s.remove() 删除目标元素,但集合中如无元素,会报错 del 不支持set集合的删除 栗子: >>> b={'hello', 1, 3, 'cc', 'dx'} >>> type(b) <class 'set'> >>> b.pop('dx') Traceback (most recent call last): File "<stdin>", line 1, in <module>
File"D:/pythonproject/work/venv/myplan/day28/描述符应用.py", line 37,in<module>运行set p1= People("东方不败","99", 1000) File"D:/pythonproject/work/venv/myplan/day28/描述符应用.py", line 29,in__init__self.age=age File"D:/pythonproject/work/venv/myplan/day28/描述符应用.py", l...
如果一个对象定义了__get__() 和 __set__(),它被认为是一个数据描述符.只定义 __get__()被认为是非数据描述符,数据和非数据描述符的区别在于:如果一个实例的字典有和数据描述符同名的属性,那么数据描述符会被优先使用,如果一个实例的字典实现了无数据描述符的定义,那么这个字典中的属性...
set方法 File "F:/Python3/老男孩/面向对象/day4/描述符应用.py", line 60, in <module> p2 = People(321,18,330) File "F:/Python3/老男孩/面向对象/day4/描述符应用.py", line 29, in __init__ self.name = name File "F:/Python3/老男孩/面向对象/day4/描述符应用.py", line 18, in ...
* TCP_NODELAY set * Connected to 127.0.0.1 (127.0.0.1) port 5000 (#0) > POST /request?a=1&b=2 HTTP/1.1 > Host: 127.0.0.1:5000 > User-Agent: curl/7.64.1 > Accept: */* > Content-Length: 7 > Content-Type: application/x-www-form-urlencoded > } [7 bytes data] * upload ...
Start using Python To begin using Python in Excel, select a cell and on theFormulastab, selectInsert Python. This tells Excel that you want to write a Python formula in the selected cell. Or use the function=PYin a cell to enable Python. After entering=PYin the cell, choose PY from the...
*/ virtual int MFSeek( long offset, int origin ) = 0; // int fsetpos ( FILE * stream, const fpos_t * pos ); // Restores the current position in the stream to pos. /* The internal file position indicator associated with stream is set to the position represented by pos, which is...
今天给大家准备了60个Python日常高频写法,如果觉得有用,那就点赞收藏起来吧～ 一、 数字 1 求绝对值 绝对值或复数的模 In [1]: abs(-6) Out[1]: 6 2 进制转化 十进制转换为二进制: In [2]: bin(10) Out[2]: '0b1010' 十进制转换为八进制: ...
easy to handle. I most especially love how I get error messages and also a prompt as to where the error occured. I have always loved coding in python and one library I use a lot when working on projects is the Seaborn library. For me, it just gives a different feel to my ...
Nsight Systems Command Line Feature Spotlight Watch (1:38) Analyzing NCCL Usage with NVIDIA Nsight Systems Watch (1:58) Nsight Systems Feature Spotlight: OpenMP Watch (1:19) Nsight Systems - Vulkan Trace Watch (1:28) Support To provide feedback, request additional features, or report support ...