Multi-version switching python
Download the Python installation package from the official website: https://www.python.org/downloads/mac-osx/
Mac os comes with python, but I remember it was the python2.7 version
Avoid using too new versions when choosing to install packages.
Configure the environment:
$vi ~ / .bash_profile
Add the following configuration
# python Set
# Setting PATH for Python 2.7
# The original version is saved in .bash _ profile.pysave
PATH= "/ Library/Frameworks/Python.framework/Versions/2.7/bin:$ {PATH}"
Export PATH
# Setting PATH for Python 3.3
# The original version is saved in .bash _ profile.pysave
PATH= "/ Library/Frameworks/Python.framework/Versions/3.3/bin:$ {PATH}"
Export PATH
Exit after saving
Configure bashrc
$vi ~ / .bashrc
Add the following configuration:
# python alias definition
Alias python2='/Library/Frameworks/Python.framework/Versions/2.7/bin/python2.7'
Alias python3='/Library/Frameworks/Python.framework/Versions/3.3/bin/python3.3'
Alias python=python3
The environment takes effect:
$source ~ / .bash_profile
$source ~ / .bashrc
View the current python version
$python-V
Python 3.3.5
Switch version
Modify the last line
Change alias python=python3 to alias python=python2
Again $python-V
Python 2.7.11rc1
Installation paths for different versions:
The Mac system comes with Python2.7, and when we install Python3, we can install it through the brew command or pkg on the official website. After installation, their file saving paths are as follows:
Source python installation path
System default / System/Library/Frameworks/Python.framework/Versions/2.7
Brew installation / usr/local/Cellar/python
Official website pkg installation / Library/Frameworks/Python.framework/Versions/2.7
Python version:
Status of Python branches
Branch
Schedule
Status
First release
End-of-life
Release manager
Master
PEP 569
Features
2019-10-20
2024-10
"ukasz Langa
3.7
PEP 537
Bugfix
2018-06-27
2023-06-27
Ned Deily
3.6
PEP 494
Security
2016-12-23
2021-12-23
Ned Deily
2.7
PEP 373
Bugfix
2010-07-03
2020-01-01
Benjamin Peterson
3.5
PEP 478
Security
2015-09-13
2020-09-13
Larry Hastings
3.4
PEP 429
End-of-life
2014-03-16
2019-03-19
Larry Hastings
The official explanation is that version 2.7 will stop maintenance by 2020 and retire from then on, so 3.x is a good choice.
Many testing frameworks rely on python, such as interface testing, front-end web UI, mobile appium, etc., as well as many web development frameworks such as Flask, Django and so on. Python also has a good performance in artificial intelligence, cloud computing, big data and so on.
The elegance, simplicity and clarity of python are unmatched by other languages. choosing the version you need provides a basic guarantee for future work.
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JMeter Interface testing-Basics
Test-impression
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