无法加载' pry‘-’`require'：无法加载此类文件-pry (LoadError)

Question

我正在尝试调试一个简单的ruby控制台脚本，并在尝试要求pry时得到一个加载错误：

• 我正在使用rbenv来管理环境。
• 我正在使用Ruby版本: 2.3.1。
• 尝试使用Pry '~> 0.10.4‘

/Users/gangelo/.rbenv/versions/2.3.1/lib/ruby/site_ruby/2.3.0/rubygems/core_ext/kernel_require.rb:55:in‘`require'：无法加载这样的文件- pry (LoadError)

我以前在rails应用程序中使用过Pry和Byebug，从来没有这样的问题。在寻找解决方案的过程中，我发现大多数问题都与Gemfile中不包含Pry或在gem文件中的正确环境中不包含Pry Gem有关；这不是我的情况，我做错了什么？

# /Gemfile
group :development, :test do
  gem 'pry', '~> 0.10.4'
end

在我的剧本里：

# /calculator/rpn_calculator_service.rb
module RealPage
  module Calculator
    # Provides Reverse Polish Notation computation services.
    class RPNCalculatorService < CalculatorService
      include Helpers::Arrays

      def initialize
        super RPNInputParser.new
      end

      def compute(input)
        # Load error here :(
        require 'pry'; binding.pry
        # Code removed for brevity...
      end
      # Code removed for brevity...
    end
  end
end

Answer 1

我在运行gem 汽车时也收到了类似的错误。

/Users/giovanni/.rvm/rubies/ruby-2.2.3/lib/ruby/site_ruby/2.2.0/rubygems/core_ext/kernel_require.rb:55:in `require': cannot load such file -- pry (LoadError)
    from /Users/giovanni/.rvm/rubies/ruby-2.2.3/lib/ruby/site_ruby/2.2.0/rubygems/core_ext/kernel_require.rb:55:in `require'
    from /Users/giovanni/.rvm/gems/ruby-2.2.3/gems/cars-0.0.6/bin/cars:3:in `<top (required)>'
    from /Users/giovanni/.rvm/gems/ruby-2.2.3/bin/cars:23:in `load'
    from /Users/giovanni/.rvm/gems/ruby-2.2.3/bin/cars:23:in `<main>'
    from /Users/giovanni/.rvm/gems/ruby-2.2.3/bin/ruby_executable_hooks:15:in `eval'
    from /Users/giovanni/.rvm/gems/ruby-2.2.3/bin/ruby_executable_hooks:15:in `<main>'

我扣除了可能我的宝石没有安装所以我就跑了：

➜  ~ gem install pry
Fetching: coderay-1.1.2.gem (100%)
Successfully installed coderay-1.1.2
Fetching: method_source-0.9.0.gem (100%)
Successfully installed method_source-0.9.0
Fetching: pry-0.11.3.gem (100%)
Successfully installed pry-0.11.3
3 gems installed

然后照常执行我的创业板

Answer 2

bundler.io的这些步骤对我来说是有效的：

1. 更新到最新版本的bundler：gem install bundler
2. 再安装一次：bundle install