[Python] Python Warning - Expected type 'Union[Integral, slice]', got 'str' instead

My code below in python is giving me a warning on the line:

some_new_object['someVar'] = cd['someVar']


The warning is

Expected type 'Union[Integral, slice]', got 'str' instead


Code:

def some_object():
return {
'someId': 0,
'someVar' : ''
}

def warn_test(in_list):
try:
new_list = []
some_new_object = some_object()

for cd in in_list:
if cd['someVar']:
new_list.append(cd)

for cd in new_list:
some_new_object['someVar'] = cd['someVar']
in_list.append(some_new_object.copy())

return in_list
except Exception:
print 'baaa'

#Main Program
new_obj = some_object()
new_obj['someId'] = 1
new_obj['someVar'] = 'Next'

new_obj2 = some_object()
new_obj2['someId'] = 1
new_obj2['someVar'] = None

new_list = []
new_list.append(new_obj)
new_list.append(new_obj2)

out_list = warn_test(new_list)
for obj in out_list:
print obj


If I change the function warn_test to this:

def warn_test(in_list):
try:
new_list = []
some_new_object = some_object()

for cd in in_list:
if cd['someVar']:
some_new_object['someVar'] = cd['someVar']
new_list.append(some_new_object.copy())

for cd in new_list:
in_list.append(cd)

return in_list
except Exception:
print 'baaa'


It gives me no warning.

Can someone help me to understand why I get the warning, and how I can access the cd['someVar'] in the second iteration without getting a warning?

I know this code is weird, I need this for a project I am working on, I made this test to share here, but it gives me the same Warning so a solution for this will fix it in my system. (No warnings is one of the Must Haves for this system)

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