I have been before in anaconda3 environment has a python3 environmental installation, because now some of the demand, to install python2 environment
1. Open the anaconda anaconda prompt to view the current environment:
. 1 Conda info -e (or --envs)
2, create a file called py27 new environment, and specify the operating environment for python2.7
conda create -n py27 python = 2.7 or the Create Conda --name py27 Python 2.7 = # delete conda remove -n py27 (that is the name of your virtual environment created) --all
3, created py27 context activation, the installation dependencies require activation in the current environment
# Win activation of an activate py27 # win quit deactivate
4, python version check under the new environment as well as automatically when you create the environment conda those packages must be installed
# View python version python - Version # View installed those packages Conda List # or conda list -n python27
5, the software needs to be installed into the environment under the installation package, create operating only install the necessary pkg, such as python, pip and so on, basically no other third-party libraries, if you need to install anaconda collection, you can:
# In the current environment, installation package conda install the package name # install anaconda package in the current environment collection conda install anaconda # combine command to create the environment, the above operations can be combined into conda create -n python27 python = 2.7 anaconda
6, the package file import requirements.txt
# In the file directory operations pip install -r requirements.txt