I am a beginner in python. I am trying to connect to a database and match user entered values.
if staff==<user entered value>and paper==<user entered value>:
test=db.staff.find({"staff":<user entered value>,"paper":<user entered value>})
print(test.get('staff'))
print(test.get('paper'))
if test has no value,I get error when the database returns no value
When your db.staff.find_one({"staff":<user entered value>,"paper":<user entered value>}) doesn't match anything in your database the value of test will be None. And a None object does not have a .get() method.
You may need to use an if statement to check it before running .get() method
.count to check if your query returns any result..find returns an instance of Cursor so you have to loop over your query result.
if staff==<user entered value>and paper==<user entered value>:
test = db.staff.find({"staff":<user entered value>,"paper":<user entered value>})
if(test.count()):
for doc in test:
print(test['staff'])
print(test['paper'])
If staff and paper are unique in your collection use the find_one method.
if staff==<user entered value>and paper==<user entered value>:
test = db.staff.find_one({"staff":<user entered value>,"paper":<user entered value>})
if(test):
print(test['staff'])
print(test['paper'])