如何在Haxe中调用外部Python类的成员函数？

Let's fix your code and cover all the necessary steps to get this working smoothly:

1. Complete the trace Call #

Your trace line was cut off, and since f() takes no arguments, you don't need the spread operator (...). Here's the corrected main function:

class Test {
    public static function main():Void {
        var py:TestPy = new TestPy();
        trace(py.f()); // Correct call to the no-argument method
    }
}

2. Compile to the Python Target #

For Haxe to interface with your Python class, you must compile to the Python target. Here's how to set this up:

• Save your Python class in a file (e.g., testpy.py)
• Save your Haxe extern (TestPy.hx) and test class (Test.hx) in the same directory
• Use the Haxe command line to compile, including your Python file in the build. Example:

  haxe -python output.py -main Test testpy.py
  

  This generates an output.py file that combines your Haxe-compiled code with the original Python class.

3. Confirm Extern Accuracy #

Your extern class is already correctly defined, but double-check these details to avoid issues:

• The class name (TestPy) matches exactly with the Python class name
• Method names and signatures (return type, arguments) are identical between the extern and Python class. Since f() returns a string and takes no args, your extern is spot-on.

4. Run the Generated Code #

Once compiled, execute the output Python file:

python output.py

You should see the trace output print "Hello World" as expected.

内容的提问来源于stack exchange，提问作者quant