mysql example gps lurker (snippet)

Python mysql example 'gps lurker'

Functions in program:

• def getNearest(t, lat, lon, number):

Modules used in program:

• import mysql.connector

python gps lurker

Python mysql example: gps lurker

#!/usr/bin/python

import mysql.connector
mydb = mysql.connector.connect(
  host="127.0.0.1",
  user="root",
  passwd="mypass123",
  database="database"
)
mycursor = mydb.cursor()

def getNearest(t, lat, lon, number):
    sf = float(3.14159 / 180) # radian unit
    val = (sf, lat, sf, sf, lat, sf, lon, sf)
    if (t == "village"):
        # Formula 1
        sql = "SELECT * FROM village ORDER BY ACOS(SIN(lat * %s) *SIN(%s * %s) + COS(lat * %s) * COS(%s * %s) * COS( (lon-%s) * %s )) ASC LIMIT 5"
        mycursor.execute(sql, val)
        return mycursor.fetchall()
    else:
        return None

for x in getNearest("village", -6.895963, 107.6058035, 5):
    print(x)

print("=====================")

for x in getNearest("village", -6.9010772, 107.5991861, 5):
    print(x)

print("=====================")

for x in getNearest("village", -6.9060754, 107.5967033, 5):
    print(x)

print("=====================")

Python links

• Learn Python: https://pythonbasics.org/
• Python Tutorial: https://pythonprogramminglanguage.com