Python Programming Training Certification
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100 Assignments
Instructor Led online Training
50 LMS Access
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Course Overview
Python is one of the world’s top programming languages used today and Python training has become the most popular training across individuals. Training Basket’s Python Training & Certification course covers basic and advanced Python concepts and how to apply them in real-world applications.Python is a flexible and powerful open-source language that is easy to learn and consists of powerful libraries for data analysis and manipulation. Our Python training course content is curated by experts as per the standard Industry curriculum. The curriculum, coding challenges and real-life problems cover data operations in Python, strings, conditional statements, error handling, shell scripting, web scraping and the commonly used Python web framework Django. Take this Python training and certification course and become job-ready now.
Database Connection
In this section of the tutorial, we will discuss the steps to connect the python application to the database.
There are the following steps to connect a python application to our database.
- Import mysql.connector module
- Create the connection object.
- Create the cursor object
- Execute the query
Creating the connection
To create a connection between the MySQL database and the python application, the connect() method of mysql.connector module is used.
Pass the database details like HostName, username, and the database password in the method call. The method returns the connection object.
The syntax to use the connect() is given below.
- Connection-Object= mysql.connector.connect(host = <host-name> , user = <username> , passwd = <password> )
Consider the following example.
Example
-
import mysql.connector
#Create the connection object
myconn = mysql.connector.connect(host = “localhost”, user = “root”,passwd = “google”)#printing the connection object
print(myconn)
Output:
- <mysql.connector.connection.MySQLConnection object at 0x7fb142edd780>
Here, we must notice that we can specify the database name in the connect() method if we want to connect to a specific database.
Example
-
import mysql.connector
#Create the connection object
myconn = mysql.connector.connect(host = “localhost”, user = “root”,passwd = “google”, database = “mydb”)#printing the connection object
print(myconn)
Output:
- <mysql.connector.connection.MySQLConnection object at 0x7ff64aa3d7b8>
Creating a cursor object
The cursor object can be defined as an abstraction specified in the Python DB-API 2.0. It facilitates us to have multiple separate working environments through the same connection to the database. We can create the cursor object by calling the ‘cursor’ function of the connection object. The cursor object is an important aspect of executing queries to the databases.
The syntax to create the cursor object is given below.
- <my_cur> = conn.cursor()
Example
-
import mysql.connector
#Create the connection object
myconn = mysql.connector.connect(host = “localhost”, user = “root”,passwd = “google”, database = “mydb”)#printing the connection object
print(myconn)#creating the cursor object
cur = myconn.cursor()print(cur)
Output:
-
<mysql.connector.connection.MySQLConnection object at 0x7faa17a15748>
MySQLCursor: (Nothing executed yet)
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