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suriyadeepan/custom_sort2.py

Created August 29, 2016 06:33
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Sort a list based on more than one attribute
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custom_sort2.py
lst = [ 'file', 'if', 'hat', 'zoltan', 'calculator', 'cup', 'pocket', 'symbolic', 'I', 'attributes' ]
sorted_lst1 = sorted(lst, key=len)
print(sorted_lst1)
## OUTPUT : ['I', 'if', 'hat', 'cup', 'file', 'zoltan', 'pocket', 'symbolic', 'calculator', 'attributes']
sorted_lst2 = sorted(lst, key=lambda item : (len(item),item[0]) )
print(sorted_lst2)
## OUTPUT : ['I', 'if', 'cup', 'hat', 'file', 'pocket', 'zoltan', 'symbolic', 'attributes', 'calculator']
# alternative to lambda
def len_alpha(item):
return ( len(item), item[0] )
sorted_lst3 = sorted(lst, key = len_alpha)
# compare sorted_lst2 and sorted_lst3
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