After Anaconda upgrade to 0.25.3 can't import pandas

[boardtc]

Code Sample, a copy-pastable example if possible

conda update pandas

Problem description

I did a conda update pandas at the anaconda prompt today to update from 0.23.x to 0.25.3 and now I get this error in Spyder simply importing pandas.

Traceback (most recent call last):

  File "<ipython-input-4-7dd3504c366f>", line 1, in <module>
    import pandas as pd

  File "D:\Applications\Anaconda3\lib\site-packages\pandas\__init__.py", line 55, in <module>
    from pandas.core.api import (

  File "D:\Applications\Anaconda3\lib\site-packages\pandas\core\api.py", line 5, in <module>
    from pandas.core.arrays.integer import (

  File "D:\Applications\Anaconda3\lib\site-packages\pandas\core\arrays\__init__.py", line 7, in <module>
    from .categorical import Categorical  # noqa: F401

  File "D:\Applications\Anaconda3\lib\site-packages\pandas\core\arrays\categorical.py", line 54, in <module>
    from pandas.core.base import NoNewAttributesMixin, PandasObject, _shared_docs

  File "D:\Applications\Anaconda3\lib\site-packages\pandas\core\base.py", line 36, in <module>
    import pandas.core.nanops as nanops

  File "D:\Applications\Anaconda3\lib\site-packages\pandas\core\nanops.py", line 38, in <module>
    bn = import_optional_dependency("bottleneck", raise_on_missing=False, on_version="warn")

  File "D:\Applications\Anaconda3\lib\site-packages\pandas\compat\_optional.py", line 99, in import_optional_dependency
    version = _get_version(module)

  File "D:\Applications\Anaconda3\lib\site-packages\pandas\compat\_optional.py", line 48, in _get_version
    raise ImportError("Can't determine version for {}".format(module.__name__))

ImportError: Can't determine version for bottleneck

29181 is similar but the iPython was already installed as part of Anaconda,

Expected Output

None. Should be able to import pandas as pd

Output of pd.show_versions()

Traceback (most recent call last):

File "", line 1, in
pd.show_versions()

NameError: name 'pd' is not defined

[boardtc]

Fixed by a conda update --all,
I will open an issues against Anaconda

[vikalpjain91]

Any update on this? I am still facing the same issue.

[cris-bytes]

Realized I wasn't running python but ipython, probably with an old version.
conda install ipython solved this problem for me.