html html5,HTML5 Doctor

One of the many new input types that HTML5 introduced is the date input type which, in theory, should allow a developer to provide the user with a simple, usable, recognisable method of entering a date on a web page. But sadly, this input type has yet to reach its full potential. Briefly, the date […]

ARIA is an amazing technology, it allows developers to add meaning to meaningless HTML or override meaning on HTML that is being repurposed and sometimes misused, so that users who rely upon the meaning of HTML, as implemented in browsers, can understand and interact with HTML User Interfaces successfully.

Updated: 3rd August 2020 The question of whether HTML elements need the addition of ARIA role attributes to expose their semantics, is one that surfaces on a regular basis. The answer is maybe for a subset of elements, but increasingly no.

The W3C’s Mike[tm] Smith (AKA @sideshowbarker) is the man with his head in the W3C validation markup checking tool source code; he makes the magic happen.  Questions were asked for the HTML5 Doctor reader’s delight and edification. Russian Translation: Не проверив HTML5-кода, не суйся в воду — с Майком™ Смитом First off tell us a bit about what you do and […]

Forwards In recent weeks I contacted around 40 people, a cross section of those who have banged away at, or banged on about, HTML5. I asked them for their perspectives on HTML5 becoming a W3C Recommendation. Below are the words of the 28 people who responded, pretty much in the order they hit my inbox: […]

By Marcos Cáceres and Bruce Lawson. Update 26 September 2014 The initial work for Manifest in Chromium M39 is done, and Marcos (more or less) finished coding the processor a few months ago. “I’m hoping to see it in fxos 2.2“, he said from the pool of his gorgeous Malibu home.) Update 11 November 2014 […]

ARIA (WAI-ARIA if you want to be formal) is a set of attributes that you can add to HTML elements. These attributes communicate role, state and property semantics to assistive technologies via the accessibility APIs implemented in browsers. The W3C HTML specification provides information about which ARIA attributes are allowed to be used on each […]

It’s nearly two years since I suggested a element as a strawman proposal as a way to solve the problem of responsive images, so let’s have a look at how we’re doing.

出现这个错误的原因是在导入seaborn包时,无法从typing模块中导入名为'Protocol'的对象。 解决这个问题的方法有以下几种: 1. 检查你的Python版本是否符合seaborn包的要求,如果不符合,尝试更新Python版本。 2. 检查你的环境中是否安装了typing_extensions包,如果没有安装,可以使用以下命令安装:pip install typing_extensions。 3. 如果你使用的是Python 3.8版本以下的版本,你可以尝试使用typing_extensions包来代替typing模块来解决该问题。 4. 检查你的代码是否正确导入了seaborn包,并且没有其他导入错误。 5. 如果以上方法都无法解决问题,可以尝试在你的代码中使用其他的可替代包或者更新seaborn包的版本来解决该问题。 总结: 出现ImportError: cannot import name 'Protocol' from 'typing'错误的原因可能是由于Python版本不兼容、缺少typing_extensions包或者导入错误等原因造成的。可以根据具体情况尝试上述方法来解决该问题。<span class="em">1</span><span class="em">2</span><span class="em">3</span> #### 引用[.reference_title] - *1* *2* *3* [ImportError: cannot import name ‘Literal‘ from ‘typing‘ (D:\Anaconda\envs\tensorflow\lib\typing....](https://blog.youkuaiyun.com/yuhaix/article/details/124528628)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v93^chatsearchT3_2"}}] [.reference_item style="max-width: 100%"] [ .reference_list ]
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