mongoengine.fields.ImproperlyConfigured: PIL library was not found

问题

When I try to import a MongoEngine class which has an ImageField, an error says:

mongoengine.fields.ImproperlyConfigured: PIL library was not found

My class structure is like this:

class TrafficSign(Document):
    name = StringField()
    image = ImageField()
    type = StringField()
    desc = StringField()
    source = StringField()

Whats the problem?

回答1:

You need to install Pillow, which provides the PIL module. sudo pip install Pillow (drop the sudo if on Windows) ought to do it.

来源：https://stackoverflow.com/questions/25811805/mongoengine-fields-improperlyconfigured-pil-library-was-not-found