def function_main()

in src/rekognition/detect-faces/handler.py [0:0]

• 33 lines of code
• 8 McCabe index (conditional complexity)

def function_main(event:Mapping[str,Any], _=None):
  '''
  Convert the input into a Amazon Rekognition call...
  '''
  response = detect_faces(event['Image'])

  '''
  Confirm the face is usable...
  '''
  valid_faces = [face for face in response['FaceDetails'] if face['Confidence'] > 90]
  if len(valid_faces) == 0:
    raise NoFacesDetectedException()
  elif len(valid_faces) > 1:
    raise TooManyFacesDetectedException()

  user_face = valid_faces[0]

  '''
  Confirm the face position is within range
  Each pose dimension is between -180 to 180 degress
  '''
  pose = user_face['Pose']
  for dimension in ['Pitch','Roll','Yaw']:
    if not valid_pose_value(pose[dimension]):
      raise InvalidPoseDetectedException(dimension)

  '''
  Do not permit users to wear sunglasses
  '''
  if user_face['Sunglasses']['Value']:
    raise SunglassesDetectedException()

  '''
  Return the valid faces...
  '''
  return {
    'FaceDetails': user_face
  }