code: def set_full_ascii_charmap():
      DataGen.CHARMAP = ["", "", ""] + [chr(i) for i in range(32, 127)]
  
file_path: attention-ocr/aocr/util/data_gen.py
imports: from __future__ import absolute_import
  import sys
  import numpy
  import tensorflow
  from PIL import Image
  from six import BytesIO
  from .bucketdata import BucketData
label_desc: Use image node_id 1 for calling the DataGen obj's underlying member method code with example usage: obj.set_full_ascii_charmap() without return types