example snippet of building up filenames and loading images dynamically

dynamic-load.py

walkRightImageCodes = ['A1', 'A2', 'A7', 'Fb9', 'Bx5']
walkRightImageData = []

# easy to read version
for code in walkRightImageCodes:
	filename = "%s.png" % code
  imageData = pygame.image.load(filename).convert()
	walkRightImageData.append(imageData)

  
# short version
walkRightImageData = [ pygame.image.load("%s.png" % code).convert() for code in imageCodes ]