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comparison python/utils.py @ 733:c35e4a4b199d dev

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sortbylength
author Nicolas Saunier <nicolas.saunier@polymtl.ca>
date Tue, 11 Aug 2015 12:06:10 -0400
parents 8d99a9e16644
children fb60b54e1041
comparison
equal deleted inserted replaced
732:ad31520e81b5 733:c35e4a4b199d
230 D = {} 230 D = {}
231 for x, y in zip(X,Y): 231 for x, y in zip(X,Y):
232 D[x]=y 232 D[x]=y
233 xsorted = sorted(D.keys()) 233 xsorted = sorted(D.keys())
234 return xsorted, [D[x] for x in xsorted] 234 return xsorted, [D[x] for x in xsorted]
235
236 def compareLengthForSort(i, j):
237 if len(i) < len(j):
238 return -1
239 elif len(i) == len(j):
240 return 0
241 else:
242 return 1
243
244 def sortByLength(instances, reverse = False):
245 '''Returns a new list with the instances sorted by length (method __len__)
246 reverse is passed to sorted'''
247 return sorted(instances, cmp = compareLengthForSort, reverse = reverse)
235 248
236 def ceilDecimals(v, nDecimals): 249 def ceilDecimals(v, nDecimals):
237 '''Rounds the number at the nth decimal 250 '''Rounds the number at the nth decimal
238 eg 1.23 at 0 decimal is 2, at 1 decimal is 1.3''' 251 eg 1.23 at 0 decimal is 2, at 1 decimal is 1.3'''
239 tens = 10**nDecimals 252 tens = 10**nDecimals