check tensorflow version

1import tensorflow as tf
2tf.__version__

1######## for Python 2.7
2pip install --upgrade pip
3pip install --upgrade tensorflow
4
5######## for Python 3.n
6pip3 install --upgrade pip
7pip3 install --upgrade tensorflow

1python3
2import tensorflow as tf
3tf.__version__

1python -c 'import tensorflow as tf; print(tf.__version__)'  # for Python 2 on linux
2python3 -c 'import tensorflow as tf; print(tf.__version__)'  # for Python 3 on linux

1import tensorflow as tf 
2print(tf.__version__)

1python -c 'import tensorflow as tf; print(tf.__version__)'  # for Python 2
2python3 -c 'import tensorflow as tf; print(tf.__version__)'  # for Python 3
3