug-in replacement for the soupsieve module,
designed mainly for use in tests.
"""
if api is None:
raise NotImplementedError(
"Cannot execute CSS selectors because the soupsieve package is not installed."
)
self.api = api
self.tag = tag
def escape(self, ident):
"""Escape a CSS identifier.
This is a simple wrapper around soupselect.escape(). See the
documentation for that function for more information.
"""
if soupsieve is None:
raise NotImplementedError(
"Cannot escape CSS identifiers because the soupsieve package is not installed."
)
return self.api.escape(ident)
def _ns(self, ns, select):
"""Normalize a dictionary of namespaces."""
if not isinstance(select, self.api.SoupSieve) and ns is None:
# If the selector is a precompiled pattern, it already has
# a namespace context compiled in, which cannot be
# replaced.
ns = self.tag._namespaces
return ns
def _rs(self, results):
"""Normalize a list of results to a Resultset.
A ResultSet is more consistent with the rest of Beautiful
Soup's API, and ResultSet.__getattr__ has a helpful error
message if you try to treat a list of results as a single
result (a common mistake).
"""
# Import here to avoid circular import
from bs4.element import ResultSet
return ResultSet(None, results)
def compile(self, select, namespaces=None, flags=0, **kwargs):
"""Pre-compile a selector and return the compiled object.
:param selector: A CSS selector.
:param namespaces: A dictionary mapping namespace prefixes
used in the CSS selector to namespace URIs. By default,
Beautiful Soup will use the prefixes it encountered while
parsing the document.
:param flags: Flags to be passed into Soup Sieve's
soupsieve.compile() method.
:param kwargs: Keyword arguments to be passed into SoupSieve's
soupsieve.compile() method.
:return: A precompiled selector object.
:rtype: soupsieve.SoupSieve
"""
return self.api.compile(
select, self._ns(namespaces, select), flags, **kwargs
)
def select_one(self, select, namespaces=None, flags=0, **kwargs):
"""Perform a CSS selection operation on the current Tag and return the
first result.
This uses the Soup Sieve library. For more information, see
that library's documentation for the soupsieve.select_one()
method.
:param selector: A CSS selector.
:param namespaces: A dictionary mapping namespace prefixes
used in the CSS selector to namespace URIs. By default,
Beautiful Soup will use the prefixes it encountered while
parsing the document.
:param flags: Flags to be passed into Soup Sieve's
soupsieve.select_one() method.
:param kwargs: Keyword arguments to be passed into SoupSieve's
soupsieve.select_one() method.
:return: A Tag, or None if the selector has no match.
:rtype: bs4.element.Tag
"""
return self.api.select_one(
select, self.tag, self._ns(namespaces, select), flags, **kwargs
)
def select(self, select, namespaces=None, limit=0, flags=0, **kwargs):
"""Perform a CSS selection operation on the current Tag.
This uses the Soup Sieve library. For more information, see
that library's documentation for the soupsieve.select()
method.
:param selector: A string containing a CSS selector.
:param namespaces: A dictionary mapping namespace prefixes
used in the CSS selector to namespace URIs. By default,
Beautiful Soup will pass in the prefixes it encountered while
parsing the document.
:param limit: After finding this number of results, stop looking.
:param flags: Flags to be passed into Soup Sieve's
soupsieve.select() method.
:param kwargs: Keyword arguments to be passed into SoupSieve's
soupsieve.select() method.
:return: A ResultSet of Tag objects.
:rtype: bs4.element.ResultSet
"""
if limit is None:
limit = 0
return self._rs(
self.api.select(
select, self.tag, self._ns(namespaces, select), limit, flags,
**kwargs
)
)
def iselect(self, select, namespaces=None, limit=0, flags=0, **kwargs):
"""Perform a CSS selection operation on the current Tag.
This uses the Soup Sieve library. For more information, see
that library's documentation for the soupsieve.iselect()
method. It is the same as select(), but it returns a generator
instead of a list.
:param selector: A string containing a CSS selector.
:param namespaces: A dictionary mapping namespace prefixes
used in the CSS selector to namespace URIs. By default,
Beautiful Soup will pass in the prefixes it encountered while
parsing the document.
:param limit: After finding this number of results, stop looking.
:param flags: Flags to be passed into Soup Sieve's
soupsieve.iselect() method.
:param kwargs: Keyword arguments to be passed into SoupSieve's
soupsieve.iselect() method.
:return: A generator
:rtype: types.GeneratorType
"""
return self.api.iselect(
select, self.tag, self._ns(namespaces, select), limit, flags, **kwargs
)
def closest(self, select, namespaces=None, flags=0, **kwargs):
"""Find the Tag closest to this one that matches the given selector.
This uses the Soup Sieve library. For more information, see
that library's documentation for the soupsieve.closest()
method.
:param selector: A string containing a CSS selector.
:param namespaces: A dictionary mapping namespace prefixes
used in the CSS selector to namespace URIs. By default,
Beautiful Soup will pass in the prefixes it encountered while
parsing the document.
