from google.colab import drive
drive.mount('/content/drive')
2.进入到自己的文件夹下：
在colab中，直接这样做就可以
cd 想要进入的文件夹名字/3.安装Anaconda来配置需要的安装包：
!wget -c https://repo.continuum.io/archive/Anaconda3-5.1.0-Linux-x86_64.sh
!chmod +x Anaconda3-5.1.0-Linux-x86_64.sh
!bash ./Anaconda3-5.1.0-Linux-x86_64.sh -b -f -p /usr/local
import sys
sys.path.append('/usr/local/lib/python3.6/site-packages/')
4.Linux下Anaconda的虚拟环境创建、激活
虚拟环境创建：
!conda create -n 虚拟环境名称 python=3.7
激活虚拟环境：
!source cnonda activate 虚拟环境
虚拟环境被激活之后，就不用进行其他的操作了，激活了虚拟环境后，想要运行的python文件就会在这个虚拟环境下运行
安装各种依赖库时常会出现的错误有三个：
（1）Command "python setup.py egg_info" failed with error code 1 in /tmp/pip-build-nr4ydx_8/opencv-python/
!pip install --upgrade setuptools
（2）Command "python setup.py egg_info" failed with error code 1 in /tmp/pip-build-ud_idlo6/opencv-python/
!python -m pip install --upgrade pip
（3）ERROR: Cannot uninstall 'PyYAML'. It is a distutils installed project and thus we cannot accurately determine which files belong to it which would lead to only a partial uninstall.
pip install PyYAML --ignore-installed
