Of course, seasoned Python programmers are wise and systematic, and generally do not use this freedom to create and delete attributes arbitrarily.
当然，经验丰富的Python程序员是非常明智和有条理的，一般不会使用这种自由来任意创建和删除属性。
Those attributes are not static, so you can add and delete them at will.
这些属性不是静态的，因此可以随意添加和删除它们。
Applications can add new objects to the graph, delete objects from the graph, and modify attributes of objects.
应用程序可以将新的对象添加到图形中，从图形中删除对象并修改对象的属性。
For example, programmers can add new nodes, delete nodes, update the values of elements or attributes, and make other types of updates.
例如，程序员可以添加新节点、删除节点、更新元素或属性的值，以及进行其他类型的更新。
This policy defines the rule to delete the files from the system depending on various file attributes like access time, modified time, file name, path, owner, and so on.
该策略定义了从系统中删除文件的规则，可根据访问时间、修改时间、文件名、路径、所有者等文件属性对系统中的文件进行删除。
Project administrators can add, modify, and delete requirement attributes.
项目管理人员可以添加，修改，以及删除需求属性。
It is as easy to generate XML files on the fly, and to add and delete elements and their attributes.
同样，在运行中生成xml文件，添加和删除元素及它们的属性也很简单。
Create, edit, and delete custom attributes.
创建、编辑和删除定制属性。
Next, you see where ChompQ.pl has queried the queue attributes and calculated the number of messages to delete (Listing 20).
下面，您查看ChompQ . pl在哪里查询队列属性并计算需要删除的消息的数量(见清单20)。
The instance view lets you create a new instance, add and delete elements and attributes, change element and attribute names, move element and attribute nodes, rename them, and assign values to them.
Instance视图允许创建新实例，增加和删除元素或属性，改变元素和属性名，删除元素和属性节点，重命名和为其赋值。
Similarly, to delete elements and attributes, use the delete_element and delete_attribute methods of the elements object.
类似地，要删除元素和属性，使用Elements对象的delete_element和delete_attribute方法。
Main functions: document creation, document writing, reading documents, documents, delete files, rename files, querying document attributes, Close document.
主要功能：建立文件、写文件、读文件、显示文件、删除文件、重命名文件、查询文件属性、关闭文件。
However, when removing collections of elements or attributes, you should first materialize a collection into a list, and then delete the elements or attributes from the list.
但是，若要移除多个元素或属性的集合，则应首先将一个集合具体化为一个列表，然后从该列表中删除相应元素或属性。
However, when removing collections of elements or attributes, you should first materialize a collection into a list, and then delete the elements or attributes from the list.
但是，若要移除多个元素或属性的集合，则应首先将一个集合具体化为一个列表，然后从该列表中删除相应元素或属性。
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