Python re 模块，UNICODE 实例源码
我们从Python开源项目中，提取了以下49个代码示例，用于说明如何使用re.UNICODE。
def str_flags_to_int(str_flags):
flags = 0
if "i" in str_flags:
flags |= re.IGNORECASE
if "l" in str_flags:
flags |= re.LOCALE
if "m" in str_flags:
flags |= re.MULTILINE
if "s" in str_flags:
flags |= re.DOTALL
if "u" in str_flags:
flags |= re.UNICODE
if "x" in str_flags:
flags |= re.VERBOSE
return flags
def _encode_regex(name, value, dummy0, dummy1):
"""Encode a python regex or bson.regex.Regex."""
flags = value.flags
# Python 2 common case
if flags == 0:
return b"\x0B" + name + _make_c_string_check(value.pattern) + b"\x00"
# Python 3 common case
elif flags == re.UNICODE:
return b"\x0B" + name + _make_c_string_check(value.pattern) + b"u\x00"
else:
sflags = b""
if flags & re.IGNORECASE:
sflags += b"i"
if flags & re.LOCALE:
sflags += b"l"
if flags & re.MULTILINE:
sflags += b"m"
if flags & re.DOTALL:
sflags += b"s"
if flags & re.UNICODE:
sflags += b"u"
if flags & re.VERBOSE:
sflags += b"x"
sflags += b"\x00"
return b"\x0B" + name + _make_c_string_check(value.pattern) + sflags
def __init__(self, **kwargs):
"""Construct a TINYTEXT.
:param charset: Optional, a column-level character set for this string
value. Takes precedence to 'ascii' or 'unicode' short-hand.
:param collation: Optional, a column-level collation for this string
value. Takes precedence to 'binary' short-hand.
:param ascii: Defaults to False: short-hand for the ``latin1``
character set, generates ASCII in schema.
:param unicode: Defaults to False: short-hand for the ``ucs2``
character set, generates UNICODE in schema.
:param national: Optional. If true, use the server's configured
national character set.
:param binary: Defaults to False: short-hand, pick the binary
collation type that matches the column's character set. Generates
BINARY in schema. This does not affect the type of data stored,
only the collation of character data.
"""
super(TINYTEXT, self).__init__(**kwargs)
def __init__(self, **kwargs):
"""Construct a MEDIUMTEXT.
:param charset: Optional, a column-level character set for this string
value. Takes precedence to 'ascii' or 'unicode' short-hand.
:param collation: Optional, a column-level collation for this string
value. Takes precedence to 'binary' short-hand.
:param ascii: Defaults to False: short-hand for the ``latin1``
character set, generates ASCII in schema.
:param unicode: Defaults to False: short-hand for the ``ucs2``
character set, generates UNICODE in schema.
:param national: Optional. If true, use the server's configured
national character set.
:param binary: Defaults to False: short-hand, pick the binary
collation type that matches the column's character set. Generates
BINARY in schema. This does not affect the type of data stored,
only the collation of character data.
"""
super(MEDIUMTEXT, self).__init__(**kwargs)
def __init__(self, **kwargs):
"""Construct a LONGTEXT.
:param charset: Optional, a column-level character set for this string
value. Takes precedence to 'ascii' or 'unicode' short-hand.
:param collation: Optional, a column-level collation for this string
value. Takes precedence to 'binary' short-hand.
:param ascii: Defaults to False: short-hand for the ``latin1``
character set, generates ASCII in schema.
:param unicode: Defaults to False: short-hand for the ``ucs2``
character set, generates UNICODE in schema.
:param national: Optional. If true, use the server's configured
national character set.
:param binary: Defaults to False: short-hand, pick the binary
collation type that matches the column's character set. Generates
BINARY in schema. This does not affect the type of data stored,
only the collation of character data.
"""
super(LONGTEXT, self).__init__(**kwargs)
def __init__(self, length=None, **kwargs):
"""Construct a VARCHAR.
:param charset: Optional, a column-level character set for this string
value. Takes precedence to 'ascii' or 'unicode' short-hand.
:param collation: Optional, a column-level collation for this string
value. Takes precedence to 'binary' short-hand.
:param ascii: Defaults to False: short-hand for the ``latin1``
character set, generates ASCII in schema.
