Python的Ruby等价物'；s"；试一试；？

我正在尝试将一些Python代码转换成Ruby。Ruby中是否有与Python中的

try

语句等价的语句

 begin
     some_code
 rescue
      handle_error  
 ensure 
     this_code_is_always_executed
 end

---

详细信息：

以此为例：

begin  # "try" block
    puts 'I am before the raise.'  
    raise 'An error has occurred.' # optionally: `raise Exception, "message"`
    puts 'I am after the raise.'   # won't be executed
rescue # optionally: `rescue Exception => ex`
    puts 'I am rescued.'
ensure # will always get executed
    puts 'Always gets executed.'
end 

begin
    raise "Error"
rescue RuntimeError
    puts "Runtime error encountered and rescued."
end

Python中的等效代码为：

try:     # try block
    print('I am before the raise.')
    raise Exception('An error has occurred.') # throw an exception
    print('I am after the raise.')            # won't be executed
except:  # optionally: `except Exception as ex:`
    print('I am rescued.')
finally: # will always get executed
    print('Always gets executed.')

---

如果要捕获特定类型的异常，请使用：

begin
    # Code
rescue ErrorClass
    # Handle Error
ensure
    # Optional block for code that is always executed
end

这种方法比裸的“rescue”块更好，因为没有参数的“rescue”将捕获StandardError或其任何子类，包括NameError和TypeError

以下是一个例子：

begin  # "try" block
    puts 'I am before the raise.'  
    raise 'An error has occurred.' # optionally: `raise Exception, "message"`
    puts 'I am after the raise.'   # won't be executed
rescue # optionally: `rescue Exception => ex`
    puts 'I am rescued.'
ensure # will always get executed
    puts 'Always gets executed.'
end 

begin
    raise "Error"
rescue RuntimeError
    puts "Runtime error encountered and rescued."
end

---

请出示一个密码！查找Ruby

rescue

（和

raise

）哦，太棒了！感谢您还提供了一个python示例。我要“试试”它！哈哈！还有一个奇怪的

else

子句，只有在没有触发异常的情况下才会执行。这是最简单的答案，也是可以理解的，感谢从形式和内容两个角度给出的最佳答案之一；非常感谢伟大的链接！这真的很有帮助。