:param flags: Flags to be passed into Soup Sieve's
soupsieve.closest() method.
:param kwargs: Keyword arguments to be passed into SoupSieve's
soupsieve.closest() method.
:return: A Tag, or None if there is no match.
:rtype: bs4.Tag
"""
return self.api.closest(
select, self.tag, self._ns(namespaces, select), flags, **kwargs
)
def match(self, select, namespaces=None, flags=0, **kwargs):
"""Check whether this Tag matches the given CSS selector.
This uses the Soup Sieve library. For more information, see
that library's documentation for the soupsieve.match()
method.
:param: a CSS selector.
:param namespaces: A dictionary mapping namespace prefixes
used in the CSS selector to namespace URIs. By default,
Beautiful Soup will pass in the prefixes it encountered while
parsing the document.
:param flags: Flags to be passed into Soup Sieve's
soupsieve.match() method.
:param kwargs: Keyword arguments to be passed into SoupSieve's
soupsieve.match() method.
:return: True if this Tag matches the selector; False otherwise.
:rtype: bool
"""
return self.api.match(
select, self.tag, self._ns(namespaces, select), flags, **kwargs
)
def filter(self, select, namespaces=None, flags=0, **kwargs):
"""Filter this Tag's direct children based on the given CSS selector.
This uses the Soup Sieve library. It works the same way as
passing this Tag into that library's soupsieve.filter()
method. More information, for more information see the
documentation for soupsieve.filter().
:param namespaces: A dictionary mapping namespace prefixes
used in the CSS selector to namespace URIs. By default,
Beautiful Soup will pass in the prefixes it encountered while
parsing the document.
:param flags: Flags to be passed into Soup Sieve's
soupsieve.filter() method.
:param kwargs: Keyword arguments to be passed into SoupSieve's
soupsieve.filter() method.
:return: A ResultSet of Tag objects.
:rtype: bs4.element.ResultSet
"""
return self._rs(
self.api.filter(
select, self.tag, self._ns(namespaces, select), flags, **kwargs
)
)
"But I have only one disguise in the house--the old one." "How much is it, madame?" "9. Van Hoeyaerden, member of the Town Council. 121 Previous to his forty-ninth year, Plotinus wrote nothing. At that age he began to compose short essays on subjects which suggested themselves in the course of his oral teaching. During the next ten years, he produced twenty-one such278 papers, some of them only a page or two in length. At the end of that period, he made the acquaintance of his future editor and biographer, Porphyry, a young student of Semitic extraction, whose original name was Malchus. The two soon became fast friends; and whatever speculative differences at first divided them were quickly removed by an amicable controversy between Porphyry and another disciple named Amelius, which resulted in the unreserved adhesion of the former to the doctrine of their common master.415 The literary activity of Plotinus seems to have been powerfully stimulated by association with the more methodical mind of Porphyry. During the five years416 of their personal intercourse he produced nineteen essays, amounting altogether to three times the bulk of the former series. Eight shorter pieces followed during the period of failing health which preceded his death, Porphyry being at that time absent in Sicily, whither he had retired when suffering from the fit of depression already mentioned. He did not answer at once, but sat watching the trumpeter come out of the adjutant's office to sound recall. "Yes, she will marry," he agreed; "if no one else marries her, I will. I am as old as her father would have been but it would save telling some fellow about her birth." "You must get Mrs. Landor into the post to-morrow," Cairness said abruptly; "Victorio's band is about." The next day he left for the Circle K Ranch. Lawton did not appear to need help. But he fired a Greaser, nevertheless, and took Cairness on. He seemed to stand in as abject awe of Stone's note as an Arab might have stood of a bit of the black covering of the Kaabah stone. On the 9th of January, a month after their arrival, Lord Derwentwater was impeached of high treason by Mr. Lechmere in a bitter speech in the Commons. Other members, with equal acrimony, followed with impeachments against the Lords Widdrington, Nithsdale, Wintoun, Carnwath, Kenmure, and Nairn. The impeachments were carried up to the House of Lords on the same day, and on the 19th the accused noblemen were brought before the Peers, where they knelt at the bar until they were desired to rise by the Lord Chancellor, when, with the exception of Lord Wintoun, they confessed their guilt, and threw themselves on the mercy of the king. Sentence of death was immediately pronounced on those who had pleaded guilty; and Lord Wintoun was condemned after trial, but several months later he effected his escape from the Tower. Every effort was made to save the prisoners, and they were all reprieved, with the exception of Derwentwater, Kenmure, and Nithsdale. The first two were executed; but the Countess of Nithsdale, being about to take her leave of her husband, contrived, by introducing some friends, to secure his escape in female attire. Q, 200th Ind. Rush. Yours, Jim." "Reckon I can," said Albert good-naturedly, knowing that some day he might want his brother to do the same for him. "Lie there, dog!—there goes one of the accursed council!" and, springing up the step with a giant grasp, he seized the mitred chancellor by the neck, and dragged him forth into the centre of the church. HoME有没有泷泽萝拉的呀
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