:param unicode: Defaults to False: short-hand for the ``ucs2``
character set, generates UNICODE in schema.
:param national: Optional. If true, use the server's configured
national character set.
:param binary: Defaults to False: short-hand, pick the binary
collation type that matches the column's character set. Generates
BINARY in schema. This does not affect the type of data stored,
only the collation of character data.
"""
super(VARCHAR, self).__init__(length=length, **kwargs)
def expandvars(path):
"""
Args:
path (pathlike): A path to expand
Returns:
`fsnative`
Like :func:`python:os.path.expandvars` but supports unicode under Windows
+ Python 2 and always returns a `fsnative`.
"""
path = path2fsn(path)
def repl_func(match):
return environ.get(match.group(1), match.group(0))
path = re.compile(r"\$(\w+)", flags=re.UNICODE).sub(repl_func, path)
if os.name == "nt":
path = re.sub(r"%([^%]+)%", repl_func, path)
return re.sub(r"\$\{([^\}]+)\}", repl_func, path)
def safe_filename(text, max_length=200):
"""Sanitizes filenames for many operating systems.
:params text: The unsanitized pending filename.
"""
# Tidy up ugly formatted filenames.
text = text.replace('_', ' ')
text = text.replace(':', ' -')
# NTFS forbids filenames containing characters in range 0-31 (0x00-0x1F)
ntfs = [chr(i) for i in range(0, 31)]
# Removing these SHOULD make most filename safe for a wide range of
# operating systems.
paranoid = ['\"', '\#', '\$', '\%', '\'', '\*', '\,', '\.', '\/', '\:',
'\;', '\<', '\>', '\?', '\\', '\^', '\|', '\~', '\\\\']
blacklist = re.compile('|'.join(ntfs + paranoid), re.UNICODE)
filename = blacklist.sub('', text)
return truncate(filename)
def str_flags_to_int(str_flags):
flags = 0
if "i" in str_flags:
flags |= re.IGNORECASE
if "l" in str_flags:
flags |= re.LOCALE
if "m" in str_flags:
flags |= re.MULTILINE
if "s" in str_flags:
flags |= re.DOTALL
if "u" in str_flags:
flags |= re.UNICODE
if "x" in str_flags:
flags |= re.VERBOSE
return flags
def str_flags_to_int(str_flags):
flags = 0
if "i" in str_flags:
flags |= re.IGNORECASE
if "l" in str_flags:
flags |= re.LOCALE
if "m" in str_flags:
flags |= re.MULTILINE
if "s" in str_flags:
flags |= re.DOTALL
if "u" in str_flags:
flags |= re.UNICODE
if "x" in str_flags:
flags |= re.VERBOSE
return flags
def str_flags_to_int(str_flags):
flags = 0
if "i" in str_flags:
flags |= re.IGNORECASE
if "l" in str_flags:
flags |= re.LOCALE
if "m" in str_flags:
flags |= re.MULTILINE
if "s" in str_flags:
flags |= re.DOTALL
if "u" in str_flags:
flags |= re.UNICODE
if "x" in str_flags:
flags |= re.VERBOSE
return flags
def str_flags_to_int(str_flags):
flags = 0
if "i" in str_flags:
flags |= re.IGNORECASE
if "l" in str_flags:
flags |= re.LOCALE
if "m" in str_flags:
flags |= re.MULTILINE
if "s" in str_flags:
flags |= re.DOTALL
if "u" in str_flags:
flags |= re.UNICODE
if "x" in str_flags:
flags |= re.VERBOSE
return flags
def __init__(self, pattern, markdown_instance=None):
"""
Create an instant of an inline pattern.
Keyword arguments:
* pattern: A regular expression that matches a pattern
"""
self.pattern = pattern
self.compiled_re = re.compile("^(.*?)%s(.*)$" % pattern,
re.DOTALL | re.UNICODE)
# Api for Markdown to pass safe_mode into instance
self.safe_mode = False
if markdown_instance:
self.markdown = markdown_instance
def regex(self):
"""
Returns a compiled regular expression, depending upon the activated
language-code.
