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[经验分享] Python源码:str对象

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发表于 2018-8-12 11:14:53 | 显示全部楼层 |阅读模式
class str(object):  
    """
  
    str(object='') -> str
  
    str(bytes_or_buffer[, encoding[, errors]]) -> str
  

  
    Create a new string object from the given object. If encoding or
  
    errors is specified, then the object must expose a data buffer
  
    that will be decoded using the given encoding and error handler.
  
    Otherwise, returns the result of object.__str__() (if defined)
  
    or repr(object).
  
    encoding defaults to sys.getdefaultencoding().
  
    errors defaults to 'strict'.
  
    """
  
    def capitalize(self): # real signature unknown; restored from __doc__
  
        """
  
        S.capitalize() -> str
  

  
        Return a capitalized version of S, i.e. make the first character
  
        have upper case and the rest lower case.
  
        """
  
        return ""
  

  
    def casefold(self): # real signature unknown; restored from __doc__
  
        """
  
        S.casefold() -> str
  

  
        Return a version of S suitable for caseless comparisons.
  
        """
  
        return ""
  

  
    def center(self, width, fillchar=None): # real signature unknown; restored from __doc__
  
        """
  
        S.center(width[, fillchar]) -> str
  

  
        Return S centered in a string of length width. Padding is
  
        done using the specified fill character (default is a space)
  
        """
  
        return ""
  

  
    def count(self, sub, start=None, end=None): # real signature unknown; restored from __doc__
  
        """
  
        S.count(sub[, start[, end]]) -> int
  

  
        Return the number of non-overlapping occurrences of substring sub in
  
        string S[start:end].  Optional arguments start and end are
  
        interpreted as in slice notation.
  
        """
  
        return 0
  

  
    def encode(self, encoding='utf-8', errors='strict'): # real signature unknown; restored from __doc__
  
        """
  
        S.encode(encoding='utf-8', errors='strict') -> bytes
  

  
        Encode S using the codec registered for encoding. Default encoding
  
        is 'utf-8'. errors may be given to set a different error
  
        handling scheme. Default is 'strict' meaning that encoding errors raise
  
        a UnicodeEncodeError. Other possible values are 'ignore', 'replace' and
  
        'xmlcharrefreplace' as well as any other name registered with
  
        codecs.register_error that can handle UnicodeEncodeErrors.
  
        """
  
        return b""
  

  
    def endswith(self, suffix, start=None, end=None): # real signature unknown; restored from __doc__
  
        """
  
        S.endswith(suffix[, start[, end]]) -> bool
  

  
        Return True if S ends with the specified suffix, False otherwise.
  
        With optional start, test S beginning at that position.
  
        With optional end, stop comparing S at that position.
  
        suffix can also be a tuple of strings to try.
  
        """
  
        return False
  

  
    def expandtabs(self, tabsize=8): # real signature unknown; restored from __doc__
  
        """
  
        S.expandtabs(tabsize=8) -> str
  

  
        Return a copy of S where all tab characters are expanded using spaces.
  
        If tabsize is not given, a tab size of 8 characters is assumed.
  
        """
  
        return ""
  

  
    def find(self, sub, start=None, end=None): # real signature unknown; restored from __doc__
  
        """
  
        S.find(sub[, start[, end]]) -> int
  

  
        Return the lowest index in S where substring sub is found,
  
        such that sub is contained within S[start:end].  Optional
  
        arguments start and end are interpreted as in slice notation.
  

  
        Return -1 on failure.
  
        """
  
        return 0
  

  
    def format(self, *args, **kwargs): # known special case of str.format
  
        """
  
        S.format(*args, **kwargs) -> str
  

  
        Return a formatted version of S, using substitutions from args and kwargs.
  
        The substitutions are identified by braces ('{' and '}').
  
        """
  
        pass
  

  
    def format_map(self, mapping): # real signature unknown; restored from __doc__
  
        """
  
        S.format_map(mapping) -> str
  

  
        Return a formatted version of S, using substitutions from mapping.
  
        The substitutions are identified by braces ('{' and '}').
  
        """
  
        return ""
  

  
    def index(self, sub, start=None, end=None): # real signature unknown; restored from __doc__
  
        """
  
        S.index(sub[, start[, end]]) -> int
  

  
        Like S.find() but raise ValueError when the substring is not found.
  
        """
  
        return 0
  

  
    def isalnum(self): # real signature unknown; restored from __doc__
  
        """
  
        S.isalnum() -> bool
  

  
        Return True if all characters in S are alphanumeric
  
        and there is at least one character in S, False otherwise.
  
        """
  
        return False
  

  
    def isalpha(self): # real signature unknown; restored from __doc__
  
        """
  
        S.isalpha() -> bool
  

  
        Return True if all characters in S are alphabetic
  
        and there is at least one character in S, False otherwise.
  
