getSQL.py

import pandas as pd            
def getSQL(sql_query, 
           place_holder_str,
           replace_place_holder_with,
           database_con):
    '''
    Args:
        sql_query: sql query file 
        place_holder_str: string in the original sql query that is to be replaced
        replace_place_holder_with: real values that should be put in 
        database_con: connection to the database 
    '''
    
    sqlFile = open(sql_query, 'r')
    sqlQuery = sqlFile.read()
    
    sqlQuery = sqlQuery.replace(place_holder_str, replace_place_holder_with)    
             
    df = pd.read_sql_query(sqlQuery, database_con)          
                
    database_con.close()

    return df