小编joi*_*egn的帖子

我可能会反击桌面,因为它显而易见,但是如何从字符向量以编程方式创建列表,以便字符向量提供标记,而另一个向量提供值.例如

character.vector <- c('first.element', 'second.element')
values.vector <- c(1, 2)
a.list <- list(//magic here//)
print(a.list) // prints the same as list(first.element=1, second.element=2)

我确定有一种从模块名称获取模块路径的简单方法,对吧？即我想从path.to.module中检索/ path/to/module,最好是在python 2.7中.

我不打算导入模块,我将模块名称作为字符串.

我遇到了 Pandas 的以下问题，并且无法识别出任何错误。

churned_or_dormant_customers_by_month = jobs_by_customer_and_month.fillna(0).rolling(2, 2, axis='columns').apply(lambda window: 1 if not window[1] and window[0] else 0).sum(skipna=True)

上面给出了以下回溯：

Traceback (most recent call last):
  File "<console>", line 1, in <module>
  File "/usr/lib/python3.8/site-packages/pandas/core/window/rolling.py", line 2059, in apply
    return super().apply(
  File "/usr/lib/python3.8/site-packages/pandas/core/window/rolling.py", line 1388, in apply
    return self._apply(
  File "/usr/lib/python3.8/site-packages/pandas/core/window/rolling.py", line 586, in _apply
    result = np.apply_along_axis(calc, self.axis, values)
  File "<__array_function__ internals>", line 5, in apply_along_axis
  File "/usr/lib/python3.8/site-packages/numpy/lib/shape_base.py", line 379, in apply_along_axis
    res = asanyarray(func1d(inarr_view[ind0], *args, **kwargs))
  File "/usr/lib/python3.8/site-packages/pandas/core/window/rolling.py", line 576, in calc …