        """
  
        return False
  

  
    def isdecimal(self): # real signature unknown; restored from __doc__
  
        """
  
        S.isdecimal() -> bool
  

  
        Return True if there are only decimal characters in S,
  
        False otherwise.
  
        """
  
        return False
  

  
    def isdigit(self): # real signature unknown; restored from __doc__
  
        """
  
        S.isdigit() -> bool
  

  
        Return True if all characters in S are digits
  
        and there is at least one character in S, False otherwise.
  
        """
  
        return False
  

  
    def isidentifier(self): # real signature unknown; restored from __doc__
  
        """
  
        S.isidentifier() -> bool
  

  
        Return True if S is a valid identifier according
  
        to the language definition.
  

  
        Use keyword.iskeyword() to test for reserved identifiers
  
        such as "def" and "class".
  
        """
  
        return False
  

  
    def islower(self): # real signature unknown; restored from __doc__
  
        """
  
        S.islower() -> bool
  

  
        Return True if all cased characters in S are lowercase and there is
  
        at least one cased character in S, False otherwise.
  
        """
  
        return False
  

  
    def isnumeric(self): # real signature unknown; restored from __doc__
  
        """
  
        S.isnumeric() -> bool
  

  
        Return True if there are only numeric characters in S,
  
        False otherwise.
  
        """
  
        return False
  

  
    def isprintable(self): # real signature unknown; restored from __doc__
  
        """
  
        S.isprintable() -> bool
  

  
        Return True if all characters in S are considered
  
        printable in repr() or S is empty, False otherwise.
  
        """
  
        return False
  

  
    def isspace(self): # real signature unknown; restored from __doc__
  
        """
  
        S.isspace() -> bool
  

  
        Return True if all characters in S are whitespace
  
        and there is at least one character in S, False otherwise.
  
        """
  
        return False
  

  
    def istitle(self): # real signature unknown; restored from __doc__
  
        """
  
        S.istitle() -> bool
  

  
        Return True if S is a titlecased string and there is at least one
  
        character in S, i.e. upper- and titlecase characters may only
  
        follow uncased characters and lowercase characters only cased ones.
  
        Return False otherwise.
  
        """
  
        return False
  

  
    def isupper(self): # real signature unknown; restored from __doc__
  
        """
  
        S.isupper() -> bool
  

  
        Return True if all cased characters in S are uppercase and there is
  
        at least one cased character in S, False otherwise.
  
        """
  
        return False
  

  
    def join(self, iterable): # real signature unknown; restored from __doc__
  
        """
  
        S.join(iterable) -> str
  

  
        Return a string which is the concatenation of the strings in the
  
        iterable.  The separator between elements is S.
  
        """
  
        return ""
  

  
    def ljust(self, width, fillchar=None): # real signature unknown; restored from __doc__
  
        """
  
        S.ljust(width[, fillchar]) -> str
  

  
        Return S left-justified in a Unicode string of length width. Padding is
  
        done using the specified fill character (default is a space).
  
        """
  
        return ""
  

  
    def lower(self): # real signature unknown; restored from __doc__
  
        """
  
        S.lower() -> str
  

  
        Return a copy of the string S converted to lowercase.
  
        """
  
        return ""
  

  
    def lstrip(self, chars=None): # real signature unknown; restored from __doc__
  
        """
  
        S.lstrip([chars]) -> str
  

  
        Return a copy of the string S with leading whitespace removed.
  
        If chars is given and not None, remove characters in chars instead.
  
        """
  
        return ""
  

  
    def maketrans(self, *args, **kwargs): # real signature unknown
  
        """
  
        Return a translation table usable for str.translate().
  

  
        If there is only one argument, it must be a dictionary mapping Unicode
  
        ordinals (integers) or characters to Unicode ordinals, strings or None.
  
        Character keys will be then converted to ordinals.
  
        If there are two arguments, they must be strings of equal length, and
  
        in the resulting dictionary, each character in x will be mapped to the
  
        character at the same position in y. If there is a third argument, it
  
        must be a string, whose characters will be mapped to None in the result.
  
        """
  
        pass
  

  
    def partition(self, sep): # real signature unknown; restored from __doc__
  
        """
  
        S.partition(sep) -> (head, sep, tail)
  

  
        Search for the separator sep in S, and return the part before it,
  
        the separator itself, and the part after it.  If the separator is not
  
        found, return S and two empty strings.
  
        """
  
        pass
  

  
    def replace(self, old, new, count=None): # real signature unknown; restored from __doc__
  
        """
  
        S.replace(old, new[, count]) -> str
  

  
        Return a copy of S with all occurrences of substring
  
        old replaced by new.  If the optional argument count is
  
        given, only the first count occurrences are replaced.
  
