Sorting a List of Objects by an Attribute of the ObjectsCase-Insensitively

[Jason]

Hi folks--

Basically, I have a pressing need for a combination of 5.2 "Sorting a
List of Strings Case-Insensitively" & 5.3 "Sorting a List of Objects
by an Attribute of the Objects" from the Python Cookbook.

My first guess isn't working:

import operator
def sort_by_attr(se q, attr):
key=operator.at trgetter(attr)
key=str.lower
return sorted(seq, key)

....would much appreciate any guidance!

[Paddy]

Re: Sorting a List of Objects by an Attribute of the ObjectsCase-Insensitively

On Apr 9, 4:04 am, Jason <elgrandchig... @gmail.comwrote :

Hi folks--
>
Basically, I have a pressing need for a combination of 5.2 "Sorting a
List of Strings Case-Insensitively" & 5.3 "Sorting a List of Objects
by an Attribute of the Objects" from the Python Cookbook.
>
My first guess isn't working:
>
import operator
def sort_by_attr(se q, attr):
key=operator.at trgetter(attr)
key=str.lower
return sorted(seq, key)
>
...would much appreciate any guidance!

HiJason,
Try key= lambda x: x.attr.lower()
The above should calculate the key only once for the items to be
sorted rather than using cmp which calculates more than that.

- Paddy.

[Jason]

Re: Sorting a List of Objects by an Attribute of the ObjectsCase-Insensitively

Thanks so much everyone! That works great, & (presumably) is way
faster than the way I was doing it--