sorting - Sort alphanumeric list -

i'm trying sort list numbers found in each element.

revision_type = [('100k revision', '50k revision', '25k revision')] 

this i've come far keep getting error:

attributeerror: 'tuple' object has no attribute 'partition' revision_sorted = sorted(revision_type, key=lambda s: (int(s.partition(' ')[0][:-1]))) 

i want list revision_sorted be:

[('25k revision', '50k revision', '100k revision')] 

been messing hours, appreciated.

i think close. revision_type list has tuple. so, have extract first element , pass sorted function.

revision_type = [('100k revision', '50k revision', '25k revision')] revision_sorted = [tuple(sorted(revision_type[0], key=lambda s: (int(s.partition(' ')[0][:-1]))))] print revision_sorted 

output

[('25k revision', '50k revision', '100k revision')]