About the difference python version 2.7 or 3.7 of the class is not great
2.7 Stop Maintenance Update 2020
Do a little test, how performance will be enough light it? , We have a good line and line and the code
Step by step we started to take the environment: (Windows)
① First will use jdk, usually jdk1.8 it, click on the installation, the default location in the C: \ Program Files \ Java
Configuration environment variable, own Baidu, very simple
② in Python official website to download Python2.7
Official website: https://www.Python.org/
Once you have downloaded, double-click on it to install, the default location C: \ Python27
After installation, add in the environment variable Path:; C: \ Python27
③ install setuptools
Download the official website: https://pypi.python.org/pypi/setuptools
Find setup.py file folder
Open cmd: cd enter the directory
setup.py install
④ installation pip
There pip directory in Python folder: C: \ Python27 \ Scripts (back to the root directory command cd \)
Input: python pip.exe
⑤ install selenium
pip install selenium
Here it prompts me pip version is too low. According to his update python -m pip install --upgrade pip
(Update and do not update will not affect)