        """
  
        return ""
  

  
    def rfind(self, sub, start=None, end=None): # real signature unknown; restored from __doc__
  
        """
  
        S.rfind(sub[, start[, end]]) -> int
  

  
        Return the highest index in S where substring sub is found,
  
        such that sub is contained within S[start:end].  Optional
  
        arguments start and end are interpreted as in slice notation.
  

  
        Return -1 on failure.
  
        """
  
        return 0
  

  
    def rindex(self, sub, start=None, end=None): # real signature unknown; restored from __doc__
  
        """
  
        S.rindex(sub[, start[, end]]) -> int
  

  
        Like S.rfind() but raise ValueError when the substring is not found.
  
        """
  
        return 0
  

  
    def rjust(self, width, fillchar=None): # real signature unknown; restored from __doc__
  
        """
  
        S.rjust(width[, fillchar]) -> str
  

  
        Return S right-justified in a string of length width. Padding is
  
        done using the specified fill character (default is a space).
  
        """
  
        return ""
  

  
    def rpartition(self, sep): # real signature unknown; restored from __doc__
  
        """
  
        S.rpartition(sep) -> (head, sep, tail)
  

  
        Search for the separator sep in S, starting at the end of S, and return
  
        the part before it, the separator itself, and the part after it.  If the
  
        separator is not found, return two empty strings and S.
  
        """
  
        pass
  

  
    def rsplit(self, sep=None, maxsplit=-1): # real signature unknown; restored from __doc__
  
        """
  
        S.rsplit(sep=None, maxsplit=-1) -> list of strings
  

  
        Return a list of the words in S, using sep as the
  
        delimiter string, starting at the end of the string and
  
        working to the front.  If maxsplit is given, at most maxsplit
  
        splits are done. If sep is not specified, any whitespace string
  
        is a separator.
  
        """
  
        return []
  

  
    def rstrip(self, chars=None): # real signature unknown; restored from __doc__
  
        """
  
        S.rstrip([chars]) -> str
  

  
        Return a copy of the string S with trailing whitespace removed.
  
        If chars is given and not None, remove characters in chars instead.
  
        """
  
        return ""
  

  
    def split(self, sep=None, maxsplit=-1): # real signature unknown; restored from __doc__
  
        """
  
        S.split(sep=None, maxsplit=-1) -> list of strings
  

  
        Return a list of the words in S, using sep as the
  
        delimiter string.  If maxsplit is given, at most maxsplit
  
        splits are done. If sep is not specified or is None, any
  
        whitespace string is a separator and empty strings are
  
        removed from the result.
  
        """
  
        return []
  

  
    def splitlines(self, keepends=None): # real signature unknown; restored from __doc__
  
        """
  
        S.splitlines([keepends]) -> list of strings
  

  
        Return a list of the lines in S, breaking at line boundaries.
  
        Line breaks are not included in the resulting list unless keepends
  
        is given and true.
  
        """
  
        return []
  

  
    def startswith(self, prefix, start=None, end=None): # real signature unknown; restored from __doc__
  
        """
  
        S.startswith(prefix[, start[, end]]) -> bool
  

  
        Return True if S starts with the specified prefix, False otherwise.
  
        With optional start, test S beginning at that position.
  
        With optional end, stop comparing S at that position.
  
        prefix can also be a tuple of strings to try.
  
        """
  
        return False
  

  
    def strip(self, chars=None): # real signature unknown; restored from __doc__
  
        """
  
        S.strip([chars]) -> str
  

  
        Return a copy of the string S with leading and trailing
  
        whitespace removed.
  
        If chars is given and not None, remove characters in chars instead.
  
        """
  
        return ""
  

  
    def swapcase(self): # real signature unknown; restored from __doc__
  
        """
  
        S.swapcase() -> str
  

  
        Return a copy of S with uppercase characters converted to lowercase
  
        and vice versa.
  
        """
  
        return ""
  

  
    def title(self): # real signature unknown; restored from __doc__
  
        """
  
        S.title() -> str
  

  
        Return a titlecased version of S, i.e. words start with title case
  
        characters, all remaining cased characters have lower case.
  
        """
  
        return ""
  

  
    def translate(self, table): # real signature unknown; restored from __doc__
  
        """
  
        S.translate(table) -> str
  

  
        Return a copy of the string S in which each character has been mapped
  
        through the given translation table. The table must implement
  
        lookup/indexing via __getitem__, for instance a dictionary or list,
  
        mapping Unicode ordinals to Unicode ordinals, strings, or None. If
  
        this operation raises LookupError, the character is left untouched.
  
        Characters mapped to None are deleted.
  
