Sub-sort after sort

[keeftm]

Hello, I have been sorting a list of dicts using the following
function:

result_rs = sorted(unsort_rs, key=itemgetter(orderby))

and this works fine. Now I am looking to perform a subsort as well.
For example, I have this:

test = [{'name': 'John Smith', 'location': 'CA',},{'name': 'John
Smith', 'location': 'AZ',},]

I would want to sort by name first, then sub sort by location. Any
ideas? Thanks!

 

[KeefTM]

Hello, I have been sorting a list of dicts using the following
function:

result_rs = sorted(unsort_rs, key=itemgetter(orderby))

and this works fine. Now I am looking to perform a subsort as well.
For example, I have this:

test = [{'name': 'John Smith', 'location': 'CA',},{'name': 'John
Smith', 'location': 'AZ',},]

I would want to sort by name first, then sub sort by location. Any
ideas? Thanks!

Well, I found a way to do it. Just create a new key and value that is
a combination of two other values, like this:

test = [{'name': 'John Smith', 'location': 'AZ','sort':'John SmithAZ'},
{'name': 'John

Smith', 'location': 'CA', 'sort':'John SmithCA'},]

Not pretty in the slightest, but it works.

 

[Andrew Koenig]

I would want to sort by name first, then sub sort by location. Any
ideas? Thanks!

In Python 2.3 and later, sorting is stable -- so you can sort successively
in reverse order. In other words, sort the list by location, then sort the
sorted result again by name and you should get what you want.

 

[KeefTM]

In Python 2.3 and later, sorting is stable -- so you can sort successively
in reverse order. In other words, sort the list by location, then sort the
sorted result again by name and you should get what you want.

I'm using Python 2.4 and I thought that was the first thing I tried.
Let me verify. Thanks!

 

[KeefTM]

In Python 2.3 and later, sorting is stable -- so you can sort successively
in reverse order. In other words, sort the list by location, then sort the
sorted result again by name and you should get what you want.

That was it. I must of made a mistake when I tried it before. Thanks!

 

[Paul Hankin]

Hello, I have been sorting a list of dicts using the following
function:

result_rs = sorted(unsort_rs, key=itemgetter(orderby))

and this works fine. Now I am looking to perform a subsort as well.
For example, I have this:

test = [{'name': 'John Smith', 'location': 'CA',},{'name': 'John
Smith', 'location': 'AZ',},]

I would want to sort by name first, then sub sort by location. Any
ideas? Thanks!

test.sort(key=lambda xx['name'], x['location']))