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我尝试rubypython使用以下内容进行测试:

bundle exec irb
require 'rubypython'
RubyPython.start

这导致了一个错误。

错误信息是:

Python-2.7.5  python --version
Python 2.7.6
➜  Python-2.7.5  cd ..
➜  code  ls
design  Gemfile  Gemfile.lock  Python-2.7.5  Python-2.7.5.tgz  ratelimit_spec.rb
➜  code  bundle exec irb
irb(main):001:0> require 'rubypython'
=> true
irb(main):002:0> RubyPython.start
RubyPython::InvalidInterpreter: An invalid interpreter was specified.

Python 2.7 已安装: 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,在我的情况下,可以通过 Rspec 进行测试,但事实并非如此。

我应该能够从 Ruby 中导入然后运行 ​​Python 吗?

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1 回答 1

1

在最近的 Debian 构建中使用 RubyPython 时,我遇到过几次这个问题。

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。

我使用以下代码来修复该方法:

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,这将调用原始(有缺陷的)方法。

于 2016-09-10T19:02:12.960 回答