Bug 306213

users = dict()

def get_user(name):                                      # Return type of 'get_user' is shown as 'void',
    try:                                                 # it should be unsure(User, None) since it
        return users[name.lower()]                       # knows users is a dict of string : User.
    except KeyError:
        pass

    for user in users.values():                          # 'user' is shown as mixed when it should know
        if user.alias.match(name):                       # that values() returns an iterable of User.
            return user                                  # Further, the values() return type is shown
                                                         # as 'list of unknown'.
    return None

class User:
    def __init__(self, nick):
        self.nick = nick
        self._alias = None

        users[nick.lower()] = self

    def get_alias(self):
        return self._alias

    def set_alias(self, value):
        self._alias = re.compile(value, re.IGNORECASE)

    alias = property(get_alias, set_alias)

This turns out to be related to parsing order; if you move the class def above the function def things work (except for the values() tooltip being wrong about its return type, which needs a tweak).

Here is a reduced testcase:

users = dict()

def add():
    users[""] = ""
def get():
    dictvalues = users.values() # dictvalues is correctly marked as 'list of string'

# -------------

users = dict()

def get():
    dictvalues = users.values() # dictvalues is marked as 'list of mixed'
def add():
    users[""] = ""



Reproducible: Always