def _AssertProgressKey(self):
    if self.progress_key is None:
      raise BadStateError('%s: Progress key is missing' % str(self))
Get the actual position for the start of a line number.
dataset/ETHPy150Open GoogleCloudPlatform/python-compat-runtime/appengine-compat/exported_appengine_sdk/google/appengine/tools/bulkloader.py/_WorkItem._AssertProgressKey--crossover with--dataset/ETHPy150Open adieu/allbuttonspressed/pygments/formatters/img.py/ImageFormatter._get_linenumber_pos