1.2python基础_数字类型_数字(Number)类型

一、整型（int型、整数）

整型 等价于c中的有符号长整型（long）

与系统的最大整型一致（如32位机器上的整型是32位，64位机器上的整型是64位），

可以表示的整数范围在[-sys.maxint-1, sys.maxint]之间。整型字面值的表示方法有3种：

十进制（常用）、八进制（以数字“0”开头）和十六进制（以“0x”或“0x”开头）。

整型的标准库操作有如下

 

  1 class int(object):
  2     """
  3     int([x]) -> integer
  4     int(x, base=10) -> integer
  5     
  6     convert a number or string to an integer, or return 0 if no arguments
  7     are given.  if x is a number, return x.__int__().  for floating point
  8     numbers, this truncates towards zero.
  9     
 10     if x is not a number or if base is given, then x must be a string,
 11     bytes, or bytearray instance representing an integer literal in the
 12     given base.  the literal can be preceded by '+' or '-' and be surrounded
 13     by whitespace.  the base defaults to 10.  valid bases are 0 and 2-36.
 14     base 0 means to interpret the base from the string as an integer literal.
 15     >>> int('0b100', base=0)
 16     4
 17     """
 18     def bit_length(self): # real signature unknown; restored from __doc__
 19         """
 20         number of bits necessary to represent self in binary.
 21         
 22         >>> bin(37)
 23         '0b100101'
 24         >>> (37).bit_length()
 25         6
 26         """
 27         pass
 28 
 29     def conjugate(self, *args, **kwargs): # real signature unknown
 30         """ returns self, the complex conjugate of any int. """
 31         pass
 32 
 33     @classmethod # known case
 34     def from_bytes(cls, *args, **kwargs): # real signature unknown
 35         """
 36         return the integer represented by the given array of bytes.
 37         
 38           bytes
 39             holds the array of bytes to convert.  the argument must either
 40             support the buffer protocol or be an iterable object producing bytes.
 41             bytes and bytearray are examples of built-in objects that support the
 42             buffer protocol.
 43           byteorder
 44             the byte order used to represent the integer.  if byteorder is 'big',
 45             the most significant byte is at the beginning of the byte array.  if
 46             byteorder is 'little', the most significant byte is at the end of the
 47             byte array.  to request the native byte order of the host system, use
 48             `sys.byteorder' as the byte order value.
 49           signed
 50             indicates whether two's complement is used to represent the integer.
 51         """
 52         pass
 53 
 54     def to_bytes(self, *args, **kwargs): # real signature unknown
 55         """
 56         return an array of bytes representing an integer.
 57         
 58           length
 59             length of bytes object to use.  an overflowerror is raised if the
 60             integer is not representable with the given number of bytes.
 61           byteorder
 62             the byte order used to represent the integer.  if byteorder is 'big',
 63             the most significant byte is at the beginning of the byte array.  if
 64             byteorder is 'little', the most significant byte is at the end of the
 65             byte array.  to request the native byte order of the host system, use
 66             `sys.byteorder' as the byte order value.
 67           signed
 68             determines whether two's complement is used to represent the integer.
 69             if signed is false and a negative integer is given, an overflowerror
 70             is raised.
 71         """
 72         pass
 73 
 74     def __abs__(self, *args, **kwargs): # real signature unknown
 75         """ abs(self) """
 76         pass
 77 
 78     def __add__(self, *args, **kwargs): # real signature unknown
 79         """ return self+value. """
 80         pass
 81 
 82     def __and__(self, *args, **kwargs): # real signature unknown
 83         """ return self&value. """
 84         pass
 85 
 86     def __bool__(self, *args, **kwargs): # real signature unknown
 87         """ self != 0 """
 88         pass
 89 
 90     def __ceil__(self, *args, **kwargs): # real signature unknown
 91         """ ceiling of an integral returns itself. """
 92         pass
 93 
 94     def __divmod__(self, *args, **kwargs): # real signature unknown
 95         """ return divmod(self, value). """
 96         pass
 97 
 98     def __eq__(self, *args, **kwargs): # real signature unknown
 99         """ return self==value. """
100         pass
101 
102     def __float__(self, *args, **kwargs): # real signature unknown
103         """ float(self) """
104         pass
105 
106     def __floordiv__(self, *args, **kwargs): # real signature unknown
107         """ return self//value. """
108         pass
109 
110     def __floor__(self, *args, **kwargs): # real signature unknown
111         """ flooring an integral returns itself. """
112         pass
113 
114     def __format__(self, *args, **kwargs): # real signature unknown
115         pass
116 
117     def __getattribute__(self, *args, **kwargs): # real signature unknown
118         """ return getattr(self, name). """
119         pass
120 
121     def __getnewargs__(self, *args, **kwargs): # real signature unknown
122         pass
123 
124     def __ge__(self, *args, **kwargs): # real signature unknown
125         """ return self>=value. """
126         pass
127 
128     def __gt__(self, *args, **kwargs): # real signature unknown
129         """ return self>value. """
130         pass
131 
132     def __hash__(self, *args, **kwargs): # real signature unknown
133         """ return hash(self). """
134         pass
135 
136     def __index__(self, *args, **kwargs): # real signature unknown
137         """ return self converted to an integer, if self is suitable for use as an index into a list. """
138         pass
139 
140     def __init__(self, x, base=10): # known special case of int.__init__
141         """
142         int([x]) -> integer
143         int(x, base=10) -> integer
144         
145         convert a number or string to an integer, or return 0 if no arguments
