自从我将 pandas 升级到 0.23.0 以来,我在运行一行删除空格时收到此错误
df.any_column = df.any_column.str.replace(' ','')
我收到的错误消息如下:
/usr/local/lib/python3.5/dist-packages/pandas/core/strings.py in replace(self, pat, repl, n, case, flags, regex)
2427 def replace(self, pat, repl, n=-1, case=None, flags=0, regex=True):
2428 result = str_replace(self._data, pat, repl, n=n, case=case,
-> 2429 flags=flags, regex=regex)
2430 return self._wrap_result(result)
2431
/usr/local/lib/python3.5/dist-packages/pandas/core/strings.py in str_replace(arr, pat, repl, n, case, flags, regex)
637 raise TypeError("repl must be a string or callable")
638
--> 639 is_compiled_re = is_re(pat)
640 if regex:
641 if is_compiled_re:
/usr/local/lib/python3.5/dist-packages/pandas/core/dtypes/inference.py in is_re(obj)
217 """
218
--> 219 return isinstance(obj, re_type)
220
221
/usr/lib/python3.5/typing.py in __instancecheck__(self, obj)
258
259 def __instancecheck__(self, obj):
--> 260 raise TypeError("Type aliases cannot be used with isinstance().")
261
262 def __subclasscheck__(self, cls):
TypeError: Type aliases cannot be used with isinstance().
我该如何解决这个问题?
这是 Python 3.5.2 及更低版本中的一个错误。要么升级你的Python(像3.5.4或更新的版本应该可以工作),要么等到下一个pandas版本,其中包括修复:https://github.com/pandas-dev/pandas/pull/21098