Insert lis of values into JIRA customfield of "select list" type using Python code

We have selectList( single select) cusotm filed on JIRA, which we wanted to show list of below values coming form the Pyhton script.

['10.1.25.83', '10.1.32.14', '10.1.31.38', '10.1.32.16', '10.1.32.17']

Python code snippet:-

code:-
 
p = "//vs_ldc_xxxxx/SSG/ZFSA/UPP1/Setups/Releas/Main Systemsup" // This shared path giving us all the above list values.
print(p)
out = os.listdir(p)
arr = []
for i in out:
    arr.append(i[4:])
print(arr)

"customfield_10900": [arr]   // Here trying to update values in JIRA filed 

But gives error.

    raise JIRAError(
jira.exceptions.JIRAError: JiraError HTTP 400 url: http://IPaddress/rest/api/2/issue/11628
    text: Could not find valid 'id' or 'value' in the Parent Option object.

-------------

Then I tried in below ways to update the JITA feild vaues in different ways but still no luck.

1)-->"customfield_10900": [arr]

2)-->issue.update(fields={'customfield_10900': '1.1.2.3'})
3)-->issue.update(fields={'customfield_10900': [{'value':'1.1.2.3'}]})
4)-->issue.update(fields={'customfield_10900': [{'value': '10.1.2.3'}]})
5)-->issue.update(fields={'customfield_10900': [{'value':'1.1.2.3'},{'value':'1.1.2.4'},{'value':'1.1.2.5'}]})

Please help me to fix this issue. 

Thank you in advance,

Dev G