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'dict_items' object has no attribute 'sort' - Printable Version

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'dict_items' object has no attribute 'sort' - Calli - Jul-29-2022 

monthdays = {'Jan':31, 'Feb':28, 'Mar':31,
            'Apr':30, 'May':31, 'Jun':30,
            'Jul':31, 'Aug':31, 'Sep':30,
            'Oct':31, 'Nov':30, 'Dec':31}

months = monthdays.items()
months.sort(lambda f, s: cmp(f[1], s[1]))
for month, days in months:
    print("There are ",days," days in a ", month)
Error

Error:
Exception has occurred: AttributeError
'dict_items' object has no attribute 'sort'
  File "/home/Desktop/dictionaries.py", line 7, in <module>
    months.sort(lambda f, s: cmp(f[1], s[1]))
Objective get a list of tuple pairs using the items method

RE: 'dict_items' object has no attribute 'sort' - Gribouillis - Jul-29-2022

Use
months = list(monthdays.items())


RE: 'dict_items' object has no attribute 'sort' - Axel_Erfurt - Jul-29-2022

I don't know what you want to do, but months are always sorted

monthdays = {'Jan':31, 'Feb':28, 'Mar':31,
            'Apr':30, 'May':31, 'Jun':30,
            'Jul':31, 'Aug':31, 'Sep':30,
            'Oct':31, 'Nov':30, 'Dec':31}
    
for month in monthdays:
    print(f"There are {monthdays[month]} days in {month}")
Output:
There are 31 days in Jan
There are 28 days in Feb
There are 31 days in Mar
There are 30 days in Apr
There are 31 days in May
There are 30 days in Jun
There are 31 days in Jul
There are 31 days in Aug
There are 30 days in Sep
There are 31 days in Oct
There are 30 days in Nov
There are 31 days in Dec


RE: 'dict_items' object has no attribute 'sort' - Calli - Jul-29-2022

(Jul-29-2022, 09:10 PM)Gribouillis Wrote: Use
months = list(monthdays.items())

It's saying 
Error:
sort() takes no positional arguments


RE: 'dict_items' object has no attribute 'sort' - Gribouillis - Jul-29-2022

(Jul-29-2022, 09:12 PM)Calli Wrote: It's saying Error:sort() takes no positional arguments
Use
months = sorted(monthdays.items(), key=lambda p: p[1])


RE: 'dict_items' object has no attribute 'sort' - Calli - Jul-29-2022

(Jul-29-2022, 09:15 PM)Gribouillis Wrote:
(Jul-29-2022, 09:12 PM)Calli Wrote: It's saying Error:sort() takes no positional arguments
Use
months = sorted(monthdays.items(), key=lambda p: p[1])

Thank you so much works like charm now

RE: 'dict_items' object has no attribute 'sort' - Gribouillis - Jul-29-2022

(Jul-29-2022, 09:17 PM)Calli Wrote: Thank you so much works like charm now
A slightly more educated version:
from operator import itemgetter
months = sorted(monthdays.items(), key=itemgetter(1))