parameters: (self)
return_statement: return nargs
docstring: Validate the alias, and return the number of arguments.
docstring_summary: Validate the alias, and return the number of arguments.
docstring_tokens: Validate the alias and return the number of arguments .
function: def validate(self):
          """Validate the alias, and return the number of arguments."""
          if self.name in self.blacklist:
              raise InvalidAliasError("The name %s can't be aliased "
                                      "because it is a keyword or builtin." % self.name)
          try:
              caller = self.shell.magics_manager.magics['line'][self.name]
          except KeyError:
              pass
          else:
              if not isinstance(caller, Alias):
                  raise InvalidAliasError("The name %s can't be aliased "
                                          "because it is another magic command." % self.name)
  
          if not (isinstance(self.cmd, str)):
              raise InvalidAliasError("An alias command must be a string, "
                                      "got: %r" % self.cmd)
  
          nargs = self.cmd.count('%s') - self.cmd.count('%%s')
    
          if (nargs > 0) and (self.cmd.find('%l') >= 0):
              raise InvalidAliasError('The %s and %l specifiers are mutually '
                                      'exclusive in alias definitions.')
  
          return nargs
function_tokens: def validate ( self ) : if self . name in self . blacklist : raise InvalidAliasError ( "The name %s can't be aliased " "because it is a keyword or builtin." % self . name ) try : caller = self . shell . magics_manager . magics [ 'line' ] [ self . name ] except KeyError : pass else : if not isinstance ( caller , Alias ) : raise InvalidAliasError ( "The name %s can't be aliased " "because it is another magic command." % self . name ) if not ( isinstance ( self . cmd , str ) ) : raise InvalidAliasError ( "An alias command must be a string, " "got: %r" % self . cmd ) nargs = self . cmd . count ( '%s' ) - self . cmd . count ( '%%s' ) if ( nargs > 0 ) and ( self . cmd . find ( '%l' ) >= 0 ) : raise InvalidAliasError ( 'The %s and %l specifiers are mutually ' 'exclusive in alias definitions.' ) return nargs