I want find min element of object by attribute in a list of object in Python-CodePudding

I want find min element of object (by days attribute) in a list of object in Python

from operator import attrgetter

lists = json.loads("["   data   "]")
print(lists)
maintenance_cycle = min(lists,key=lambda r: r.days)

console print :

[{'type': 'runtime', 'days': 1}]

error:

'dict' object has no attribute 'days'

CodePudding user response：

Accessing dictionary keys is not like accessing class methods

Try this code

maintenance_cycle = min(lists, key=lambda r: r['days'])

maintenance_cycle = min(lists, key=lambda r: r.get('days'))

Instead of

maintenance_cycle = min(lists,key=lambda r: r.days)

And tell me if its not working...