Robot Framework应用——在Virtualenv和Virtualwrapper的虚拟环境中启动Robot Framework的RIDE时报的错误问题的解决

Posted 2021-06-29 我是干勾鱼

转载请注明出处：http://blog.csdn.net/dongdong9223/article/details/116706660
本文出自【我是干勾鱼的博客】

之前在Robot Framework应用——Mac环境下Robot Framework的安装及简单实用中讲解了Mac环境下Robot Framework的安装。经常会在虚拟环境下使用Python，之前在使用Virtualenv和Virtualwrapper创建Python虚拟环境中曾经讲解过Python虚拟环境的搭建，而在安装Robot Framework的时候，如果Python是在虚拟环境中，会遇到一些问题。

第一个错误：

$ ./script.sh ride.py
This program needs access to the screen. Please run with a
Framework build of python, and only when you are logged in
on the main display of your Mac.

在报错This program needs access to the screen. Please run with a Framework build of python…这篇文章中提到了这个问题，思路是通过wxPythonVirtualenvOnMac这篇文章解决的，笔者这里使用的是Python3.6，如果设置成Python3.6的环境：

#!/bin/bash
  
# what real Python executable to use
PYVER=3.6
PYTHON=/Library/Frameworks/Python.framework/Versions/$PYVER/bin/python$PYVER

# find the root of the virtualenv, it should be the parent of the dir this script is in
ENV=`$PYTHON -c "import os; print os.path.abspath(os.path.join(os.path.dirname(\\"$0\\"), '..'))"`

# now run Python with the virtualenv set as Python's HOME
export PYTHONHOME=$ENV
exec $PYTHON "$@"

，所以在script.sh这个配置文件中设置Python3.6的环境应该是不太合适的，还是应该设置Python2.7的环境，还会报错：

$ ./script.sh ride.py
  File "<string>", line 1
    import os; print os.path.abspath(os.path.join(os.path.dirname("./script.sh"), '..'))
                      ^
SyntaxError: invalid syntax
Fatal Python error: Py_Initialize: unable to load the file system codec
ModuleNotFoundError: No module named 'encodings'

Current thread 0x00007fffaabc3380 (most recent call first):
Abort trap: 6

并且Python退出了：

在虚拟环境下执行Python，发现是Python2.7的环境：

$ python
Python 2.7.10 (default, Oct  6 2017, 22:29:07) 
[GCC 4.2.1 Compatible Apple LLVM 9.0.0 (clang-900.0.31)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>>

所以在script.sh这个配置文件中设置Python3.6的环境应该是不太合适的，还是应该设置Python2.7的环境。另外这里要注意，Python2.7与Python2.6的安装目录私有区别的：

• Python2.7：/System/Library/Frameworks/Python.framework/Versions/2.7/bin/python$PYVER

• Python3.6：/Library/Frameworks/Python.framework/Versions/$PYVER/bin/python$PYVER

Python2.7是“/System/Library/。。。”目录下，而Python3.6直接是在“/Library/。。。”目录下。

#!/bin/bash
  
# what real Python executable to use
PYVER=2.7
PYTHON=/System/Library/Frameworks/Python.framework/Versions/2.7/bin/python$PYVER

# find the root of the virtualenv, it should be the parent of the dir this script is in
ENV=`$PYTHON -c "import os; print os.path.abspath(os.path.join(os.path.dirname(\\"$0\\"), '..'))"`

# now run Python with the virtualenv set as Python's HOME
export PYTHONHOME=$ENV
exec $PYTHON "$@"

参考：

Robot Framework应用——Mac环境下Robot Framework的安装及简单实用

使用Virtualenv和Virtualwrapper创建Python虚拟环境

报错This program needs access to the screen. Please run with a Framework build of python…

wxPythonVirtualenvOnMac

Mac下安装配置Python2和Python3并相互切换使用