当你想要在conda指定的某个环境中安装包的方法

1）使用conda install -n 环境名 包名

userdeMBP:pytorch user$ conda install -n deeplearning2 tensorflow

2)进入环境，在环境中使用pip install命令：

userdeMacBook-Pro:classifier cifar user$ conda activate deeplearning
(deeplearning) userdeMacBook-Pro:classifier cifar user$ pip install tensorflow
Collecting tensorflow
...

 然后查看：

(deeplearning) userdeMBP:~ user$ python
Python 3.7.2 (default, Dec 29 2018, 00:00:04) 
[Clang 4.0.1 (tags/RELEASE_401/final)] :: Anaconda, Inc. on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import tensorflow
>>> tensorflow.__version__
'1.13.1'
>>> 

可见安装了1.13.1版本的tensorflow

3.使用anaconda navigator安装，详情可见jupyter notebook中No module named 'tensorflow'