import seaborn as sns
import missingno as msno
import matplotlib.pylab as plt
from sklearn.impute import SimpleImputer
titanic = sns.load_dataset("titanic")
imputer_embark_town = SimpleImputer(strategy="most_frequent")
imputer_age = SimpleImputer(strategy="median")
titanic["embark_town"] = imputer_embark_town.fit_transform(titanic[["embark_town"]])
titanic["age"] = imputer_embark_town.fit_transform(titanic[["age"]])
in this code,
titanic["embark_town"] = imputer_embark_town.fit_transform(titanic[["embark_town"]])
line throw an error, but next line is no problem.
Error Massage
File ~\AppData\Local\Programs\Python\Python310\lib\site-packages\spyder_kernels\py3compat.py:356 in compat_exec
exec(code, globals, locals)
File c:\users\lg\.spyder-py3\temp.py:11
titanic["embark_town"] = imputer_embark_town.fit_transform(titanic[["embark_town"]])
File ~\AppData\Local\Programs\Python\Python310\lib\site-packages\pandas\core\frame.py:3950 in __setitem__
self._set_item(key, value)
File ~\AppData\Local\Programs\Python\Python310\lib\site-packages\pandas\core\frame.py:4143 in _set_item
value = self._sanitize_column(value)
File ~\AppData\Local\Programs\Python\Python310\lib\site-packages\pandas\core\frame.py:4871 in _sanitize_column
return sanitize_array(value, self.index, copy=True, allow_2d=True)
File ~\AppData\Local\Programs\Python\Python310\lib\site-packages\pandas\core\construction.py:569 in sanitize_array
subarr = maybe_infer_to_datetimelike(data)
File ~\AppData\Local\Programs\Python\Python310\lib\site-packages\pandas\core\dtypes\cast.py:1196 in maybe_infer_to_datetimelike
raise ValueError(value.ndim) # pragma: no cover
ValueError: 2
If I change the line using .ravel() method, No Error.
import seaborn as sns
import missingno as msno
import matplotlib.pylab as plt
from sklearn.impute import SimpleImputer
titanic = sns.load_dataset("titanic")
imputer_embark_town = SimpleImputer(strategy="most_frequent")
imputer_age = SimpleImputer(strategy="median")
titanic["embark_town"] = imputer_embark_town.fit_transform(titanic[["embark_town"]]) .ravel()
titanic["age"] = imputer_embark_town.fit_transform(titanic[["age"]])
What's difference between two lines?
titanic["embark_town"] = imputer_embark_town.fit_transform(titanic[["embark_town"]])
titanic["age"] = imputer_embark_town.fit_transform(titanic[["age"]])
I think the first and second lines of the code are structurally the same, so why does only the first line produce an error?