"""
language_code = get_language()
if language_code not in self._regex_dict:
if isinstance(self._regex, six.string_types):
regex = self._regex
else:
regex = force_text(self._regex)
try:
compiled_regex = re.compile(regex, re.UNICODE)
except re.error as e:
raise ImproperlyConfigured(
'"%s" is not a valid regular expression: %s' %
(regex, six.text_type(e)))
self._regex_dict[language_code] = compiled_regex
return self._regex_dict[language_code]
def _do_match(self, text):
if self.use_regex:
try:
flags = re.UNICODE
if not self.case_sensitive:
flags |= re.IGNORECASE
return bool(re.findall(self.pattern, text, flags=flags))
except Exception as ex:
logger.warning('Regular expression match failed', exc_info=True)
raise self.BadPatternException(str(ex))
else:
if self.case_sensitive:
pattern = self.pattern
else:
pattern = self.pattern.lower()
text = text.lower()
return pattern in text
def obtainGroups(webcontent, groupNum):
synonym_list = []
for group in range(groupNum):
while not re.search("synonyms-list-group", webcontent.readline(), re.UNICODE):
continue
meaning = re.search("Meaning: <b>([^<]+)</b>", webcontent.readline(), re.UNICODE).group(1)
webcontent.readline() # </div> line
webcontent.readline() # synonyms-list_content line
sublist = webcontent.readline().split(',')
subSynList = []
for wordContainer in sublist:
potential_synonym = re.search("<a href=[^>]+>([^<]+)</a>", wordContainer, re.UNICODE)
if potential_synonym:
subSynList.append(potential_synonym.group(1))
synonym_list.append([meaning, subSynList])
return synonym_list
def _parser(webcontent):
end_tag_count=4
pointer = webcontent.tell()
end = len(webcontent.getvalue())
while pointer<end:
line_curr = webcontent.readline()
found = re.search("Found ([0-9]+) synonym[ a-z]+([0-9]+) group", line_curr, re.UNICODE)
notFound = re.search("<div class=\"no-results\">", line_curr, re.UNICODE)
if found:
groupNum = int(found.group(2))
synonymNum = int(found.group(1))
synonym_list = obtainGroups(webcontent, groupNum)
webcontent.close()
return synonym_list
if notFound:
webcontent.close()
return []
webcontent.close()
return synonym_list
def __init__(self, **kwargs):
"""Construct a TINYTEXT.
:param charset: Optional, a column-level character set for this string
value. Takes precedence to 'ascii' or 'unicode' short-hand.
:param collation: Optional, a column-level collation for this string
value. Takes precedence to 'binary' short-hand.
:param ascii: Defaults to False: short-hand for the ``latin1``
character set, generates ASCII in schema.
:param unicode: Defaults to False: short-hand for the ``ucs2``
character set, generates UNICODE in schema.
:param national: Optional. If true, use the server's configured
national character set.
:param binary: Defaults to False: short-hand, pick the binary
collation type that matches the column's character set. Generates
BINARY in schema. This does not affect the type of data stored,
only the collation of character data.
"""
super(TINYTEXT, self).__init__(**kwargs)
def __init__(self, **kwargs):
"""Construct a MEDIUMTEXT.
:param charset: Optional, a column-level character set for this string
value. Takes precedence to 'ascii' or 'unicode' short-hand.
:param collation: Optional, a column-level collation for this string
value. Takes precedence to 'binary' short-hand.
:param ascii: Defaults to False: short-hand for the ``latin1``
character set, generates ASCII in schema.
:param unicode: Defaults to False: short-hand for the ``ucs2``
character set, generates UNICODE in schema.
:param national: Optional. If true, use the server's configured
national character set.
:param binary: Defaults to False: short-hand, pick the binary
collation type that matches the column's character set. Generates
BINARY in schema. This does not affect the type of data stored,
only the collation of character data.
"""
super(MEDIUMTEXT, self).__init__(**kwargs)
def __init__(self, **kwargs):
"""Construct a LONGTEXT.
:param charset: Optional, a column-level character set for this string
value. Takes precedence to 'ascii' or 'unicode' short-hand.
:param collation: Optional, a column-level collation for this string
value. Takes precedence to 'binary' short-hand.
:param ascii: Defaults to False: short-hand for the ``latin1``
character set, generates ASCII in schema.
