您可以执行以下操作：
class MyModel(peewee.Model):
def __str__(self):
r = {}
for k in self._data.keys():
try:
r[k] = str(getattr(self, k))
except:
r[k] = json.dumps(getattr(self, k))
return str(r)
class User(MyModel):
email = CharField()
status = CharField(default="enabled")
firstname = CharField()
lastname = CharField()
class Meta:
database = db
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