Python MySQL – Create Database

• Difficulty Level : Medium
• Last Updated : 04 Jul, 2021

Python Database API ( Application Program Interface ) is the Database interface for the standard Python. This standard is adhered to by most Python Database interfaces. There are various Database servers supported by Python Database such as MySQL, GadFly, mSQL, PostgreSQL, Microsoft SQL Server 2000, Informix, Interbase, Oracle, Sybase etc. To connect with MySQL database server from Python, we need to import the mysql.connector interface.
Syntax: 
 

CREATE DATABASE DATABASE_NAME

Example:
 

• Python

# importing required libraries import mysql.connector   dataBase = mysql.connector.connect(   host ="localhost",   user ="user",   passwd ="gfg" )   # preparing a cursor object cursorObject = dataBase.cursor()   # creating database cursorObject.execute("CREATE DATABASE geeks4geeks")

Output:
 

The above program illustrates the creation of MySQL database geeks4geeks in which host-name is localhost, the username is user and password is gfg.
Let’s suppose we want to create a table in the database, then we need to connect to a database. Below is a program to create a table in the geeks4geeks database which was created in the above program.
 

• Python

# importing required library import mysql.connector   # connecting to the database dataBase = mysql.connector.connect(                      host = "localhost",                      user = "user",                      passwd = "gfg",                      database = "geeks4geeks" )    # preparing a cursor object cursorObject = dataBase.cursor()   # creating table  studentRecord = """CREATE TABLE STUDENT (                    NAME  VARCHAR(20) NOT NULL,                    BRANCH VARCHAR(50),                    ROLL INT NOT NULL,                    SECTION VARCHAR(5),                    AGE INT                    )"""   # table created cursorObject.execute(studentRecord)    # disconnecting from server dataBase.close()

Output:
 

Sent data from client to server (ESP8266 as client)

ESP8266 IoT Client /** PostHTTPClient.ino Created on: 21.11.2016 */ #include <ESP8266WiFi.h> #include <ESP8266HTTPClient.h> /* this can be run with an emulated server on host: cd esp8266-core-root-dir cd tests/host make ../../libraries/ESP8266WebServer/examples/PostServer/PostServer bin/PostServer/PostServer then put your PC's IP address in SERVER_IP below, port 9080 (instead of default 80): */ //#define SERVER_IP "10.0.1.7:9080" // PC address with emulation on host #define SERVER_IP "192.168.77.102:5000" #ifndef STASSID #define STASSID "Yasin Arafat" #define STAPSK "yasinarafat931300" #endif void setup() { pinMode(A0, INPUT); Serial.begin(115200); Serial.println(); Serial.println(); Serial.println(); WiFi.begin(STASSID, STAPSK); while (WiFi.status() != WL_CONNECTED) { delay(500); Serial.print("."); } Serial.println(""); Serial.print("Connected! IP address: "); Serial.println(WiFi.localIP()); } void loop() { // wait for WiFi connection if ((WiFi.status() == WL_CONNECTED)) { WiFiClient client; HTTPClient http; Serial.print("[HTTP] begin...\n"); // configure traged server and url http.begin(client, "http://" SERVER_IP "/client"); //HTTP http.addHeader("Content-Type", "application/text"); Serial.print("[HTTP] POST...\n"); // start connection and send HTTP header and body int input = analogRead(A0); char data[10]; sprintf(data, "%d", input); int httpCode = http.POST(data); // httpCode will be negative on error if (httpCode > 0) { // HTTP header has been send and Server response header has been handled Serial.printf("[HTTP] POST... code: %d\n", httpCode); // file found at server if (httpCode == HTTP_CODE_OK) { const String& payload = http.getString(); Serial.println("received payload:\n<<"); Serial.println(payload); Serial.println(">>"); } } else { Serial.printf("[HTTP] POST... failed, error: %s\n", http.errorToString(httpCode).c_str()); } http.end(); } delay(1000); }

FLASK SERVER

from flask import Flask, request, render_template app = Flask(__name__) result = b'null' @app.route("/client", methods = ['GET','POST']) def client(): global result result = request.data return result @app.route("/") def index(): global result return render_template("index.html", data = result.decode("utf-8")) if __name__ == '__main__': app.run(host='0.0.0.0', port=5000)

index.html

<html> <body> {{data}} </body> </html>