issue in install tensorflow

Question

when I use pip install tensorflow command that error appear :- ''' ERROR: pip's dependency resolver does not currently take into account all the packages that are installed. This behaviour is the source of the following dependency conflicts. tf-nightly 2.6.0.dev20210601 requires gast==0.4.0, but you have gast 0.3.3 which is incompatible. tf-nightly 2.6.0.dev20210601 requires h5py~=3.1.0, but you have h5py 2.10.0 which is incompatible. tf-nightly 2.6.0.dev20210601 requires numpy~=1.19.2, but you have numpy 1.18.5 which is incompatible.'''

Answer 1

Looks like you are trying to install Tensorflow and tf-nightly on the same environment. Since Tensorflow and tf-nightly uses same code, you should never install both in same environment. Latest version overrides the most of the packages, thats how pip works. It recommended to use virtual environment each tensorflow version.
Tf-nightly require gast==0.4.0 and numpy==1.19.2.

Follow the below steps

python -m tf_nightly --system-site-packages .\venv
.\venv\Scripts\activate
pip install --upgrade pip
pip install tf-nightly