code: def write(self, x):
      self.f.write(x)
      self.f.flush()
  
file_path: backtrader/backtrader/utils/flushfile.py
imports: from __future__ import absolute_import, division, print_function, unicode_literals
  import sys
label_desc: Use image node_id 2 for calling the flushfile obj's underlying member method code with example usage: obj.write(x) without return types