old_contents: from __future__ import print_function
  
  from jupyter_kernel import MagicKernel
  
  
  class EvalKernel(MagicKernel):
      implementation = 'Eval'
      implementation_version = '1.0'
      language = 'python'
      language_version = '0.1'
      banner = "Eval kernel - evaluates simple Python statements and expressions"
      env = {}
  
      def get_usage(self):
          return "This is a usage statement."
  
      def set_variable(self, name, value):
          """
          Set a variable in the kernel language.
          """
          self.env[name] = value
  
      def get_variable(self, name):
          """
          Get a variable from the kernel language.
          """
          return self.env.get(name, None)
  
      def do_execute_direct(self, code):
          python_magic = self.line_magics['python']
          resp = python_magic.eval(code.strip())
          if not resp is None:
              self.Print(str(resp))
  
      def get_completions(self, token):
          python_magic = self.line_magics['python']
          return python_magic.get_completions(token)
  
      def get_kernel_help_on(self, expr, level=0):
          python_magic = self.line_magics['python']
          return python_magic.get_help_on(expr, level)
  
  if __name__ == '__main__':
      from IPython.kernel.zmq.kernelapp import IPKernelApp
      IPKernelApp.launch_instance(kernel_class=EvalKernel)
  
new_contents: from __future__ import print_function
  
  from jupyter_kernel import MagicKernel
  
  
  class EvalKernel(MagicKernel):
      implementation = 'Eval'
      implementation_version = '1.0'
      language = 'python'
      language_version = '0.1'
      banner = "Eval kernel - evaluates simple Python statements and expressions"
      env = {}
  
      def get_usage(self):
          return "This is a usage statement."
  
      def set_variable(self, name, value):
          """
          Set a variable in the kernel language.
          """
          self.env[name] = value
  
      def get_variable(self, name):
          """
          Get a variable from the kernel language.
          """
          return self.env.get(name, None)
  
      def do_execute_direct(self, code):
          python_magic = self.line_magics['python']
          return python_magic.eval(code.strip())
  
      def get_completions(self, token):
          python_magic = self.line_magics['python']
          return python_magic.get_completions(token)
  
      def get_kernel_help_on(self, expr, level=0):
          python_magic = self.line_magics['python']
          return python_magic.get_help_on(expr, level)
  
  if __name__ == '__main__':
      from IPython.kernel.zmq.kernelapp import IPKernelApp
      IPKernelApp.launch_instance(kernel_class=EvalKernel)
  
subject: Return python eval instead of printing it