image processing - Python AttributeError: 'list' object has no attribute 'convert' -


i got code answer question paul here trying learn code, got following error when trying run it. had google around , found no solution it. know how should write around it? sorry still new programming

restart: c:/users/310293649/appdata/local/programs/python/python36/equalize.py  traceback (most recent call last):   file "c:/users/310293649/appdata/local/programs/python/python36/equalize.py", line 24, in <module>             lut = equalize(im.histogram())    file "c:/users/310293649/appdata/local/programs/python/python36/equalize.py", line 6, in equalize             h = im.convert("l").histogram()  attributeerror: 'list' object has no attribute 'convert'

here code.

import operator pil import image functools import reduce  def equalize(im):     h = im.convert("l").histogram()     lut = []     b in range(0, len(h), 256):         # step size         step = reduce(operator.add, h[b:b+256]) / 255         # create equalization lookup table         n = 0         in range(256):             lut.append(n / step)             n = n + h[i+b]     # map image through lookup table     return im.point(lut*3)  if __name__ == "__main__":      im = image.open(r'r:\temp\alignedphoto_in_png\aligned_img_1789.png')      # calculate lookup table     lut = equalize(im.histogram())      # map image through lookup table     im = im.point(lut)     im.show()


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