:param unicode: Defaults to False: short-hand for the ``ucs2``
character set, generates UNICODE in schema.
:param national: Optional. If true, use the server's configured
national character set.
:param binary: Defaults to False: short-hand, pick the binary
collation type that matches the column's character set. Generates
BINARY in schema. This does not affect the type of data stored,
only the collation of character data.
"""
super(LONGTEXT, self).__init__(**kwargs)
def __init__(self, length=None, **kwargs):
"""Construct a VARCHAR.
:param charset: Optional, a column-level character set for this string
value. Takes precedence to 'ascii' or 'unicode' short-hand.
:param collation: Optional, a column-level collation for this string
value. Takes precedence to 'binary' short-hand.
:param ascii: Defaults to False: short-hand for the ``latin1``
character set, generates ASCII in schema.
:param unicode: Defaults to False: short-hand for the ``ucs2``
character set, generates UNICODE in schema.
:param national: Optional. If true, use the server's configured
national character set.
:param binary: Defaults to False: short-hand, pick the binary
collation type that matches the column's character set. Generates
BINARY in schema. This does not affect the type of data stored,
only the collation of character data.
"""
super(VARCHAR, self).__init__(length=length, **kwargs)
def _fun_into(x):
if ct.PY3:
reg1 = re.compile(r'??(.*?)?', re.UNICODE)
reg2 = re.compile(r'??(.*?)?', re.UNICODE)
res1 = reg1.findall(x)
res2 = reg2.findall(x)
res1 = 0 if len(res1)<1 else float(res1[0])
res2 = 0 if len(res2)<1 else float(res2[0])
return res1 + res2
else:
if isinstance(x, unicode):
s1 = unicode('??','utf-8')
s2 = unicode('??','utf-8')
s3 = unicode('?','utf-8')
reg1 = re.compile(r'%s(.*?)%s'%(s1, s3), re.UNICODE)
reg2 = re.compile(r'%s(.*?)%s'%(s2, s3), re.UNICODE)
res1 = reg1.findall(x)
res2 = reg2.findall(x)
res1 = 0 if len(res1)<1 else float(res1[0])
res2 = 0 if len(res2)<1 else float(res2[0])
return res1 + res2
else:
return 0
def __init__(self, expression, error_message='Invalid expression',
strict=False, search=False, extract=False,
is_unicode=False):
if strict or not search:
if not expression.startswith('^'):
expression = '^(%s)' % expression
if strict:
if not expression.endswith('$'):
expression = '(%s)$' % expression
if is_unicode:
if not isinstance(expression, unicodeT):
expression = expression.decode('utf8')
self.regex = re.compile(expression, re.UNICODE)
else:
self.regex = re.compile(expression)
self.error_message = error_message
self.extract = extract
self.is_unicode = is_unicode or (not(PY2))
def transpyler_lexer_factory(transpyler):
"""
Return a Pygments lexer class for the given transpyler.
"""
def analyse_text(text):
return shebang_matches(text, r'pythonw?3(\.\d)?')
return type(
transpyler.pygments_class_name,
(Python3Lexer,),
dict(
analyse_text=analyse_text,
name=transpyler.name,
aliases=[transpyler.display_name],
filenames=transpyler.file_extensions,
mimetypes=transpyler.mimetypes,
flags=re.MULTILINE | re.UNICODE,
uni_name="[%s][%s]*" % (uni.xid_start, uni.xid_continue),
tokens=make_transpyled_tokens(transpyler),
)
)
def build_regexp(definition, compile=True):
"""
Build, compile and return a regular expression based on `definition`.
:Parameter: `definition`: a 4-tuple (group name, prefix, suffix, parts),
where "parts" is a list of regular expressions and/or regular
expression definitions to be joined into an or-group.
"""
name, prefix, suffix, parts = definition
part_strings = []
for part in parts:
if type(part) is tuple:
part_strings.append(build_regexp(part, None))
else:
part_strings.append(part)
or_group = '|'.join(part_strings)
regexp = '%(prefix)s(?P<%(name)s>%(or_group)s)%(suffix)s' % locals()
if compile:
return re.compile(regexp, re.UNICODE)
else:
return regexp
def test_pass_precompiled_regex(self):
"""
You can alternatively provide a precompiled regex to the Filter
instead of a string pattern.
