yocto 执行 ./repo init -u xxxx 时出现 “except OSError, e: SyntaxError: invalid syntax“ 异常报错

问题描述：

        在参考正点原子文档《I.MX6U 构建Yocto根文件系统V1.3》，执行如下命令：

./repo init -u https://source.codeaurora.org/external/imx/fsl-arm-yocto-bsp -b imx-4.1-krogoth

    出现以下的异常，导致程序终止，如下所示：

  File "./repo", line 175
    except OSError, e:
                  ^
SyntaxError: invalid syntax

问题分析：

   这种问题一般都是安装了python3后修改了连接导致指向python版本有问题 

解决方法：

    将python版本修改为python2.7即可；

    在ubuntu terminal 执行以下命令：

sudo update-alternatives –config python

    执行以上命令出现以下的 error：

sudo update-alternatives –-config python
update-alternatives: error: unknown argument '–-config'

    以上error解决参考链接：python 切换系统默认版本

    重新执行以上的命令即可，如下所示：

gcf@ubuntu:~/workfile/zdyz/yocto/fsl-release-bsp$ cat repo.sh 
 ./repo init -u  https://source.codeaurora.org/external/imx/fsl-arm-yocto-bsp -b imx-4.1-krogoth
gcf@ubuntu:~/workfile/zdyz/yocto/fsl-release-bsp$ ./repo.sh 
Getting repo ...
   from git://codeaurora.org/tools/repo.git
remote: Enumerating objects: 220, done.
remote: Counting objects: 100% (220/220), done.
remote: Compressing objects: 100% (220/220), done.
remote: Total 7231 (delta 3), reused 207 (delta 0), pack-reused 7011
Receiving objects: 100% (7231/7231), 2.02 MiB | 11.00 KiB/s, done.
Resolving deltas: 100% (5075/5075), done.
From git://codeaurora.org/tools/repo
 * [new branch]      aosp-new/main -> origin/aosp-new/main
 * [new branch]      aosp-new/maint -> origin/aosp-new/maint
 * [new branch]      aosp-new/master -> origin/aosp-new/master
 * [new branch]      aosp-new/repo-1 -> origin/aosp-new/repo-1
 * [new branch]      aosp-new/stable -> origin/aosp-new/stable
 * [new branch]      caf-stable -> origin/caf-stable
 * [new branch]      master     -> origin/master
 * [new branch]      qc-stable  -> origin/qc-stable
 * [new branch]      repo-2     -> origin/repo-2
………………
 * [new branch]      nxp/imx-morty -> origin/nxp/imx-morty
 * [new branch]      nxp/scm-imx-3.14.52-1.1.0_ga -> origin/nxp/scm-imx-3.14.52-1.1.0_ga
 * [new branch]      nxp/scm-imx-3.14.52-1.1.1_ga -> origin/nxp/scm-imx-3.14.52-1.1.1_ga

Your Name  [xxxxxxxx]: 
Your Email [xxxxxxxx@126.com]: 

Your identity is: xxxxxxx <xxxxxxx>
is this correct [y/n]? y

Testing colorized output (for 'repo diff', 'repo status'):
  black    red      green    yellow   blue     magenta   cyan     white 
  bold     dim      ul       reverse 
Enable color display in this user account (y/n)? y

repo initialized in /home/gcf/workfile/zdyz/yocto/fsl-release-bsp

    获取完成后，可以看到在当前路径的目录下多了一个.repo 文件夹。

gcf@ubuntu:~/workfile/zdyz/yocto/fsl-release-bsp$ ls -a
.  ..  repo  .repo  repo.sh  repo.tar.bz2

    接下来，参考《I.MX6U 构建Yocto根文件系统V1.3》文档，继续执行后续的内容；