mirror of
https://github.com/beyondx/Notes.git
synced 2026-02-03 10:23:27 +08:00
38 lines
949 B
Plaintext
38 lines
949 B
Plaintext
Content-Type: text/x-zim-wiki
|
||
Wiki-Format: zim 0.4
|
||
Creation-Date: 2012-10-04T13:20:52+08:00
|
||
|
||
====== int long ======
|
||
Created Thursday 04 October 2012
|
||
|
||
>>> 1&2 #按__位与__
|
||
0
|
||
|
||
>>> 0xff&0xf1 #按位与
|
||
241
|
||
>>> 0xff&0xf0
|
||
240
|
||
>>> __hex__(0xff&0xf0) #返回的__字符串__
|
||
'0xf0'
|
||
__与hex()类似, bin(), oct()等返回的都是int或long型的字符串代表__
|
||
|
||
>>> 1&&2 __#python没有&&, ||, !逻辑运算符，但是有and, or, not，而且这三个逻辑运算符返回的是最后一个元素的内容__
|
||
File "<stdin>", line 1
|
||
1&&2
|
||
^
|
||
SyntaxError: invalid syntax
|
||
|
||
>>> 1 and 2 __#返回的是最后一个元素的内容而不是True或False，这里为2__
|
||
2
|
||
|
||
>>> 'fff' & 'dfad' __#str类型没有定义__and__方法，所以没有位运算__
|
||
Traceback (most recent call last):
|
||
File "<stdin>", line 1, in <module>
|
||
TypeError: unsupported operand type(s) for &: 'str' and 'str'
|
||
>>> help(str)
|
||
|
||
>>> 'fff' and 'dfad'
|
||
'dfad'
|
||
>>>
|
||
|