Python新手求助：Pydev中Behave安装后运行异常问题

Hey there! Since you confirmed the terminal behave command works perfectly, your core setup (Python, Behave installation, test code) is solid—we just need to tweak a few IDE configurations to get everything running smoothly in Eclipse. Let's break down each problem:

1. "Undefined variables given, when, then" Error #

This is a PyDev code analysis quirk—PyDev doesn't recognize that given, when, then are global decorators provided by Behave. Here are two easy fixes:

• Quick fix per step file: Add this comment at the top of your step.py file to tell PyDev to ignore these undefined variables:

  #@PydevCodeAnalysisIgnore
  

• Global fix for all projects: Go to Window > Preferences > PyDev > Editor > Code Analysis > Undefined, then:
  • Under Forced Builtins, add behave (this tells PyDev to recognize Behave's global symbols)
  • Or, under Ignore locally, add given,when,then to exclude these specific names from the undefined check

2. 0 Tests Executed When Running step.py as Python Unit Test #

Behave step files aren't standard Python unit tests (they don't use unittest.TestCase or pytest-style assertions directly). You can't run them as unit tests—instead, you need to run them via Behave's dedicated runner:

• Right-click your .feature file (or the entire test directory)
• Select Run As > Run Configurations
• Create a new Behave configuration:
  • Name it something descriptive (e.g., "My Behave Tests")
  • Under Main, specify the path to your .feature file or test directory
  • Click Run—this will execute all your Behave tests properly, just like the terminal command

3. "No matching glue code" Warning in .feature Files #

The Cucumber plugin can't locate your step definitions because it doesn't know where to look for them. Fix this by setting the glue path:

• Right-click your project > Properties > Cucumber
• In the Glue section, add the path to the directory/package where your step.py lives (e.g., features/steps or your Python package name)
• Make sure your .feature files are in the default features directory (or adjust the Behave run configuration to point to their location if you're using a custom structure)

Once you apply these changes, your IDE should play nice with Behave, and all those annoying warnings/errors should disappear. Happy testing!

内容的提问来源于stack exchange，提问作者Benjamin Bettan