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int(整数)功能详解

时间:2016-01-14 13:58:59      阅读:191      评论:0      收藏:0      [点我收藏+]

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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
        print (int.bit_length(12))
        4

    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
        print (int.__abs__(12))
        12

    def __add__(self, y):
        """ x.__add__(y) <==> x+y """
        pass
    print (int.__add__(1,2))
    3相加

    def __and__(self, y):
        """ x.__and__(y) <==> x&y """
        pass
        与
    
    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) """
        pa
    print (int.__divmod__(1,2))
    0,1 1/2 等于0余数1
    
    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
        print  (int.__float__(1))
        1.0

    def __floordiv__(self, y):
        """ x.__floordiv__(y) <==> x//y """
        pass
        print  (int.__floordiv__(10,5))
        2 整除

    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
    print (int.__int__(1))
    
    
    def __invert__(self):
        """ x.__invert__() <==> ~x """
        pass

    def __long__(self):
        """ 转换为长整数 """
        """ x.__long__() <==> long(x) """
        pass
    int._long_(11232)
    
    def __lshift__(self, y):
        """ x.__lshift__(y) <==> x<<y """
        pass
    print(int.__lshift__(1,2))
    4 幂,次方
        
    def __mod__(self, y):
        """ x.__mod__(y) <==> x%y """
        pass
    print(int.__mod__(11,5))
    取余数

    def __mul__(self, y):
        """ x.__mul__(y) <==> x*y """
        pass
    print(int.__mul__(2,3))
    乘法
    
    def __neg__(self):
        """ x.__neg__() <==> -x """
        pass
    print(int.__neg__(5)) 转换为负数
    
    @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
        或

    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
        print(int.__pow__(2,8))
        

    def __radd__(self, y):
        """ x.__radd__(y) <==> y+x """
        pass
        print (int.__radd__(5,6)) 11加

    def __rand__(self, y):
        """ x.__rand__(y) <==> y&x """
        pass
        print (int.__rand__(100,2)) 与
    
    def __rdivmod__(self, y):
        """ x.__rdivmod__(y) <==> divmod(y, x) """
        pass
        print(int.__rdivmod__(10,2)) 0,2
        
        
    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
    print(int.__repr__(1))
    
    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
    print(int.__repr__(1))

    def __rfloordiv__(self, y):
        """ x.__rfloordiv__(y) <==> y//x """
        pass
    整除

    def __rlshift__(self, y):
        """ x.__rlshift__(y) <==> y<<x """
        pass
    print(int.__rlshift__(1,2)) 4右运算,八进制右移2位    

    def __rmod__(self, y):
     """ x.__rmod__(y) <==> y%x """
     pass
    print(int.__rmod__(3,10))1 取余数
    
    def __rmul__(self, y):
        """ x.__rmul__(y) <==> y*x """
        pass
    print(int.__rmul__(2,4))8乘
    
    def __ror__(self, y):
        """ x.__ror__(y) <==> y|x """
        pass
    print(int.__ror__(2,3)) 3换位与运算

    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
    左运算符
        
    def __rshift__(self, y):
        """ x.__rshift__(y) <==> x>>y """
        pass
    print(int.__rrshift__(2,16)) 4 八进制右移运算
        
    def __rsub__(self, y):
        """ x.__rsub__(y) <==> y-x """
        pass
    print(int.__rsub__(2,5))3 减法
        
    def __rtruediv__(self, y):
        """ x.__rtruediv__(y) <==> y/x """
        pass
    print(int.__truediv__(10,2)) 5.0除法
        
    def __rxor__(self, y):
        """ x.__rxor__(y) <==> y+x """
        pass
    print(int.__rxor__(2,8))加法    

    def __sub__(self, y):
        """ x.__sub__(y) <==> x-y """
        pass
        print(int.__sub__(5,3)) 2 减法
        
    def __truediv__(self, y):
        """ x.__truediv__(y) <==> x/y """
        pass
    print(int.__truediv__(5,2))2.5 除法
        
    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(整数)功能详解

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原文地址:http://www.cnblogs.com/dahuige/p/5129783.html

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