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Start your free trialJames N
17,864 Pointsnot getting error when supposed to LOL
on the video: "Queries are your friend" for the Python course: "Using databases in python", i'm not getting an error when i'm supposed to! the teacher said that the first time the program is ran, at 03:59, it works fine, followed by, the second time, errors popping up. no errors are popping up for me! here's my code:
from peewee import *
db = SqliteDatabase("students.db")
class Student(Model):
username = CharField(max_length=255, unique = True)
points = IntegerField(default=0)
class Meta:
databse = db
students = [{"username": "kennethlove",
"points": 4888},
{"username": "jamesn",
"points": 12999},
{"username": "bobthezombie",
"points": 0}]
def add_students():
for student in students:
Student.create(username=student["username"],
points=student["points"])
if __name__ == "__main__":
db.connect()
db.create_tables([Student], safe=True)
db.close()
and my output:
treehouse:~/workspace$ python students.py
treehouse:~/workspace$ python students.py
treehouse:~/workspace$ python students.py
treehouse:~/workspace$ python students.py
treehouse:~/workspace$
as you can see, i ran this a few times. thanks for your help!
1 Answer
James N
17,864 Pointsoh! i think i fixed it! all i did, was forget to call add_students()
but i fixed it!
i fixed it later on in the video so i didn't get any errors on uniqueness.
here's my UPDATED code:
from peewee import *
db = SqliteDatabase("students.db")
class Student(Model):
username = CharField(max_length=255, unique = True)
points = IntegerField(default=0)
class Meta:
databse = db
students = [{"username": "kennethlove",
"points": 4888},
{"username": "jamesn",
"points": 12999},
{"username": "bobthezombie",
"points": 0}]
def add_students():
for student in students:
try: #added for course
Student.create(username=student["username"],
points=student["points"])
except IntegrityError: #added for course
student_record = Student.get(username=student["username"]) #added for course
student_record.points = student["points"] #added for course
student_record.save() #added for course
if __name__ == "__main__":
db.connect()
db.create_tables([Student], safe=True)
add_students() #fixed!
db.close()