python beautifulsoup new_tag:将类分配为属性 [英] python beautifulsoup new_tag: assign class as an attribute

问题描述

我是python和beautifulsoup的新手，所以也许我找不到一个简单的答案.

I'm new to both python and beautifulsoup, so maybe there is a simple answer I can't find.

当我呼叫.new_tag('name')时，我还可以分配诸如.new_tag('a', href='#', id='link1')

When I call .new_tag('name') I also can assign attributes like .new_tag('a', href='#', id='link1')

但是我不能以这种方式分配类，因为它是保留字.同样，我也不能以这种方式添加名称，因为它被用作标签名称属性的关键字.我知道以后可以添加它们，例如使用tag['class']，但是我想知道，这是将类添加到新标签的唯一方法吗?还是有一个步骤可以做到这一点?

But I can't assign class this way, because it is reserved word. Also I can't add name this way, because it's used as keyword for the tag name attribute. I know I can add them later, using tag['class'] for example, but I would like to know, is this the only way to add class to new tag? Or there is a way to do that with a single step?

推荐答案

您是对的-class是python保留的单词，由于语言解析器会抱怨，因此不能用作关键字参数.

You are right - class is a python reserved word and cannot be used as a keyword argument because the language parser complains.

有一种解决方法-您可以通过以**开头的字典为function关键字参数赋值. 这样，类"只是另一个字符串，在解析python语法时不会与保留字冲突，但是关键字参数会在运行时正确传递.

There's a way around this - you can give the function keyword arguments through a dictionary preceded by **. That way "class" is just another string and wont collide with the reserved word when the python syntax is parsed, but the keyword argument gets passed correctly at runtime.

您的解决方法应为-

soup.new_tag('a', href='#', id='link1', **{'class':'classname'})

我知道有些丑陋，但它可以工作..;)

Kind of ugly I know but it works.. ;)

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