code: def can_run_c_extension(name=None):
      
      def can_run_cdtw():
          """ Python C extension for computing DTW """
          try:
              import aeneas.cdtw.cdtw
              return True
          except ImportError:
              return False
  
      def can_run_cmfcc():
          """ Python C extension for computing MFCC """
          try:
              import aeneas.cmfcc.cmfcc
              return True
          except ImportError:
              return False
  
      def can_run_cew():
          """ Python C extension for synthesizing with eSpeak """
          try:
              import aeneas.cew.cew
              return True
          except ImportError:
              return False
  
      def can_run_cfw():
          """ Python C extension for synthesizing with Festival """
          try:
              import aeneas.cfw.cfw
              return True
          except ImportError:
              return False
  
      if name == "cdtw":
          return can_run_cdtw()
      elif name == "cmfcc":
          return can_run_cmfcc()
      elif name == "cew":
          return can_run_cew()
      elif name == "cfw":
          return can_run_cfw()
      else:
          # NOTE cfw is still experimental!
          return can_run_cdtw() and can_run_cmfcc() and can_run_cew()
docs: Determine whether the given Python C extension loads correctly.
  
      If ``name`` is ``None``, tests all Python C extensions,
      and return ``True`` if and only if all load correctly.
  
      :param string name: the name of the Python C extension to test
      :rtype: bool