python中有几千行错误

Question

我不知道这是什么意思时，蟒蛇错误打印line 1500 in __getitem__或line 1913, in _getitem_axis-在从这些线？

例如，

Traceback (most recent call last):
  File "script.py", line 6, in <module>
    us = df.loc['origin' == 'US']
  File "script.py", line 1500, in __getitem__
    return self._getitem_axis(maybe_callable, axis=axis)
  File "script.py", line 1913, in _getitem_axis
    return self._get_label(key, axis=axis)
  File "script.py", line 141, in _get_label
    return self.obj._xs(label, axis=axis)
  File "script.py", line 3575, in xs
    loc = self.index.get_loc(key)
  File "script.py", line 2604, in get_loc
    return self._engine.get_loc(self._maybe_cast_indexer(key))
  File "script.py", line 108, in pandas._libs.index.IndexEngine.get_loc
  File "script.py", line 129, in pandas._libs.index.IndexEngine.get_loc
  File "script.py", line 91, in pandas._libs.index.Int64Engine._check_type
KeyError: False

PS感谢您使用人工语言或通过类比/示例进行解释。

Answer 1

这些功能是Python内置支持的一部分；许多例程很长，或者是长模块中的一个函数。点是命名约定的一部分：包，模块，子模块，...函数。例如

pandas._libs.index.IndexEngine.get_loc

get_loc 是PANDAS数据框软件包中的基本位置检索功能。