add generate lable list script

dataset/generate_flower_list.py

+import scipy.io
+import numpy as np
+import os
+import sys
+
+"""
+Usage: python generate_flower_list.py ./jpg train > train_list.txt
+       python generate_flower_list.py ./jpg valid > val_list.txt
+"""
+
+
+data_path = sys.argv[1]
+imagelabels_path='./imagelabels.mat'
+setid_path='./setid.mat'
+
+"""
+imagelabel.mat
+jpg_name   1     2     3 ... 
+label      32    12    66 ... 
+"""
+labels = scipy.io.loadmat(imagelabels_path)
+labels = np.array(labels['labels'][0])
+setid = scipy.io.loadmat(setid_path)
+
+d = {}
+d['train'] = np.array(setid['trnid'][0])
+d['valid'] = np.array(setid['valid'][0])
+d['test']=np.array(setid['tstid'][0])
+
+"""
+setid.mat
+jpg_name  24 6 100 65 32 ...
+label     4 ...
+"""
+
+
+for id in d[sys.argv[2]]:
+   message = str(data_path)+"/image_"+str(id).zfill(5)+" "+str(labels[id-1])
+   print(message)