class_docstr: Convert a TextIOBase string stream to a byte stream.
class_docstr_tok: ["Convert","a","TextIOBase","string","stream","to","a","byte","stream","."]
code: def read(self, size=-1):
      return self._encoding_call("read", size)
  
imports: import io
  import os
  import numpy
  import scipy.sparse
  from scipy.io import _mmio
label_desc: Use image node_id 4 for calling the _TextToBytesWrapper obj's underlying member method code with example usage: obj.read(size) and returns: self