File "./yummain.py", line 75 except Errors.LockError, e: ^ SyntaxError: invalid syntax

这个错误通常是由于 Python 版本不兼容导致的，可能是在 Python 3 中使用了 Python 2 的异常语法。
您可以尝试以下几个解决方法：

升级 Python 版本。在命令行中输入以下命令可以查看当前 Python 版本：
python --version
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如果版本较旧，可以考虑更新到最新的版本。

修改代码以适应 Python 3。将异常语法更改为 Python 3 的语法。例如，将 except Errors.LockError, e: 更改为 except Errors.LockError as e:。

切换到 Python 2。如果您的代码是在 Python 2 下编写的，您可以考虑切换到 Python 2 运行代码。在命令行中输入以下命令可以查看当前系统中是否安装了 Python 2：
python2 --version
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如果 Python 2 没有安装，可以使用以下命令安装：
sudo yum install python2
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安装完成后，您可以使用以下命令运行代码：
python2 your_code.py
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相关问题

Loaded plugins: product-id, refresh-packagekit, security, subscription-manager This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register. Error: No matching Packages to list [root@253Test ~]# yum Loaded plugins: product-id, refresh-packagekit, security, subscription-manager This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register. You need to give some command Traceback (most recent call last): File "/usr/bin/yum", line 29, in <module> yummain.user_main(sys.argv[1:], exit_code=True) File "/usr/share/yum-cli/yummain.py", line 285, in user_main errcode = main(args) File "/usr/share/yum-cli/yummain.py", line 105, in main base.getOptionsConfig(args) File "/usr/share/yum-cli/cli.py", line 310, in getOptionsConfig self.parseCommands() # before we return check over the base command + args File "/usr/share/yum-cli/cli.py", line 333, in parseCommands self.usage() File "/usr/share/yum-cli/cli.py", line 1340, in usage sys.stdout.write(self.optparser.format_help()) File "/usr/lib64/python2.6/optparse.py", line 1641, in format_help result.append(self.get_usage() + "\n") File "/usr/lib64/python2.6/optparse.py", line 1583, in get_usage self.expand_prog_name(self.usage)) File "/usr/lib64/python2.6/optparse.py", line 374, in format_usage return _("Usage: %s\n") % usage UnicodeDecodeError: 'ascii' codec can't decode byte 0xe4 in position 0: ordinal not in range(128)

这个错误看起来像是编码问题。你的系统可能使用了非ASCII字符，导致在输出时出现编码错误。你可以尝试设置环境变量LC_ALL为一个支持你系统编码的值，例如：
export LC_ALL=en_US.UTF-8
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然后再尝试运行你的命令。如果问题仍然存在，你可以查看系统日志文件，以获取更多信息来解决问题。

#!/usr/bin/python import sys try: import yum except ImportError: print >> sys.stderr, """\ There was a problem importing one of the Python modules required to run yum. The error leading to this problem was: %s Please install a package which provides this module, or verify that the module is installed correctly. It's possible that the above module doesn't match the current version of Python, which is: %s If you cannot solve this problem yourself, please go to the yum faq at: http://yum.baseurl.org/wiki/Faq """ % (sys.exc_value, sys.version) sys.exit(1) sys.path.insert(0, '/usr/share/yum-cli') try: import yummain yummain.user_main(sys.argv[1:], exit_code=True) except KeyboardInterrupt, e: print >> sys.stderr, "\n\nExiting on user cancel." sys.exit(1) 使用python3语法如何修改

你可以将 print 函数的语法从 Python 2 转换为 Python 3 的语法，还需要修改 except 捕获异常的语法。修改后的代码如下：
#!/usr/bin/python3
import sys
try:
import yum
except ImportError:
print("""There was a problem importing one of the Python modules required to run yum. The error leading to this problem was:
{}
Please install a package which provides this module, or verify that the module is installed correctly. It's possible that the above module doesn't match the current version of Python, which is: {}
If you cannot solve this problem yourself, please go to the yum faq at:
http://yum.baseurl.org/wiki/Faq""".format(sys.exc_info()[1], sys.version), file=sys.stderr)
sys.exit(1)

sys.path.insert(0, '/usr/share/yum-cli')
try:
import yummain
yummain.user_main(sys.argv[1:], exit_code=True)
except KeyboardInterrupt as e:
print("\n\nExiting on user cancel.", file=sys.stderr)
sys.exit(1)
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这样就可以使用 Python 3 来执行这个脚本了。