Check dict items [dict-item]

When constructing a dictionary using {key: value, …} or dict(key=value, …),mypy checks that each key and value is compatible with the dictionary type that isinferred from the surrounding context.

Example:

from typing import Dict
 
# Error: Dict entry 0 has incompatible type "str": "str"; expected "str": "int"  [dict-item]
d: Dict[str, int] = {'key': 'value'}