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Cannot use interface methods when returned through function returning []Interface type #357
Description
Reproduction steps:
- Run commands:
mkdir dum
cd dum
go mod init dummy.com/dum
mkdir hello
- Create file named
hello/hello.gowith following contents:
package hello
type Example interface {
Sample() int
}
type ExampleImpl struct {
sample int
}
func (example *ExampleImpl) Sample() int {
return example.sample
}
func Hello() []Example {
return []Example{&ExampleImpl{sample: 123}, &ExampleImpl{sample: 321}}
}- Build with
gopy:
gopy build -output=out dummy.com/dum/hello
- Run the following Python code:
>>> from out import hello
>>> output = hello.Hello()
>>> output[0].Sample()
panic: interface conversion: *hello.Example is not hello.Example: missing method Sample
goroutine 17 [running, locked to thread]:
main.hello_Example_Sample(0x2)
/tmp/dum/out/hello.go:1230 +0xf9
zsh: IOT instruction (core dumped) python
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