Check out example codes for "python and mysql connectivity". It will help you in understanding the concepts better.

Code Example 1

import pymysql

############### CONFIGURE THIS ###################
# Open database connection
db = pymysql.connect("database_host","username","password","database_name")
##################################################

# prepare a cursor object using cursor() method
cursor = db.cursor()

# execute SQL query using execute() method.
cursor.execute("SELECT VERSION()")

# Fetch a single row using fetchone() method.
data = cursor.fetchone()
print ("Database version : {0}".format(data))

# disconnect from server
db.close()

Code Example 2

import mysql.connector
mydb = mysql.connector.connect(
  host="localhost",
  user="yourusername",
  password="yourpassword",
  port = 8888, #for Mamp users
  database='whatever db you want'
)
print(mydb)

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