code: def child_close_fds():
      '''close file descriptors that a child process should not inherit.
         Should be called from child processes.'''
      global child_fd_list
      import os
      while len(child_fd_list) > 0:
          fd = child_fd_list.pop(0)
          try:
              os.close(fd)
          except Exception as msg:
              pasf child_close_fds():
      '''close file descriptors that a child process should not inherit.
         Should be called from child processes.'''
      global child_fd_list
      import os
      while len(child_fd_list) > 0:
          fd = child_fd_list.pop(0)
          try:
              os.close(fd)
          except Exception as msg:
              pass
docs: close file descriptors that a child process should not inherit.
         Should be called from child processes.