Currently this code:
d = {"key": "value"}
for key, value in d:
pass
produces this error:
ValueError: too many values to unpack (expected 2)
I suggest that the error message should also have:
1. The name of the type of the unpacked value
2. The length of the unpacked value, if it exists and (to not execute arbitrary
__len__ implementations) if the type belongs to a safe subset, e.g. only
builtin types.
Then the error message could be:
ValueError: too many values to unpack (expected 2, found 3) from object of type
str
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