==========================================================
def sort_tuple_list_by_2nd_elements(alist):
"""
Return a list of 2-element tuples, with the list
sorted by the 2nd element of the tuples.
"""
e0_list = []
e1_list = []
for e in alist:
e0_list.append(e[0])
e1_list.append(e[1])
e1_list_sorted = sorted(e1_list)
alist_sorted_by_e1 = []
for i, e0 in enumerate(e1_list_sorted):
alist_sorted_by_e1.append((e0_list[i], e0))
return alist_sorted_by_e1
if __name__ == '__main__':
colors = [('khaki4', (139, 134, 78)), ('antiquewhite', (250, 235, 215)), ('cyan3', (0, 205, 205)), ('antiquewhite1', (238, 223, 204)), ('dodgerblue4', (16, 78, 139)), ('antiquewhite4', (139, 131, 120)), ]
print sort_tuple_list_by_2nd_elements(colors)
"""
OUTPUT:
[('khaki4', (0, 205, 205)), ('antiquewhite', (16, 78, 139)), ('cyan3', (139, 131, 120)), ('antiquewhite1', (139, 134, 78)), ('dodgerblue4', (238, 223, 204)), ('antiquewhite4', (250, 235, 215))]
"""
==================================================================
It works, but did I really need to roll my own? I think I wouldn't have had to if I understood what arguments to use for either of the built-ins, sort() or sorted(). Can someone give me a clue?
BTW what list comprehension would have accomplished the same thing as my function?
Thanks,
Dick Moores
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