146         are given.  if x is a number, return x.__int__().  for floating point
147         numbers, this truncates towards zero.
148         
149         if x is not a number or if base is given, then x must be a string,
150         bytes, or bytearray instance representing an integer literal in the
151         given base.  the literal can be preceded by '+' or '-' and be surrounded
152         by whitespace.  the base defaults to 10.  valid bases are 0 and 2-36.
153         base 0 means to interpret the base from the string as an integer literal.
154         >>> int('0b100', base=0)
155         4
156         # (copied from class doc)
157         """
158         pass
159 
160     def __int__(self, *args, **kwargs): # real signature unknown
161         """ int(self) """
162         pass
163 
164     def __invert__(self, *args, **kwargs): # real signature unknown
165         """ ~self """
166         pass
167 
168     def __le__(self, *args, **kwargs): # real signature unknown
169         """ return self<=value. """
170         pass
171 
172     def __lshift__(self, *args, **kwargs): # real signature unknown
173         """ return self<<value. """
174         pass
175 
176     def __lt__(self, *args, **kwargs): # real signature unknown
177         """ return self<value. """
178         pass
179 
180     def __mod__(self, *args, **kwargs): # real signature unknown
181         """ return self%value. """
182         pass
183 
184     def __mul__(self, *args, **kwargs): # real signature unknown
185         """ return self*value. """
186         pass
187 
188     def __neg__(self, *args, **kwargs): # real signature unknown
189         """ -self """
190         pass
191 
192     @staticmethod # known case of __new__
193     def __new__(*args, **kwargs): # real signature unknown
194         """ create and return a new object.  see help(type) for accurate signature. """
195         pass
196 
197     def __ne__(self, *args, **kwargs): # real signature unknown
198         """ return self!=value. """
199         pass
200 
201     def __or__(self, *args, **kwargs): # real signature unknown
202         """ return self|value. """
203         pass
204 
205     def __pos__(self, *args, **kwargs): # real signature unknown
206         """ +self """
207         pass
208 
209     def __pow__(self, *args, **kwargs): # real signature unknown
210         """ return pow(self, value, mod). """
211         pass
212 
213     def __radd__(self, *args, **kwargs): # real signature unknown
214         """ return value+self. """
215         pass
216 
217     def __rand__(self, *args, **kwargs): # real signature unknown
218         """ return value&self. """
219         pass
220 
221     def __rdivmod__(self, *args, **kwargs): # real signature unknown
222         """ return divmod(value, self). """
223         pass
224 
225     def __repr__(self, *args, **kwargs): # real signature unknown
226         """ return repr(self). """
227         pass
228 
229     def __rfloordiv__(self, *args, **kwargs): # real signature unknown
230         """ return value//self. """
231         pass
232 
233     def __rlshift__(self, *args, **kwargs): # real signature unknown
234         """ return value<<self. """
235         pass
236 
237     def __rmod__(self, *args, **kwargs): # real signature unknown
238         """ return value%self. """
239         pass
240 
241     def __rmul__(self, *args, **kwargs): # real signature unknown
242         """ return value*self. """
243         pass
244 
245     def __ror__(self, *args, **kwargs): # real signature unknown
246         """ return value|self. """
247         pass
248 
249     def __round__(self, *args, **kwargs): # real signature unknown
250         """
251         rounding an integral returns itself.
252         rounding with an ndigits argument also returns an integer.
253         """
254         pass
255 
256     def __rpow__(self, *args, **kwargs): # real signature unknown
257         """ return pow(value, self, mod). """
258         pass
259 
260     def __rrshift__(self, *args, **kwargs): # real signature unknown
261         """ return value>>self. """
262         pass
263 
264     def __rshift__(self, *args, **kwargs): # real signature unknown
265         """ return self>>value. """
266         pass
267 
268     def __rsub__(self, *args, **kwargs): # real signature unknown
269         """ return value-self. """
270         pass
271 
272     def __rtruediv__(self, *args, **kwargs): # real signature unknown
273         """ return value/self. """
274         pass
275 
276     def __rxor__(self, *args, **kwargs): # real signature unknown
277         """ return value^self. """
278         pass
279 
280     def __sizeof__(self, *args, **kwargs): # real signature unknown
281         """ returns size in memory, in bytes. """
282         pass
283 
284     def __str__(self, *args, **kwargs): # real signature unknown
285         """ return str(self). """
286         pass
287 
288     def __sub__(self, *args, **kwargs): # real signature unknown
289         """ return self-value. """
290         pass
291 
292     def __truediv__(self, *args, **kwargs): # real signature unknown
293         """ return self/value. """
294         pass
295 
296     def __trunc__(self, *args, **kwargs): # real signature unknown
297         """ truncating an integral returns itself. """
298         pass
299 
300     def __xor__(self, *args, **kwargs): # real signature unknown
301         """ return self^value. """
302         pass
303 
304     denominator = property(lambda self: object(), lambda self, v: none, lambda self: none)  # default
305     """the denominator of a rational number in lowest terms"""
306 
307     imag = property(lambda self: object(), lambda self, v: none, lambda self: none)  # default
308     """the imaginary part of a complex number"""
309 
310     numerator = property(lambda self: object(), lambda self, v: none, lambda self: none)  # default
311     """the numerator of a rational number in lowest terms"""
312 
313     real = property(lambda self: object(), lambda self, v: none, lambda self: none)  # default
314     """the real part of a complex number"""