Python imports packages not present in environment [duplicate]

Question

After having uninstalled and removed tensorflow, the package is no longer present in the current environment's conda/pip package list. Neither are there any associated files present in the current directory. How then, is it possible to import the tensorflow package without a ModuleNotFoundError ? Strangely, the module can be imported but it is not possible to print its version. What is the explanation for this in python?

Package not found:

(base) $ which python
/Users/foobar/miniforge3/bin/python
(base) $ pip show tensorflow
WARNING: Package(s) not found: tensorflow
(base) $ conda env list
# conda environments:
#
base                  *  /Users/foobar/miniforge3

(base) $ conda list tensorflow --full-name
# packages in environment at /Users/foobar/miniforge3:
#
# Name                    Version                   Build  Channel

Package not in module list:

(base) $ python3  
    Python 3.9.10 | packaged by conda-forge | (main, Feb  1 2022, 21:27:43) 
    [Clang 11.1.0 ] on darwin
    Type "help", "copyright", "credits" or "license" for more information.
    >>> help("modules")

Package is able to be imported even though it is not in module list:

    >>> import tensorflow as tf
    >>> tf.__version__
    Traceback (most recent call last):
      File "<stdin>", line 1, in <module>
    AttributeError: module 'tensorflow' has no attribute '__version__'