ruby - 无法加载 'pry' - `require' : cannot load such file -- pry (LoadError)

Question

我正在尝试调试一个简单的 ruby​​ 控制台脚本，但在尝试要求 pry 时出现加载错误:

• 我正在使用 rbenv 来管理环境。
• 我使用的是 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': cannot load such file -- pry (加载错误)

我过去曾在 Rails 应用程序中使用过 Pry 和 Byebug，但从未遇到过此类问题。在寻找解决方案时，我发现大多数问题都与 Gemfile 中不包含 Pry 或 Gem 文件中正确环境中的 Pry gem 不包含有关；我不是这样，我做错了什么？

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

在我的脚本中:

# /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

我在尝试运行我的 gem 时收到类似的错误 cars :

/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>'

我推断可能我的 gem 没有安装所以我就运行了:

➜  ~ 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

然后像往常一样执行我的 gem