"""
# Compile our own pattern so that we can specify the
# ``IGNORECASE`` flag.
# Note that you are responsible for adding the ``UNICODE`` flag
# to your compiled regex!
# noinspection SpellCheckingInspection
pattern = re.compile(r'\btest\b', re.IGNORECASE | re.UNICODE)
self.assertFilterPasses(
self._filter('test march of the TEST penguins', pattern=pattern),
['test', 'TEST'],
)
def test_pass_regex_library_support(self):
"""
The Regex Filter also supports precompiled patterns using the
``regex`` library.
"""
# Roughly, "Hi there!" in Burmese.
word = '\u101f\u102d\u102f\u1004\u103a\u1038'
# Note that :py:func:`regex.compile` automatically adds the
# ``UNICODE`` flag for you when the pattern is a unicode.
pattern = regex.compile(r'\w+')
self.assertFilterPasses(
self._filter(word, pattern=pattern),
[word],
)
def test_pass_precompiled_regex(self):
"""
You can alternatively provide a precompiled regex to the Filter
instead of a string pattern.
"""
# Compile our own pattern so that we can specify the
# ``IGNORECASE`` flag.
# Note that you are responsible for adding the ``UNICODE`` flag
# to your compiled regex!
# noinspection SpellCheckingInspection
pattern = re.compile(r'\btest\b', re.IGNORECASE | re.UNICODE)
self.assertFilterPasses(
self._filter('test march of the TEST penguins', pattern=pattern),
['', ' march of the ', ' penguins'],
)
def test_pass_regex_library_support(self):
"""
The Regex Filter also supports precompiled patterns using the
``regex`` library.
"""
# Roughly, "Hi there!" in Burmese.
word = '\u101f\u102d\u102f\u1004\u103a\u1038!'
# Note that :py:func:`regex.compile` automatically adds the
# ``UNICODE`` flag for you when the pattern is a unicode.
pattern = regex.compile(r'\w+')
self.assertFilterPasses(
self._filter(word, pattern=pattern),
['', '!'],
)
def build_regexp(definition, compile=True):
"""
Build, compile and return a regular expression based on `definition`.
:Parameter: `definition`: a 4-tuple (group name, prefix, suffix, parts),
where "parts" is a list of regular expressions and/or regular
expression definitions to be joined into an or-group.
"""
name, prefix, suffix, parts = definition
part_strings = []
for part in parts:
if type(part) is tuple:
part_strings.append(build_regexp(part, None))
else:
part_strings.append(part)
or_group = '|'.join(part_strings)
regexp = '%(prefix)s(?P<%(name)s>%(or_group)s)%(suffix)s' % locals()
if compile:
return re.compile(regexp, re.UNICODE)
else:
return regexp
def __init__(self, **kwargs):
"""Construct a TINYTEXT.
:param charset: Optional, a column-level character set for this string
value. Takes precedence to 'ascii' or 'unicode' short-hand.
:param collation: Optional, a column-level collation for this string
value. Takes precedence to 'binary' short-hand.
:param ascii: Defaults to False: short-hand for the ``latin1``
character set, generates ASCII in schema.
:param unicode: Defaults to False: short-hand for the ``ucs2``
character set, generates UNICODE in schema.
:param national: Optional. If true, use the server's configured
national character set.
:param binary: Defaults to False: short-hand, pick the binary
collation type that matches the column's character set. Generates
BINARY in schema. This does not affect the type of data stored,
only the collation of character data.
"""
super(TINYTEXT, self).__init__(**kwargs)
def __init__(self, **kwargs):
"""Construct a MEDIUMTEXT.
:param charset: Optional, a column-level character set for this string
value. Takes precedence to 'ascii' or 'unicode' short-hand.
:param collation: Optional, a column-level collation for this string
value. Takes precedence to 'binary' short-hand.
:param ascii: Defaults to False: short-hand for the ``latin1``
character set, generates ASCII in schema.
:param unicode: Defaults to False: short-hand for the ``ucs2``
character set, generates UNICODE in schema.
:param national: Optional. If true, use the server's configured
national character set.
