class str(basestring):    """    str(object=‘‘) -> string        Return a nice string representation of the object.    If the argument is a string, the return value is the same object.    """    def capitalize(self):          """ 首字母变大写 """        """        S.capitalize() -> string                Return a copy of the string S with only its first character        capitalized.        """        return ""    def center(self, width, fillchar=None):          """ 内容居中，width：总长度；fillchar：空白处填充内容，默认无 """        """        S.center(width[, fillchar]) -> string                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):          """ 子序列个数 """        """        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 decode(self, encoding=None, errors=None):          """ 解码 """        """        S.decode([encoding[,errors]]) -> object                Decodes S using the codec registered for encoding. encoding defaults        to the default encoding. errors may be given to set a different error        handling scheme. Default is ‘strict‘ meaning that encoding errors raise        a UnicodeDecodeError. Other possible values are ‘ignore‘ and ‘replace‘        as well as any other name registered with codecs.register_error that is        able to handle UnicodeDecodeErrors.        """        return object()    def encode(self, encoding=None, errors=None):          """ 编码，针对unicode """        """        S.encode([encoding[,errors]]) -> object                Encodes S using the codec registered for encoding. encoding defaults        to the default encoding. 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 is able to handle UnicodeEncodeErrors.        """        return object()    def endswith(self, suffix, start=None, end=None):          """ 是否以 xxx 结束 """        """        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=None):          """ 将tab转换成空格，默认一个tab转换成8个空格 """        """        S.expandtabs([tabsize]) -> string                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):          """ 寻找子序列位置，如果没找到，返回 -1 """        """        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(*args, **kwargs): # known special case of str.format        """ 字符串格式化，动态参数，将函数式编程时细说 """        """        S.format(*args, **kwargs) -> string                Return a formatted version of S, using substitutions from args and kwargs.        The substitutions are identified by braces (‘{‘ and ‘}‘).        """        pass    def index(self, sub, start=None, end=None):          """ 子序列位置，如果没找到，报错 """        S.index(sub [,start [,end]]) -> int                Like S.find() but raise ValueError when the substring is not found.        """        return 0    def isalnum(self):          """ 是否是字母和数字 """        """        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):          """ 是否是字母 """        """        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 isdigit(self):          """ 是否是数字 """        """        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 islower(self):          """ 是否小写 """        """        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 isspace(self):          """        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):          """        S.istitle() -> bool                Return True if S is a titlecased string and there is at least one        character in S, i.e. uppercase characters may only follow uncased        characters and lowercase characters only cased ones. Return False        otherwise.        """        return False    def isupper(self):          """        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):          """ 连接 """        """        S.join(iterable) -> string                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):          """ 内容左对齐，右侧填充 """        """        S.ljust(width[, fillchar]) -> string                Return S left-justified in a string of length width. Padding is        done using the specified fill character (default is a space).        """        return ""    def lower(self):          """ 变小写 """        """        S.lower() -> string                Return a copy of the string S converted to lowercase.        """        return ""    def lstrip(self, chars=None):          """ 移除左侧空白 """        """        S.lstrip([chars]) -> string or unicode                Return a copy of the string S with leading whitespace removed.        If chars is given and not None, remove characters in chars instead.        If chars is unicode, S will be converted to unicode before stripping        """        return ""    def partition(self, sep):          """ 分割，前，中，后三部分 """        """        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):          """ 替换 """        """        S.replace(old, new[, count]) -> string                Return a copy of string 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):          """        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):          """        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):          """        S.rjust(width[, fillchar]) -> string                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):          """        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=None):          """        S.rsplit([sep [,maxsplit]]) -> list of strings                Return a list of the words in the string 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 or is None, any whitespace string        is a separator.        """        return []    def rstrip(self, chars=None):          """        S.rstrip([chars]) -> string or unicode                Return a copy of the string S with trailing whitespace removed.        If chars is given and not None, remove characters in chars instead.        If chars is unicode, S will be converted to unicode before stripping        """        return ""    def split(self, sep=None, maxsplit=None):          """ 分割， maxsplit最多分割几次 """        """        S.split([sep [,maxsplit]]) -> list of strings                Return a list of the words in the string 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=False):          """ 根据换行分割 """        """        S.splitlines(keepends=False) -> 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):          """ 是否起始 """        """        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):          """ 移除两段空白 """        """        S.strip([chars]) -> string or unicode                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.        If chars is unicode, S will be converted to unicode before stripping        """        return ""    def swapcase(self):          """ 大写变小写，小写变大写 """        """        S.swapcase() -> string                Return a copy of the string S with uppercase characters        converted to lowercase and vice versa.        """        return ""    def title(self):          """        S.title() -> string                Return a titlecased version of S, i.e. words start with uppercase        characters, all remaining cased characters have lowercase.        """        return ""    def translate(self, table, deletechars=None):          """        转换，需要先做一个对应表，最后一个表示删除字符集合        intab = "aeiou"        outtab = "12345"        trantab = maketrans(intab, outtab)        str = "this is string example....wow!!!"        print str.translate(trantab, ‘xm‘)        """        """        S.translate(table [,deletechars]) -> string                Return a copy of the string S, where all characters occurring        in the optional argument deletechars are removed, and the        remaining characters have been mapped through the given        translation table, which must be a string of length 256 or None.        If the table argument is None, no translation is applied and        the operation simply removes the characters in deletechars.        """        return ""    def upper(self):          """        S.upper() -> string                Return a copy of the string S converted to uppercase.        """        return ""    def zfill(self, width):          """方法返回指定长度的字符串，原字符串右对齐，前面填充0。"""        """        S.zfill(width) -> string                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 _formatter_field_name_split(self, *args, **kwargs): # real signature unknown        pass    def _formatter_parser(self, *args, **kwargs): # real signature unknown        pass    def __add__(self, y):          """ x.__add__(y) <==> x+y """        pass    def __contains__(self, y):          """ x.__contains__(y) <==> y in x """        pass    def __eq__(self, y):          """ x.__eq__(y) <==> x==y """        pass    def __format__(self, format_spec):          """        S.__format__(format_spec) -> string                Return a formatted version of S as described by format_spec.        """        return ""    def __getattribute__(self, name):          """ x.__getattribute__(‘name‘) <==> x.name """        pass    def __getitem__(self, y):          """ x.__getitem__(y) <==> x[y] """        pass    def __getnewargs__(self, *args, **kwargs): # real signature unknown        pass    def __getslice__(self, i, j):          """        x.__getslice__(i, j) <==> x[i:j]                                      Use of negative indices is not supported.        """        pass    def __ge__(self, y):          """ x.__ge__(y) <==> x>=y """        pass    def __gt__(self, y):          """ x.__gt__(y) <==> x>y """        pass    def __hash__(self):          """ x.__hash__() <==> hash(x) """        pass    def __init__(self, string=‘‘): # known special case of str.__init__        """        str(object=‘‘) -> string                Return a nice string representation of the object.        If the argument is a string, the return value is the same object.        # (copied from class doc)        """        pass    def __len__(self):          """ x.__len__() <==> len(x) """        pass    def __le__(self, y):          """ x.__le__(y) <==> x<=y """        pass    def __lt__(self, y):          """ x.__lt__(y) <==> x<y """        pass    def __mod__(self, y):          """ x.__mod__(y) <==> x%y """        pass    def __mul__(self, n):          """ x.__mul__(n) <==> x*n """        pass    @staticmethod # known case of __new__    def __new__(S, *more):          """ T.__new__(S, ...) -> a new object with type S, a subtype of T """        pass    def __ne__(self, y):          """ x.__ne__(y) <==> x!=y """        pass    def __repr__(self):          """ x.__repr__() <==> repr(x) """        pass    def __rmod__(self, y):          """ x.__rmod__(y) <==> y%x """        pass    def __rmul__(self, n):          """ x.__rmul__(n) <==> n*x """        pass    def __sizeof__(self):          """ S.__sizeof__() -> size of S in memory, in bytes """        pass    def __str__(self):          """ x.__str__() <==> str(x) """        passstrstr