Unpacking multiple entries as a string for `fields` in Python 3

Question

I'm making a helper function file to interact with a local database to allow interaction with the database in a programmatic way.

I have 2 functions:

import pymysql
def conn_db(host, port, user, password, database):
    #conn = pymysql.connect(host='localhost', port=3306, user='root', passwd='', db='mysql')
    conn = pymysql.connect(host=host, port=port, user=user, passwd=password, db=database)
    dbcursor = conn.cursor()
    return dbcursor

def select_from_table(fields, table):
    #dbcursor.execute(SELECT <fields> from table)
    dbcursor.execute()   #STUCK HERE

I'm wondering how I can allow multiple entries for the fields parameter in select_from_table which would represent columns in the backend database (see STUCK HERE)

for instance, an example of a use of this function I am trying to achieve is: I want to execute using select_from_table(): select_from_table([id, name, address], person) where it'd be selecting both the id, name, and address from the person table.

Thanks

Answer 1

You are simply trying to use *args. You can do the following:

def select_from_table(table, *fields):
    query = "SELECT {} FROM {}".format(",".join(fields), table)
    dbcursor.execute(query)

For more information on *args and **kwargs check out this question here *args and **kwargs?