:param binary: Defaults to False: short-hand, pick the binary
collation type that matches the column's character set. Generates
BINARY in schema. This does not affect the type of data stored,
only the collation of character data.
"""
super(MEDIUMTEXT, self).__init__(**kwargs)
def __init__(self, **kwargs):
"""Construct a LONGTEXT.
:param charset: Optional, a column-level character set for this string
value. Takes precedence to 'ascii' or 'unicode' short-hand.
:param collation: Optional, a column-level collation for this string
value. Takes precedence to 'binary' short-hand.
:param ascii: Defaults to False: short-hand for the ``latin1``
character set, generates ASCII in schema.
:param unicode: Defaults to False: short-hand for the ``ucs2``
character set, generates UNICODE in schema.
:param national: Optional. If true, use the server's configured
national character set.
:param binary: Defaults to False: short-hand, pick the binary
collation type that matches the column's character set. Generates
BINARY in schema. This does not affect the type of data stored,
only the collation of character data.
"""
super(LONGTEXT, self).__init__(**kwargs)
def __init__(self, length=None, **kwargs):
"""Construct a VARCHAR.
:param charset: Optional, a column-level character set for this string
value. Takes precedence to 'ascii' or 'unicode' short-hand.
:param collation: Optional, a column-level collation for this string
value. Takes precedence to 'binary' short-hand.
:param ascii: Defaults to False: short-hand for the ``latin1``
character set, generates ASCII in schema.
:param unicode: Defaults to False: short-hand for the ``ucs2``
character set, generates UNICODE in schema.
:param national: Optional. If true, use the server's configured
national character set.
:param binary: Defaults to False: short-hand, pick the binary
collation type that matches the column's character set. Generates
BINARY in schema. This does not affect the type of data stored,
only the collation of character data.
"""
super(VARCHAR, self).__init__(length=length, **kwargs)
def __init__(self, pattern, markdown_instance=None):
"""
Create an instant of an inline pattern.
Keyword arguments:
* pattern: A regular expression that matches a pattern
"""
self.pattern = pattern
self.compiled_re = re.compile("^(.*?)%s(.*)$" % pattern,
re.DOTALL | re.UNICODE)
# Api for Markdown to pass safe_mode into instance
self.safe_mode = False
if markdown_instance:
self.markdown = markdown_instance
def __init__(self, expression, error_message='Invalid expression',
strict=False, search=False, extract=False,
is_unicode=False):
if strict or not search:
if not expression.startswith('^'):
expression = '^(%s)' % expression
if strict:
if not expression.endswith('$'):
expression = '(%s)$' % expression
if is_unicode:
if not isinstance(expression, unicode):
expression = expression.decode('utf8')
self.regex = re.compile(expression, re.UNICODE)
else:
self.regex = re.compile(expression)
self.error_message = error_message
self.extract = extract
self.is_unicode = is_unicode
def __init__(self, **kwargs):
"""Construct a TINYTEXT.
:param charset: Optional, a column-level character set for this string
value. Takes precedence to 'ascii' or 'unicode' short-hand.
:param collation: Optional, a column-level collation for this string
value. Takes precedence to 'binary' short-hand.
:param ascii: Defaults to False: short-hand for the ``latin1``
character set, generates ASCII in schema.
:param unicode: Defaults to False: short-hand for the ``ucs2``
character set, generates UNICODE in schema.
:param national: Optional. If true, use the server's configured
national character set.
:param binary: Defaults to False: short-hand, pick the binary
collation type that matches the column's character set. Generates
BINARY in schema. This does not affect the type of data stored,
only the collation of character data.
"""
super(TINYTEXT, self).__init__(**kwargs)
def __init__(self, **kwargs):
"""Construct a MEDIUMTEXT.
:param charset: Optional, a column-level character set for this string
value. Takes precedence to 'ascii' or 'unicode' short-hand.
:param collation: Optional, a column-level collation for this string
value. Takes precedence to 'binary' short-hand.
:param ascii: Defaults to False: short-hand for the ``latin1``
character set, generates ASCII in schema.
:param unicode: Defaults to False: short-hand for the ``ucs2``
character set, generates UNICODE in schema.
