sqlite3 error: You did not supply a value for binding 1

Question

def save():
    global editor
    conn = sqlite3.connect(\'address_book.db\')

    c = conn.cursor()

    recordID = delete_bo         


        

Answer 1

To avoid the situation reported as https://bugs.python.org/issue41638 i am using a wrapper. See also python sqlite insert named parameters or null for the solution of the more general problem on how to store dicts with different sets of keys which need to be mapped to different colums.

def testBindingError(self):
        '''
        test list of Records with incomplete record leading to
        "You did not supply a value for binding 2"
        see https://bugs.python.org/issue41638
        '''
        listOfRecords=[{'name':'Pikachu', 'type':'Electric'},{'name':'Raichu' }]
        for executeMany in [True,False]:
            try:
                self.checkListOfRecords(listOfRecords,'Pokemon','name',executeMany=executeMany)
                self.fail("There should be an exception")
            except Exception as ex:
                if self.debug:
                    print(str(ex))
                self.assertTrue('no value supplied for column' in str(ex)) 

which leads to:

executeMany:

INSERT INTO Pokemon (name,type) values (:name,:type)
failed: no value supplied for column 'type'

no executeMany:

INSERT INTO Pokemon (name,type) values (:name,:type)
failed: no value supplied for column 'type'
record  #2={'name': 'Raichu'}

The wrapper code is:

def store(self,listOfRecords,entityInfo,executeMany=False):
        '''
        store the given list of records based on the given entityInfo
        
        Args:
          
           listOfRecords(list): the list of Dicts to be stored
           entityInfo(EntityInfo): the meta data to be used for storing
        '''
        insertCmd=entityInfo.insertCmd
        try:
            if executeMany:
                self.c.executemany(insertCmd,listOfRecords)
            else:
                index=0
                for record in listOfRecords:
                    index+=1
                    self.c.execute(insertCmd,record)
            self.c.commit()
        except sqlite3.ProgrammingError as pe:
            msg=pe.args[0]
            if "You did not supply a value for binding" in msg:
                columnIndex=int(re.findall(r'\d+',msg)[0])
                columnName=list(entityInfo.typeMap.keys())[columnIndex-1]
                debugInfo=""
                if not executeMany:
                    if self.errorDebug:
                        debugInfo="\nrecord  #%d=%s" % (index,repr(record))
                raise Exception("%s\nfailed: no value supplied for column '%s'%s" % (insertCmd,columnName,debugInfo))
            else:
                raise pe

for more details see storage/sql.py and tests/testSqlite3.py