Rename scipy.fftpack to scipy.fft

This submodule is considered legacy and will no longer receive updates. This could also mean it will be removed in future SciPy versions. New code should use scipy.fft.
https://docs.scipy.org/doc/scipy/reference/fftpack.html

README.rst

@@ -30,7 +30,7 @@ black & gray fractions (without position information).
 Installation
 ============
 
-Based on PIL/Pillow Image, numpy and scipy.fftpack (for pHash)
+Based on PIL/Pillow Image, numpy and scipy.fft (for pHash)
 Easy installation through `pypi`_::
 
 	pip install imagehash

imagehash/__init__.py

@@ -269,11 +269,11 @@ def phash(image, hash_size=8, highfreq_factor=4):
 	if hash_size < 2:
 		raise ValueError('Hash size must be greater than or equal to 2')
 
-	import scipy.fftpack
+	import scipy.fft
 	img_size = hash_size * highfreq_factor
 	image = image.convert('L').resize((img_size, img_size), ANTIALIAS)
 	pixels = numpy.asarray(image)
-	dct = scipy.fftpack.dct(scipy.fftpack.dct(pixels, axis=0), axis=1)
+	dct = scipy.fft.dct(scipy.fft.dct(pixels, axis=0), axis=1)
 	dctlowfreq = dct[:hash_size, :hash_size]
 	med = numpy.median(dctlowfreq)
 	diff = dctlowfreq > med
@@ -289,11 +289,11 @@ def phash_simple(image, hash_size=8, highfreq_factor=4):
 
 	@image must be a PIL instance.
 	"""
-	import scipy.fftpack
+	import scipy.fft
 	img_size = hash_size * highfreq_factor
 	image = image.convert('L').resize((img_size, img_size), ANTIALIAS)
 	pixels = numpy.asarray(image)
-	dct = scipy.fftpack.dct(pixels)
+	dct = scipy.fft.dct(pixels)
 	dctlowfreq = dct[:hash_size, 1:hash_size + 1]
 	avg = dctlowfreq.mean()
 	diff = dctlowfreq > avg