KeyError while trying to connect to database using pymssql

Question

The below code tries to connect to a mssql database using pymssql. I have a CSV file and I am trying to push all the rows into a single data table in the mssql database. I am getting a 'KeyError' when I try to execute the code after opening the CSV file.

import csv
import pymssql
conn = pymssql.connect(host="host name", 
                       database="dbname", 
                       user = "username",
                       password = "password")

cursor = conn.cursor()
if(conn):
    print("True")
else:
    print("False")

with open ('path to csv file', 'r') as f:
    reader = csv.reader(f)
    columns = next(reader) 
    query = "INSERT INTO Marketing({'URL', 'Domain_name', 'Downloadables', 'Text_without_javascript', 'Downloadable_Link'}) VALUES ({%s,%s,%s,%s,%s})"
    query = query.format(','.join('[' + x + ']' for x in columns), ','.join('?' * len(columns)))
    cursor = conn.cursor()
    for data in reader:
        cursor.execute(query, tuple(data))
    cursor.commit()

The below is the error that I get:

KeyError: "'URL', 'Domain_name', 'Downloadables', 'Text_without_javascript', 'Downloadable_Link'"

Using to_sql

file_path = "path to csv"
engine = create_engine("mssql://user:password@host/database") 

df = pd.read_csv(file_path, encoding  = 'latin')
df.to_sql(name='Marketing',con=engine,if_exists='append')

Output:

InterfaceError: (pyodbc.InterfaceError) ('IM002', '[IM002] [Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified (0) (SQLDriverConnect)')

Answer 1

I tried everything, from converting the parameters which were being passed to a tuple, passing it as is, but didn't help. Below is the code that helped me fix the issue:

with open ('path to csv file', 'r') as f:
    for row in f:
        reader = csv.reader(f)
#        print(reader)
        columns = next(reader) 
#        print(columns)
        cursor = conn.cursor()
        for data in reader:
#            print(data)
            data = tuple(data)
#            print(data)
            query = ("INSERT INTO Marketing(URL, Domain_name, Downloadables, Text_without_javascript, Downloadable_Link) VALUES (%s,%s,%s,%s,%s)")
            parameters = data
#            query = query.format(','.join('?' * len(columns)))
            cursor.execute(query, parameters)
        conn.commit()

Note: The connecting to the database part remains as in the question.