:param national: Optional. If true, use the server's configured
national character set.
:param binary: Defaults to False: short-hand, pick the binary
collation type that matches the column's character set. Generates
BINARY in schema. This does not affect the type of data stored,
only the collation of character data.
"""
super(MEDIUMTEXT, self).__init__(**kwargs)
def __init__(self, **kwargs):
"""Construct a LONGTEXT.
:param charset: Optional, a column-level character set for this string
value. Takes precedence to 'ascii' or 'unicode' short-hand.
:param collation: Optional, a column-level collation for this string
value. Takes precedence to 'binary' short-hand.
:param ascii: Defaults to False: short-hand for the ``latin1``
character set, generates ASCII in schema.
:param unicode: Defaults to False: short-hand for the ``ucs2``
character set, generates UNICODE in schema.
:param national: Optional. If true, use the server's configured
national character set.
:param binary: Defaults to False: short-hand, pick the binary
collation type that matches the column's character set. Generates
BINARY in schema. This does not affect the type of data stored,
only the collation of character data.
"""
super(LONGTEXT, self).__init__(**kwargs)
def __init__(self, length=None, **kwargs):
"""Construct a VARCHAR.
:param charset: Optional, a column-level character set for this string
value. Takes precedence to 'ascii' or 'unicode' short-hand.
:param collation: Optional, a column-level collation for this string
value. Takes precedence to 'binary' short-hand.
:param ascii: Defaults to False: short-hand for the ``latin1``
character set, generates ASCII in schema.
:param unicode: Defaults to False: short-hand for the ``ucs2``
character set, generates UNICODE in schema.
:param national: Optional. If true, use the server's configured
national character set.
:param binary: Defaults to False: short-hand, pick the binary
collation type that matches the column's character set. Generates
BINARY in schema. This does not affect the type of data stored,
only the collation of character data.
"""
super(VARCHAR, self).__init__(length=length, **kwargs)
def valid_name(name):
r"""Determine whether or not the given string is a valid
alphanumeric string.
Parameters
----------
name : str
An alphanumeric identifier.
Returns
-------
result : bool
``True`` if the name is valid, else ``False``.
Examples
--------
>>> valid_name('alpha') # True
>>> valid_name('!alpha') # False
"""
identifier = re.compile(r"^[^\d\W]\w*\Z", re.UNICODE)
result = re.match(identifier, name)
return result is not None
def __init__(self, expression, error_message='invalid expression',
strict=False, search=False, extract=False,
unicode=False):
if strict or not search:
if not expression.startswith('^'):
expression = '^(%s)' % expression
if strict:
if not expression.endswith('$'):
expression = '(%s)$' % expression
if unicode:
if not isinstance(expression,unicode):
expression = expression.decode('utf8')
self.regex = re.compile(expression,re.UNICODE)
else:
self.regex = re.compile(expression)
self.error_message = error_message
self.extract = extract
self.unicode = unicode
def parse_pocket_export(html_file):
"""Parse Pocket-format bookmarks export files (produced by getpocket.com/export/)"""
html_file.seek(0)
pattern = re.compile("^\\s*<li><a href=\"(.+)\" time_added=\"(\\d+)\" tags=\"(.*)\">(.+)</a></li>", re.UNICODE)
for line in html_file:
# example line
# <li><a href="http://example.com/ time_added="1478739709" tags="tag1,tag2">example title</a></li>
match = pattern.search(line)
if match:
fixed_url = match.group(1).replace('http://www.readability.com/read?url=', '') # remove old readability prefixes to get original url
time = datetime.fromtimestamp(float(match.group(2)))
info = {
'url': fixed_url,
'domain': domain(fixed_url),
'base_url': base_url(fixed_url),
'timestamp': str(time.timestamp()),
'tags': match.group(3),
'title': match.group(4).replace(' — Readability', '').replace('http://www.readability.com/read?url=', '') or base_url(fixed_url),
'sources': [html_file.name],
}
info['type'] = get_link_type(info)
yield info
def _apply_search_backrefs(pattern, flags=0):
"""Apply the search backrefs to the search pattern."""
