class_docstr: Tracker for uploader progress and status.
class_docstr_tok: ["Tracker","for","uploader","progress","and","status","."]
docstr: Creates context manager tracker for uploading a blob.
  
  Args:
    blob_bytes: Total byte size of the blob being uploaded.
code: def blob_tracker(self, blob_bytes):
      """Creates context manager tracker for uploading a blob.
  
      Args:
        blob_bytes: Total byte size of the blob being uploaded.
      """
      self._overwrite_line_message(
          "Uploading binary object (%s)"
          % readable_bytes_string(blob_bytes)
      )
      try:
          yield _BlobTracker(self._stats, blob_bytes)
      finally:
          pass
  
imports: import contextlib
  from datetime import datetime
  import sys
  import time
label_desc: Use image node_id 11 for calling the UploadTracker obj's underlying member method code with example usage: obj.blob_tracker(blob_bytes) without return types