一：数字 int

int(整型)：

　　在32位机器上，整数的位数为32位，取值范围为-2**31～2**31-1，即-2147483648～2147483647
　　在64位系统上，整数的位数为64位，取值范围为-2**63～2**63-1，即-9223372036854775808～9223372036854775807

long（长整型）：

　　跟C语言不同，Python的长整数没有指定位宽，即：Python没有限制长整数数值的大小，但实际上由于机器内存有限，我们使用的长整数数值不可能无限大

　　注意：自从python2.2起，如果整数发生溢出，python会自动将整数数据转换为长整数，所以如今在长整数数据后面不加字母L也不会导致严重后果了

float（浮点型）：

　　浮点数用来处理实数，即带有小数的数字，类似于C语言中的double类型，占8个字节（64位），其中52位表示底，11位表示指数，剩下一位表示符号

class int(object):
    """
    int(x=0) -> int or long
    int(x, base=10) -> int or long
 
    Convert a number or string to an integer, or return 0 if no arguments
    are given.  If x is floating point, the conversion truncates towards zero.
    If x is outside the integer range, the function returns a long instead.
 
    If x is not a number or if base is given, then x must be a string or
    Unicode object representing an integer literal in the given base.  The
    literal can be preceded by '+' or '-' and be surrounded by whitespace.
    The base defaults to 10.  Valid bases are 0 and 2-36.  Base 0 means to
    interpret the base from the string as an integer literal.
    >>> int('0b100', base=0)
    """
    def bit_length(self):
        """ 返回表示该数字的时占用的最少位数 """
        """
        int.bit_length() -> int
 
        Number of bits necessary to represent self in binary.
        >>> bin(37)
        '0b100101'
        >>> (37).bit_length()
        """
        return 0
 
    def conjugate(self, *args, **kwargs): # real signature unknown
        """ 返回该复数的共轭复数 """
        """ Returns self, the complex conjugate of any int. """
        pass
 
    def __abs__(self):
        """ 返回绝对值 """
        """ x.__abs__() <==> abs(x) """
        pass
 
    def __add__(self, y):
        """ x.__add__(y) <==> x+y """
        pass
 
    def __and__(self, y):
        """ x.__and__(y) <==> x&y """
        pass
 
    def __cmp__(self, y):
        """ 比较两个数大小 """
        """ x.__cmp__(y) <==> cmp(x,y) """
        pass
 
    def __coerce__(self, y):
        """ 强制生成一个元组 """
        """ x.__coerce__(y) <==> coerce(x, y) """
        pass
 
    def __divmod__(self, y):
        """ 相除，得到商和余数组成的元组 """
        """ x.__divmod__(y) <==> divmod(x, y) """
        pass
 
    def __div__(self, y):
        """ x.__div__(y) <==> x/y """
        pass
 
    def __float__(self):
        """ 转换为浮点类型 """
        """ x.__float__() <==> float(x) """
        pass
 
    def __floordiv__(self, y):
        """ x.__floordiv__(y) <==> x//y """
        pass
 
    def __format__(self, *args, **kwargs): # real signature unknown
        pass
 
    def __getattribute__(self, name):
        """ x.__getattribute__('name') <==> x.name """
        pass
 
    def __getnewargs__(self, *args, **kwargs): # real signature unknown
        """ 内部调用 __new__方法或创建对象时传入参数使用 """
        pass
 
    def __hash__(self):
        """如果对象object为哈希表类型，返回对象object的哈希值。哈希值为整数。在字典查找中，哈希值用于快速比较字典的键。两个数值如果相等，则哈希值也相等。"""
        """ x.__hash__() <==> hash(x) """
        pass
 
    def __hex__(self):
        """ 返回当前数的 十六进制 表示 """
        """ x.__hex__() <==> hex(x) """
        pass
 
    def __index__(self):
        """ 用于切片，数字无意义 """
        """ x[y:z] <==> x[y.__index__():z.__index__()] """
        pass
 
    def __init__(self, x, base=10): # known special case of int.__init__
        """ 构造方法，执行 x = 123 或 x = int(10) 时，自动调用，暂时忽略 """
        """
        int(x=0) -> int or long
        int(x, base=10) -> int or long
 
        Convert a number or string to an integer, or return 0 if no arguments
        are given.  If x is floating point, the conversion truncates towards zero.
        If x is outside the integer range, the function returns a long instead.
 
