Check types in assignment statement [assignment]

Mypy checks that the assigned expression is compatible with theassignment target (or targets).

Example:

class Resource:
    def __init__(self, name: str) -> None:
        self.name = name
 
r = Resource('A')
 
r.name = 'B'  # OK
 
# Error: Incompatible types in assignment (expression has type "int",
#        variable has type "str")  [assignment]
r.name = 5