Peewee - Retrieving Row Tuples/Dictionaries

It is possible to iterate over the resultset without creating model instances. This may be achieved by using the following −

• tuples() method.

• dicts() method.

Example

To return data of fields in SELECT query as collection of tuples, use tuples() method.

qry=Contacts.select(Contacts.City, fn.Count(Contacts.City).alias('count'))
   .group_by(Contacts.City).tuples()
lst=[]
for q in qry:
   lst.append(q)
print (lst)

Output

The output is given below −

[
   ('Chennai', 1), 
   ('Delhi', 2), 
   ('Indore', 1), 
   ('Mumbai', 1), 
   ('Nagpur', 1), 
   ('Nasik', 3), 
   ('Pune', 1)
]

Example

To obtain collection of dictionary objects −

qs=Brand.select().join(Item).dicts()
lst=[]
for q in qs:
   lst.append(q)
print (lst)

Output

The output is stated below −

[
   {'id': 1, 'brandname': 'Dell', 'item': 1}, 
   {'id': 2, 'brandname': 'Epson', 'item': 2}, 
   {'id': 3, 'brandname': 'HP', 'item': 1}, 
   {'id': 4, 'brandname': 'iBall', 'item': 3},
   {'id': 5, 'brandname': 'Sharp', 'item': 2}
]