Assignment to invalid type

[balderman1]

I try to convert all values of a FlatterDict to strings.
The email field caused an exception.

See below

data = {
    "x": "12",
    "other": "MLL",
    "channel": 33,
    "language": "EN",
    "email": [
        "jack@ecme.com"
    ]
}

flat = flatdict.FlatterDict(data)

for k in flat.keys():
    flat[k] = str(flat[k])

Error:

  File "C:\dev\tools\python371\lib\site-packages\flatdict.py", line 416, in __setitem__
    pk, self._delimiter, ck))
TypeError: Assignment to invalid type for key email:0

[mileslucas]

I'm also encountering this issue, it seems to happen only for list original types

Specifically this code:

flatdict/flatdict.py

Lines 408 to 418 in f861866

	if getattr(self._values[pk], 'original_type',
	None) in self._ARRAYS:
	try:
	k, cck = ck.split(self._delimiter, 1)
	int(k)
	except ValueError:
	raise TypeError(
	'Assignment to invalid type for key {}{}{}'.format(
	pk, self._delimiter, ck))
	self._values[pk][k][cck] = value
	return

L411 will fail because it is trying to split e.g.,

# key = "email:0" ->
a, b = "0".split(':', 1)

It seems like there either needs to be an extra check for a delimiter or not do the second split.