如何修复错误属性错误：'Series'对象没有属性"更快"？

Question

这很直接，我试图复制Swifter页面中使用的示例https://github.com/jmcarpenter2/swifter.但是，我一直得到错误AttributeError:"Series"对象没有属性"swifter"。怎么了？

更新-我尝试过的例子：

import pandas as pd
import swifter 
df = pd.DataFrame({'x': [1, 2, 3, 4], 'y': [5, 6, 7, 8]})
# runs on single core
df['x2'] = df['x'].apply(lambda x: x**2)
# runs on multiple cores
df['x2'] = df['x'].swifter.apply(lambda x: x**2)
# use swifter apply on whole dataframe
df['agg'] = df.swifter.apply(lambda x: x.sum() - x.min())
# use swifter apply on specific columns
df['outCol'] = df[['inCol1', 'inCol2']].swifter.apply(my_func)
df['outCol'] = df[['inCol1', 'inCol2', 'inCol3']].swifter.apply(my_func,
positional_arg, keyword_arg=keyword_argval)

Answer 1

我遇到了同样的问题，并像这样解决了它：

from swifter import swifter