A code translator using AST from Python to Ruby. This is basically a NodeVisitor with ruby output. See ast documentation (https://docs.python.org/3/library/ast.html) for more information.
Execute the following:
pip install py2rb or git clone git://github.com/naitoh/py2rb.git
- Python 3.5, 3.6
- Ruby 2.4 or later
Sample 1:
$ cat tests/basic/oo_inherit_simple.py
class bar(object):
def __init__(self,name):
self.name = name
def setname(self,name):
self.name = name
class foo(bar):
registered = []
def __init__(self,val,name):
self.fval = val
self.register(self)
self.name = name
def inc(self):
self.fval += 1
def msg(self, a=None, b=None, c=None):
txt = ''
varargs = a, b, c
for arg in varargs:
if arg is None:
continue
txt += str(arg)
txt += ","
return txt + self.name + " says:"+str(self.fval)
@staticmethod
def register(f):
foo.registered.append(f)
@staticmethod
def printregistered():
for r in foo.registered:
print(r.msg())
a = foo(10,'a')
a.setname('aaa')
b = foo(20,'b')
c = foo(30,'c')
a.inc()
a.inc()
c.inc()
print(a.msg())
print(b.msg())
print(c.msg(2,3,4))
print("---")
foo.printregistered()
The above will result in
$ py2rb tests/basic/oo_inherit_simple.py
class Bar
def initialize(name)
@name = name
end
def setname(name)
@name = name
end
end
class Foo < Bar
def method_missing(method, *args)
self.class.__send__ method, *args
end
@@registered = []
def initialize(val, name)
@fval = val
Foo.register(self)
@name = name
end
def inc()
@fval += 1
end
def msg(a: nil, b: nil, c: nil)
txt = ""
varargs = [a, b, c]
for arg in varargs
if arg === nil
next
end
txt += arg.to_s
txt += ","
end
return ((txt + @name) + " says:") + @fval.to_s
end
def self.register(f)
@@registered.push(f)
end
def self.printregistered()
for r in @@registered
print(r.msg())
end
end
def self.registered; @@registered; end
def self.registered=(val); @@registered=val; end
def registered; @registered = @@registered if @registered.nil?; @registered; end
def registered=(val); @registered=val; end
end
a = Foo.new(10, "a")
a.setname("aaa")
b = Foo.new(20, "b")
c = Foo.new(30, "c")
a.inc()
a.inc()
c.inc()
print(a.msg())
print(b.msg())
print(c.msg(a: 2, b: 3, c: 4))
print("---")
Foo.printregistered()
Sample 2:
$ cat tests/deep-learning-from-scratch/and_gate.py
# coding: utf-8
import numpy as np
def AND(x1, x2):
x = np.array([x1, x2])
w = np.array([0.5, 0.5])
b = -0.7
tmp = np.sum(w*x) + b
if tmp <= 0:
return 0
else:
return 1
if __name__ == '__main__':
for xs in [(0, 0), (1, 0), (0, 1), (1, 1)]:
y = AND(xs[0], xs[1])
print(str(xs) + " -> " + str(y))
The above will result in
$ py2rb tests/deep-learning-from-scratch/and_gate.py
require 'numo/narray'
def AND(x1, x2)
x = Numo::NArray.cast([x1, x2])
w = Numo::NArray.cast([0.5, 0.5])
b = -0.7
tmp = ((w * x).sum()) + b
if tmp <= 0
return 0
else
return 1
end
end
if __FILE__ == $0
for xs in [[0, 0], [1, 0], [0, 1], [1, 1]]
y = AND(xs[0], xs[1])
print((xs.to_s + (" -> ")) + y.to_s)
end
end
Sample 3 (Convert all local dependent module files of specified Python file):
$ git clone git://github.com/chainer/chainer.git
$ py2rb chainer/chainer/__init__.py -m -p chainer -r -w -f
Try : chainer/chainer/__init__.py -> chainer/chainer/__init__.rb : [OK]
Warning : yield is not supported :
Warning : yield is not supported :
Try : chainer/chainer/configuration.py -> chainer/chainer/configuration.rb : [Warning]
Try : chainer/chainer/cuda.py -> chainer/chainer/cuda.rb : [OK]
:
:
Try : chainer/chainer/utils/array.py -> chainer/chainer/utils/array.rb : [OK]
$ ./run_tests.py
Will run all tests, that are supposed to work. If any test fails, it's a bug.
$ ./run_tests.py -a
Will run all tests including those that are known to fail (currently). It should be understandable from the output.
$ ./run_tests.py -x or $ ./run_tests.py --no-error
Will run tests but ignore if an error is raised by the test. This is not affecting the error generated by the test files in the tests directory.
For more flags then described here
./run_tests.py -h
MIT, see the LICENSE file for exact details.