if isinstance(pattern, (compat.string_type, compat.binary_type)):
re_verbose = bool(VERBOSE & flags)
re_unicode = None
if compat.PY3 and bool(ASCII & flags):
re_unicode = False
elif bool(UNICODE & flags):
re_unicode = True
pattern = SearchTemplate(pattern, re_verbose, re_unicode).apply()
elif isinstance(pattern, RE_TYPE):
if flags:
raise ValueError("Cannot process flags argument with a compiled pattern!")
else:
raise TypeError("Not a string or compiled pattern!")
return pattern
def _compile(expr):
return re.compile(expr, re.UNICODE)
# Note that since _all_string_prefixes includes the empty string,
# StringPrefix can be the empty string (making it optional).
def __init__(self):
#load affix information
# pass
self.prefix_letters = stem_const.DEFAULT_PREFIX_LETTERS
self.suffix_letters = stem_const.DEFAULT_SUFFIX_LETTERS
self.infix_letters = stem_const.DEFAULT_INFIX_LETTERS
self.max_prefix_length = stem_const.DEFAULT_MAX_PREFIX
self.max_suffix_length = stem_const.DEFAULT_MAX_SUFFIX
self.min_stem_length = stem_const.DEFAULT_MIN_STEM
self.joker = stem_const.DEFAULT_JOKER
self.prefix_list = stem_const.DEFAULT_PREFIX_LIST
self.suffix_list = stem_const.DEFAULT_SUFFIX_LIST
self.word = u""
self.unvocalized = u""
self.normalized = u""
self.starword = u""
self.root = u""
self.left = 0
self.right = 0
self.segment_list = []
#token pattern
# letters and harakat
self.token_pat = re.compile(r"[^\w\u064b-\u0652']+", re.UNICODE)
self.prefixes_tree = self._create_prefix_tree(self.prefix_list)
self.suffixes_tree = self._create_suffix_tree(self.suffix_list)
######################################################################
#{ Attribut Functions
######################################################################
def compile(self, rules):
mapping = {}
patterns = []
for rule in rules:
name = 'rule_{id}'.format(id=id(rule))
pattern = r'(?P<{name}>{pattern})'.format(
name=name,
pattern=rule.pattern
)
mapping[name] = rule
patterns.append(pattern)
pattern = '|'.join(patterns)
regexp = re.compile(pattern, re.UNICODE | re.IGNORECASE)
return regexp, mapping
def from_native(cls, regex):
"""Convert a Python regular expression into a ``Regex`` instance.
Note that in Python 3, a regular expression compiled from a
:class:`str` has the ``re.UNICODE`` flag set. If it is undesirable
to store this flag in a BSON regular expression, unset it first::
>>> pattern = re.compile('.*')
>>> regex = Regex.from_native(pattern)
>>> regex.flags ^= re.UNICODE
>>> db.collection.insert({'pattern': regex})
:Parameters:
- `regex`: A regular expression object from ``re.compile()``.
.. warning::
Python regular expressions use a different syntax and different
set of flags than MongoDB, which uses `PCRE`_. A regular
expression retrieved from the server may not compile in
Python, or may match a different set of strings in Python than
when used in a MongoDB query.
.. _PCRE: http://www.pcre.org/
"""
if not isinstance(regex, RE_TYPE):
raise TypeError(
"regex must be a compiled regular expression, not %s"
% type(regex))
return Regex(regex.pattern, regex.flags)
def __init__(self, length=None, **kw):
"""Construct a TEXT.
:param length: Optional, if provided the server may optimize storage
by substituting the smallest TEXT type sufficient to store
``length`` characters.
:param charset: Optional, a column-level character set for this string
value. Takes precedence to 'ascii' or 'unicode' short-hand.
:param collation: Optional, a column-level collation for this string
value. Takes precedence to 'binary' short-hand.
:param ascii: Defaults to False: short-hand for the ``latin1``
character set, generates ASCII in schema.
:param unicode: Defaults to False: short-hand for the ``ucs2``
character set, generates UNICODE in schema.
:param national: Optional. If true, use the server's configured
national character set.
:param binary: Defaults to False: short-hand, pick the binary
collation type that matches the column's character set. Generates
BINARY in schema. This does not affect the type of data stored,
only the collation of character data.
"""
super(TEXT, self).__init__(length=length, **kw)