def _GetEnviron(self, name):
    try:
      return os.environ[name]
    except KeyError:
      raise ConfigurationError('%s is not set in environment.' % name)
left_gain - amount of gain to apply to the left channel (in dB)
dataset/ETHPy150Open GoogleCloudPlatform/python-compat-runtime/appengine-compat/exported_appengine_sdk/google/appengine/api/blobstore/blobstore_stub.py/BlobstoreServiceStub._GetEnviron--crossover with--dataset/ETHPy150Open jiaaro/pydub/pydub/effects.py/apply_gain_stereo