        """
  
        return ""
  

  
    def upper(self): # real signature unknown; restored from __doc__
  
        """
  
        S.upper() -> str
  

  
        Return a copy of S converted to uppercase.
  
        """
  
        return ""
  

  
    def zfill(self, width): # real signature unknown; restored from __doc__
  
        """
  
        S.zfill(width) -> str
  

  
        Pad a numeric string S with zeros on the left, to fill a field
  
        of the specified width. The string S is never truncated.
  
        """
  
        return ""
  

  
    def __add__(self, *args, **kwargs): # real signature unknown
  
        """ Return self+value. """
  
        pass
  

  
    def __contains__(self, *args, **kwargs): # real signature unknown
  
        """ Return key in self. """
  
        pass
  

  
    def __eq__(self, *args, **kwargs): # real signature unknown
  
        """ Return self==value. """
  
        pass
  

  
    def __format__(self, format_spec): # real signature unknown; restored from __doc__
  
        """
  
        S.__format__(format_spec) -> str
  

  
        Return a formatted version of S as described by format_spec.
  
        """
  
        return ""
  

  
    def __getattribute__(self, *args, **kwargs): # real signature unknown
  
        """ Return getattr(self, name). """
  
        pass
  

  
    def __getitem__(self, *args, **kwargs): # real signature unknown
  
        """ Return self[key]. """
  
        pass
  

  
    def __getnewargs__(self, *args, **kwargs): # real signature unknown
  
        pass
  

  
    def __ge__(self, *args, **kwargs): # real signature unknown
  
        """ Return self>=value. """
  
        pass
  

  
    def __gt__(self, *args, **kwargs): # real signature unknown
  
        """ Return self>value. """
  
        pass
  

  
    def __hash__(self, *args, **kwargs): # real signature unknown
  
        """ Return hash(self). """
  
        pass
  

  
    def __init__(self, value='', encoding=None, errors='strict'): # known special case of str.__init__
  
        """
  
        str(object='') -> str
  
        str(bytes_or_buffer[, encoding[, errors]]) -> str
  

  
        Create a new string object from the given object. If encoding or
  
        errors is specified, then the object must expose a data buffer
  
        that will be decoded using the given encoding and error handler.
  
        Otherwise, returns the result of object.__str__() (if defined)
  
        or repr(object).
  
        encoding defaults to sys.getdefaultencoding().
  
        errors defaults to 'strict'.
  
        # (copied from class doc)
  
        """
  
        pass
  

  
    def __iter__(self, *args, **kwargs): # real signature unknown
  
        """ Implement iter(self). """
  
        pass
  

  
    def __len__(self, *args, **kwargs): # real signature unknown
  
        """ Return len(self). """
  
        pass
  

  
    def __le__(self, *args, **kwargs): # real signature unknown
  
        &quot;&quot;&quot; Return self<=value. &quot;&quot;&quot;
  
        pass
  

  
    def __lt__(self, *args, **kwargs): # real signature unknown
  
        &quot;&quot;&quot; Return self<value. &quot;&quot;&quot;
  
        pass
  

  
    def __mod__(self, *args, **kwargs): # real signature unknown
  
        &quot;&quot;&quot; Return self%value. &quot;&quot;&quot;
  
        pass
  

  
    def __mul__(self, *args, **kwargs): # real signature unknown
  
        &quot;&quot;&quot; Return self*value.n &quot;&quot;&quot;
  
        pass
  

  
    @staticmethod # known case of __new__
  
    def __new__(*args, **kwargs): # real signature unknown
  
        &quot;&quot;&quot; Create and return a new object.  See help(type) for accurate signature. &quot;&quot;&quot;
  
        pass
  

  
    def __ne__(self, *args, **kwargs): # real signature unknown
  
        &quot;&quot;&quot; Return self!=value. &quot;&quot;&quot;
  
        pass
  

  
    def __repr__(self, *args, **kwargs): # real signature unknown
  
        &quot;&quot;&quot; Return repr(self). &quot;&quot;&quot;
  
        pass
  

  
    def __rmod__(self, *args, **kwargs): # real signature unknown
  
        &quot;&quot;&quot; Return value%self. &quot;&quot;&quot;
  
        pass
  

  
    def __rmul__(self, *args, **kwargs): # real signature unknown
  
        &quot;&quot;&quot; Return self*value. &quot;&quot;&quot;
  
        pass
  

  
    def __sizeof__(self): # real signature unknown; restored from __doc__
  
        &quot;&quot;&quot; S.__sizeof__() -> size of S in memory, in bytes &quot;&quot;&quot;
  
        pass
  

  
    def __str__(self, *args, **kwargs): # real signature unknown
  
        &quot;&quot;&quot; Return str(self). &quot;&quot;&quot;
  
        pass

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