使用SST Web测试框架时遇Python报错NameError: 'StandardError'未定义求助

Hey there! I’ve dealt with similar Python 2 vs 3 compatibility headaches before, so let’s get this sorted for you.

Why this error pops up #

The StandardError class was a core exception type in Python 2, but it got fully removed in Python 3—replaced by the base Exception class instead. Since SST 0.2.4 was built with Python 2 in mind, its code still references StandardError, which your Python 3.6.4 interpreter doesn’t recognize at all.

Step-by-step fix #

Here’s how to update the SST code to play nice with Python 3:

1. Find where SST is installed: Run this command in your terminal to get the installation path:

   pip show sst | grep Location
   

2. Track down files with StandardError: Head to the SST directory, then use a search tool to find all instances of the outdated class. For Linux/macOS:

   grep -r "StandardError" /path/to/sst/installation
   

   For Windows PowerShell:

   Get-ChildItem -Path "C:\path\to\sst\installation" -Recurse | Select-String -Pattern "StandardError"
   

3. Replace StandardError with Exception: Open each file that has the reference, swap every occurrence of StandardError with Exception. This works because Exception in Python 3 does exactly what StandardError did in Python 2—it’s the base class for all non-system-exit exceptions.
4. Save and re-run: Once all updates are done, fire up your SST test code again. The NameError should be gone.

Alternative (no source code edits) #

If you’d rather not tweak the SST package directly, you could run your tests using Python 2.7 instead—since StandardError is natively supported there. Just set up a Python 2.7 environment and install SST there to avoid conflicts with your Python 3 setup.

内容的提问来源于stack exchange，提问作者Amol Kumbhar