Python 如何设置数据帧子集的样式?
我之前问过,我给出的玩具问题得到了完美的答案 原来我应该把玩具的问题和我真正的问题更接近一点。考虑一个数据栏超过1列的文本数据,我可以将其应用到: 作为pd进口熊猫 将numpy作为np导入 导入seaborn作为sns cm=sns。发散调色板-5,5,如cmap=真 df=pd.DataFramenp.random.randn3,4 df['text_column']='a' df['second_text_column']='b' df.style.background_gradientcmap=cm 但是,与上一个问题一样,我只希望将此样式应用于最后一行。对上一个问题的答复是: df.style.background_gradientcmap=cm,subset=df.index[-1] 在这种情况下,会出现以下错误:Python 如何设置数据帧子集的样式?,python,pandas,dataframe,Python,Pandas,Dataframe,我之前问过,我给出的玩具问题得到了完美的答案 原来我应该把玩具的问题和我真正的问题更接近一点。考虑一个数据栏超过1列的文本数据,我可以将其应用到: 作为pd进口熊猫 将numpy作为np导入 导入seaborn作为sns cm=sns。发散调色板-5,5,如cmap=真 df=pd.DataFramenp.random.randn3,4 df['text_column']='a' df['second_text_column']='b' df.style.background_gradientc
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TypeError Traceback (most recent call last)
/usr/local/miniconda/lib/python3.7/site-packages/IPython/core/formatters.py in __call__(self, obj)
343 method = get_real_method(obj, self.print_method)
344 if method is not None:
--> 345 return method()
346 return None
347 else:
/usr/local/miniconda/lib/python3.7/site-packages/pandas/io/formats/style.py in _repr_html_(self)
161 Hooks into Jupyter notebook rich display system.
162 """
--> 163 return self.render()
164
165 @Appender(_shared_docs['to_excel'] % dict(
/usr/local/miniconda/lib/python3.7/site-packages/pandas/io/formats/style.py in render(self, **kwargs)
457 * table_attributes
458 """
--> 459 self._compute()
460 # TODO: namespace all the pandas keys
461 d = self._translate()
/usr/local/miniconda/lib/python3.7/site-packages/pandas/io/formats/style.py in _compute(self)
527 r = self
528 for func, args, kwargs in self._todo:
--> 529 r = func(self)(*args, **kwargs)
530 return r
531
/usr/local/miniconda/lib/python3.7/site-packages/pandas/io/formats/style.py in _apply(self, func, axis, subset, **kwargs)
536 if axis is not None:
537 result = data.apply(func, axis=axis,
--> 538 result_type='expand', **kwargs)
539 result.columns = data.columns
540 else:
/usr/local/miniconda/lib/python3.7/site-packages/pandas/core/frame.py in apply(self, func, axis, broadcast, raw, reduce, result_type, args, **kwds)
6485 args=args,
6486 kwds=kwds)
-> 6487 return op.get_result()
6488
6489 def applymap(self, func):
/usr/local/miniconda/lib/python3.7/site-packages/pandas/core/apply.py in get_result(self)
149 return self.apply_raw()
150
--> 151 return self.apply_standard()
152
153 def apply_empty_result(self):
/usr/local/miniconda/lib/python3.7/site-packages/pandas/core/apply.py in apply_standard(self)
255
256 # compute the result using the series generator
--> 257 self.apply_series_generator()
258
259 # wrap results
/usr/local/miniconda/lib/python3.7/site-packages/pandas/core/apply.py in apply_series_generator(self)
284 try:
285 for i, v in enumerate(series_gen):
--> 286 results[i] = self.f(v)
287 keys.append(v.name)
288 except Exception as e:
/usr/local/miniconda/lib/python3.7/site-packages/pandas/core/apply.py in f(x)
76
77 def f(x):
---> 78 return func(x, *args, **kwds)
79 else:
80 f = func
/usr/local/miniconda/lib/python3.7/site-packages/pandas/io/formats/style.py in _background_gradient(s, cmap, low, high, text_color_threshold)
941 smin = s.values.min()
942 smax = s.values.max()
--> 943 rng = smax - smin
944 # extend lower / upper bounds, compresses color range
945 norm = colors.Normalize(smin - (rng * low), smax + (rng * high))
TypeError: ("unsupported operand type(s) for -: 'str' and 'str'", 'occurred at index text_column')
<pandas.io.formats.style.Styler at 0x7f948dde7278>
对子集使用元组对我来说很有效,但不确定它是否是最优雅的解决方案:
df.style.background_gradient(cmap=cm,
subset=(df.index[-1], df.select_dtypes(float).columns))
输出:
虽然我没有收到相同的错误,但感谢您为复制提供了必要的代码。你的python版本是什么?python 3.7.3版本0.24.2适合我!非常感谢你!这一整天都让我发疯:
df.style.background_gradient(cmap=cm,
subset=(df.index[-1], df.select_dtypes(float).columns))