如何在DataFrame上将`style`与`to_html`类结合使用? [英] How to use `style` in conjunction with the `to_html` classes on a DataFrame?

问题描述

我有一个类似

df = pd.DataFrame(np.random.randn(10).reshape(2, 5))

df
#              0         1         2         3         4
#    0 -0.067162 -0.505401 -0.019208  1.123936  0.087682
#    1 -0.373212 -0.598412  0.185211  0.736143 -0.469111

我正在尝试将此DataFrame输出为HTML，并且以前使用

I am trying to output this DataFrame as HTML, and was previously using to_html like

df.to_html(classes=['table', 'table-hover', 'table-bordered'], 
           float_format=lambda x: '{0:.3f}s'.format(x))

但是后来我遇到了样式功能，并认为在我的DataFrame中为float设置样式器会很好.喜欢

But then I came across the Style feature, and thought that it would be nice to have a styler for the floats in my DataFrame. Like

def colorize(num)
    color = 'red' if (np.isnan(num) or num > 0) else 'green'
    return 'color: %s' % color

我可以使用

df_styler = df.Style.applymap(colorize)

但是现在df_styler是 Styler 对象，尽管它具有render方法，但我看不到如何传递与to_html一起使用的classes列表或float格式化程序...

But now df_styler is a Styler object, and though it has a render method, I don't see how I can pass the classes list or float formatter which I was using with to_html anymore...

有没有一种方法可以结合使用Style函数和to_html中的CSS类/格式化程序?

Is there a way that I can combine using Style functions and the CSS classes / formatters found in to_html?

推荐答案

尝试一下:

html = df.style.applymap(colorize) \
         .set_table_attributes('border="1" class="dataframe table table-hover table-bordered"') \
         .set_precision(3) \
         .render()

with open('d:/temp/a2.html', 'w') as f:
    f.write(html)

结果:

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