code: def count_lines(path):
      with io.open(path, encoding="utf-8", errors="ignore") as f:
          return sum([1 for _ in f])
  
file_path: chainer/examples/seq2seq/wmt_preprocess.py
imports: from __future__ import unicode_literals
  import argparse
  import collections
  import io
  import re
  import progressbar
label_desc: Use image node_id 2 for calling a global function with example usage: count_lines(path) and returns: sum