如何用Ruby rspec测试Python代码？

Question

我尝试用以下方法测试rubypython：

bundle exec irb
require 'rubypython'
RubyPython.start

这导致了一个错误。在

错误消息是：

^{pr2}$

已安装Python 2.7： irb(main):002:0> RubyPython.start(:python_exec => 'python2.7') RubyPython::InvalidInterpreter: An invalid interpreter was specified. from /home/nitrous/code/.bundle/gems/rubypython-0.6.3/lib/rubypython.rb:67:in `block in start' from /home/nitrous/code/.bundle/gems/rubypython-0.6.3/lib/rubypython/python.rb:10:in `synchronize' from /home/nitrous/code/.bundle/gems/rubypython-0.6.3/lib/rubypython/python.rb:10:in `synchronize' from /home/nitrous/code/.bundle/gems/rubypython-0.6.3/lib/rubypython.rb:54:in `start' from (irb):2 from /usr/local/opt/rbenv/versions/2.1.5/bin/irb:11:in `<main>'

文档建议我可以运行使用Ruby导入的Python，在我的例子中，可以通过Rspec进行测试，但事实并非如此

我应该能够从Ruby中导入并运行Python吗？在

Answer 1

在最近的Debian构建中使用RubyPython时，我曾多次遇到这个问题。在

问题在于RubyPython:：Interpreter\find_python_lib方法。此方法使用硬编码路径和操作系统检测来查找库，而不是调用python config。在

我使用以下代码修复该方法：

require "rubypython"
class RubyPython::Interpreter
  alias :find_python_lib_orig :find_python_lib

  def find_python_lib
    @libbase = "#{::FFI::Platform::LIBPREFIX}#{@version_name}"
    @libext = ::FFI::Platform::LIBSUFFIX
    @libname = "#{@libbase}.#{@libext}"

    # python-config  confdir provides location of .so
    config_util = "#{version_name}-config"
    confdir = %x(#{config_util}  configdir).chomp

    library = File.join(confdir, @libname)
    if (File.exist? library)
      @locations = [ library ]
    else
      library = find_python_lib_orig
    end
    library
  end
end

RubyPython.start(:python_exe => "/usr/bin/python2.7") 

如果pythonconfig找不到库，则调用原始（有缺陷）方法。在