mirror of https://github.com/go-python/gopy.git
126 lines
2.6 KiB
Markdown
126 lines
2.6 KiB
Markdown
gopy
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====
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`gopy` generates (and compiles) a `CPython` extension module from a `go` package.
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## Installation
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```sh
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$ go get github.com/go-python/gopy
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```
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## Documentation
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Documentation is available on [godoc](https://godoc.org):
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https://godoc.org/github.com/go-python/gopy
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or directly from the command-line prompt:
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```sh
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$ gopy help
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gopy -
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Commands:
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bind generate and compile (C)Python language bindings for Go
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gen generate (C)Python language bindings for Go
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Use "gopy help <command>" for more information about a command.
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$ gopy help gen
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Usage: gopy gen <go-package-name>
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gen generates (C)Python language bindings for a Go package.
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ex:
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$ gopy gen [options] <go-package-name>
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$ gopy gen github.com/go-python/gopy/_examples/hi
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Options:
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-lang="python": target language for bindings
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-output="": output directory for bindings
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$ gopy help bind
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Usage: gopy bind <go-package-name>
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bind generates and compiles (C)Python language bindings for a Go package.
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ex:
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$ gopy bind [options] <go-package-name>
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$ gopy bind github.com/go-python/gopy/_examples/hi
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Options:
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-output="": output directory for bindings
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```
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## Examples
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```sh
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$ gopy bind -output=out github.com/go-python/gopy/_examples/hi
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$ ls out
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hi.so
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$ cd out
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$ python2
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>>> import hi
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>>> dir(hi)
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['Add', 'Concat', 'Hello', 'Hi', 'NewPerson', 'Person', '__doc__', '__file__', '__name__', '__package__']
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>>> hi.Hello("you")
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hello you from go
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```
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You can also run:
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```sh
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go test -v -run=TestBind
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=== RUN TestBind
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processing "Add"...
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processing "Concat"...
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processing "Hello"...
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processing "Hi"...
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processing "NewPerson"...
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processing "Person"...
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processing "Add"...
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processing "Concat"...
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processing "Hello"...
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processing "Hi"...
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processing "NewPerson"...
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processing "Person"...
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github.com/go-python/gopy/_examples/hi
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_/home/binet/dev/go/root/tmp/gopy-431003574
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--- hi.Hi()...
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hi from go
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--- hi.Hello('you')...
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hello you from go
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--- hi.Add(1, 41)...
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42
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--- hi.Concat('4', '2')...
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42
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--- doc(hi.Person):
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Person is a simple struct
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--- p = hi.Person()...
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<hi.Person object at 0x7fc46cc330f0>
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['Age', 'Name', '__class__', '__delattr__', '__doc__', '__format__', '__getattribute__', '__hash__', '__init__', '__new__', '__reduce__', '__reduce_ex__', '__repr__', '__setattr__', '__sizeof__', '__str__', '__subclasshook__']
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--- p.Name: None
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--- p.Age: None
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--- doc(p):
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Person is a simple struct
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--- PASS: TestBind (2.13s)
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PASS
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ok github.com/go-python/gopy 2.135s
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```
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## Limitations
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- wrap `go` structs into `python` classes
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- better pythonization: turn `go` `errors` into `python` exceptions
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- only `python-2` supported for now
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