        If x is not a number or if base is given, then x must be a string or
        Unicode object representing an integer literal in the given base.  The
        literal can be preceded by '+' or '-' and be surrounded by whitespace.
        The base defaults to 10.  Valid bases are 0 and 2-36.  Base 0 means to
        interpret the base from the string as an integer literal.
        >>> int('0b100', base=0)
        # (copied from class doc)
        """
        pass
 
    def __int__(self):
        """ 转换为整数 """
        """ x.__int__() <==> int(x) """
        pass
 
    def __invert__(self):
        """ x.__invert__() <==> ~x """
        pass
 
    def __long__(self):
        """ 转换为长整数 """
        """ x.__long__() <==> long(x) """
        pass
 
    def __lshift__(self, y):
        """ x.__lshift__(y) <==> x<<y """
        pass
 
    def __mod__(self, y):
        """ x.__mod__(y) <==> x%y """
        pass
 
    def __mul__(self, y):
        """ x.__mul__(y) <==> x*y """
        pass
 
    def __neg__(self):
        """ x.__neg__() <==> -x """
        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 __nonzero__(self):
        """ x.__nonzero__() <==> x != 0 """
        pass
 
    def __oct__(self):
        """ 返回改值的 八进制 表示 """
        """ x.__oct__() <==> oct(x) """
        pass
 
    def __or__(self, y):
        """ x.__or__(y) <==> x|y """
        pass
 
    def __pos__(self):
        """ x.__pos__() <==> +x """
        pass
 
    def __pow__(self, y, z=None):
        """ 幂，次方 """
        """ x.__pow__(y[, z]) <==> pow(x, y[, z]) """
        pass
 
    def __radd__(self, y):
        """ x.__radd__(y) <==> y+x """
        pass
 
    def __rand__(self, y):
        """ x.__rand__(y) <==> y&x """
        pass
 
    def __rdivmod__(self, y):
        """ x.__rdivmod__(y) <==> divmod(y, x) """
        pass
 
    def __rdiv__(self, y):
        """ x.__rdiv__(y) <==> y/x """
        pass
 
    def __repr__(self):
        """转化为解释器可读取的形式 """
        """ x.__repr__() <==> repr(x) """
        pass
 
    def __str__(self):
        """转换为人阅读的形式，如果没有适于人阅读的解释形式的话，则返回解释器课阅读的形式"""
        """ x.__str__() <==> str(x) """
        pass
 
    def __rfloordiv__(self, y):
        """ x.__rfloordiv__(y) <==> y//x """
        pass
 
    def __rlshift__(self, y):
        """ x.__rlshift__(y) <==> y<<x """
        pass
 
    def __rmod__(self, y):
        """ x.__rmod__(y) <==> y%x """
        pass
 
    def __rmul__(self, y):
        """ x.__rmul__(y) <==> y*x """
        pass
 
    def __ror__(self, y):
        """ x.__ror__(y) <==> y|x """
        pass
 
    def __rpow__(self, x, z=None):
        """ y.__rpow__(x[, z]) <==> pow(x, y[, z]) """
        pass
 
    def __rrshift__(self, y):
        """ x.__rrshift__(y) <==> y>>x """
        pass
 
    def __rshift__(self, y):
        """ x.__rshift__(y) <==> x>>y """
        pass
 
    def __rsub__(self, y):
        """ x.__rsub__(y) <==> y-x """
        pass
 
    def __rtruediv__(self, y):
        """ x.__rtruediv__(y) <==> y/x """
        pass
 
    def __rxor__(self, y):
        """ x.__rxor__(y) <==> y^x """
        pass
 
    def __sub__(self, y):
        """ x.__sub__(y) <==> x-y """
        pass
 
    def __truediv__(self, y):
        """ x.__truediv__(y) <==> x/y """
        pass
 
    def __trunc__(self, *args, **kwargs):
        """ 返回数值被截取为整形的值，在整形中无意义 """
        pass
 
    def __xor__(self, y):
        """ x.__xor__(y) <==> x^y """
        pass
 
    denominator = property(lambda self: object(), lambda self, v: None, lambda self: None)  # default
    """ 分母 = 1 """
    """the denominator of a rational number in lowest terms"""
 
    imag = property(lambda self: object(), lambda self, v: None, lambda self: None)  # default
    """ 虚数，无意义 """
    """the imaginary part of a complex number"""
 
    numerator = property(lambda self: object(), lambda self, v: None, lambda self: None)  # default
    """ 分子 = 数字大小 """
    """the numerator of a rational number in lowest terms"""
 
    real = property(lambda self: object(), lambda self, v: None, lambda self: None)  # default
    """ 实属，无意义 """
    """the real part of a complex number"""
 
int

int

二：字符串 str

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 x