str(add)]) return code print(v_code())二.日志模块1.工作日志分四大类:系统日志:记录服务器的一些重要信息:监控系统,cpu温度,网卡流量,重要的硬件指标网站日志:访问异常,卡顿,访问量,点击率,蜘蛛爬取次数辅助开发日志:开发人员在开发项目中,利用日志进行排错,排除一些避免不了的错误(记录),辅助开发记录
""" def add(self, *args, **kwargs): # real signature unknown """ Add an element to a set,添加元素 This has no effect if the element is already present. """ pass def clear(self, *args, **kwargs): # real signature unknown """ Remove all elements from this set. 清除内容"""...
| Remove and return an arbitrary set element. | Raises KeyError if the set is empty. | | remove(...) | Remove an element from a set; it must be a member. | | If the element is not a member, raise a KeyError. | | symmetric_difference(...) | Return the symmetric difference of...
primitive_operation2() print("执行步骤3") # 具体子类实现 class ConcreteClass1(AbstractClass): def primitive_operation1(self): print("具体操作1-A的实现") def primitive_operation2(self): print("具体操作2-A的实现") # 使用模板方法 if __name__ == "__main__": concrete = ConcreteClass1(...
chrome_options.add_argument('--headless'): 设置无头浏览器 selenium页面加载等待和检测 使用selenium打开页面以后,还不能立刻操作,需要等到待处理页面元素加载完成,这时就需要检测和等待页面元素加载。 使用time.sleep()等待 最简单的方法就是打开页面以后,使用time.sleep()强制等待一定时间,该方法只能设置一个固定时...
set(iterable) -> new set object Build an unordered collection of unique elements. """ def add(self, *args, **kwargs): # real signature unknown """ Add an element to a set,添加元素 This has no effect if the element is already present. ...
Python语言采用严格的缩进来表示程序逻辑。也就是我们所说的Python程序间的包含与层次关系。一般代码不要求缩进,顶行编写且不留空白。在if、while、for、def、class等保留字所在完整语句后通过英文的“:”结尾并在之后行进行缩进,表明后续代码与紧邻无缩进语句的所属关系。
1.add(self, *args, **kwargs) (只能更新一个值) Add an element to a set. element [ˈelɪmənt] 元素 This has no effect if the element is already present. effect [ɪˈfekt] 影响 添加一个元素到集合里面,如果这个元素已经有了,不影响 ...
If you installed Pyenv via Git checkout, we recommend to set it to the same location as where you cloned it. Add the pyenv executable to your PATH if it's not already there run eval "$(pyenv init -)" to install pyenv into your shell as a shell function, enable shims and auto...
set logicalong the other axes.Can also add a layer of hierarchical indexing on the concatenation axis,which may be useful if the labels are the same (or overlapping) onthe passed axis number.Parameters---objs : a sequence or mapping of Series or DataFrame objectsIf a mapping is passed, th...