├── .DS_Store ├── README.md ├── mysqldemopython ├── .vscode │ └── settings.json └── db.py ├── servervsclientcursor ├── clientcur.py ├── insert1m.py └── servercur.py ├── splitimage ├── .vscode │ ├── launch.json │ └── settings.json ├── index.py ├── scott.jpg ├── scott_01_01.png ├── scott_01_02.png ├── scott_01_03.png ├── scott_01_04.png ├── scott_01_05.png ├── scott_01_06.png ├── scott_01_07.png ├── scott_01_08.png ├── scott_01_09.png ├── scott_01_10.png ├── scott_02_01.png ├── scott_02_02.png ├── scott_02_03.png ├── scott_02_04.png ├── scott_02_05.png ├── scott_02_06.png ├── scott_02_07.png ├── scott_02_08.png ├── scott_02_09.png ├── scott_02_10.png ├── scott_03_01.png ├── scott_03_02.png ├── scott_03_03.png ├── scott_03_04.png ├── scott_03_05.png ├── scott_03_06.png ├── scott_03_07.png ├── scott_03_08.png ├── scott_03_09.png ├── scott_03_10.png ├── scott_04_01.png ├── scott_04_02.png ├── scott_04_03.png ├── scott_04_04.png ├── scott_04_05.png ├── scott_04_06.png ├── scott_04_07.png ├── scott_04_08.png ├── scott_04_09.png ├── scott_04_10.png ├── scott_05_01.png ├── scott_05_02.png ├── scott_05_03.png ├── scott_05_04.png ├── scott_05_05.png ├── scott_05_06.png ├── scott_05_07.png ├── scott_05_08.png ├── scott_05_09.png ├── scott_05_10.png ├── scott_06_01.png ├── scott_06_02.png ├── scott_06_03.png ├── scott_06_04.png ├── scott_06_05.png ├── scott_06_06.png ├── scott_06_07.png ├── scott_06_08.png ├── scott_06_09.png ├── scott_06_10.png ├── scott_07_01.png ├── scott_07_02.png ├── scott_07_03.png ├── scott_07_04.png ├── scott_07_05.png ├── scott_07_06.png ├── scott_07_07.png ├── scott_07_08.png ├── scott_07_09.png ├── scott_07_10.png ├── scott_08_01.png ├── scott_08_02.png ├── scott_08_03.png ├── scott_08_04.png ├── scott_08_05.png ├── scott_08_06.png ├── scott_08_07.png ├── scott_08_08.png ├── scott_08_09.png ├── scott_08_10.png ├── scott_09_01.png ├── scott_09_02.png ├── scott_09_03.png ├── scott_09_04.png ├── scott_09_05.png ├── scott_09_06.png ├── scott_09_07.png ├── scott_09_08.png ├── scott_09_09.png ├── scott_09_10.png ├── scott_10_01.png ├── scott_10_02.png ├── scott_10_03.png ├── scott_10_04.png ├── scott_10_05.png ├── scott_10_06.png ├── scott_10_07.png ├── scott_10_08.png ├── scott_10_09.png └── scott_10_10.png └── stateful_stateless ├── stateful.html ├── stateful.py ├── stateless.html └── stateless.py /.DS_Store: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/hnasr/python_playground/c9f96e518d43e14ad74519b7e2508b7e3b2fe94f/.DS_Store -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # python_playground 2 | python playground for my youtube hanne 3 | -------------------------------------------------------------------------------- /mysqldemopython/.vscode/settings.json: -------------------------------------------------------------------------------- 1 | { 2 | "python.pythonPath": "/Library/Frameworks/Python.framework/Versions/3.7/bin/python3" 3 | } -------------------------------------------------------------------------------- /mysqldemopython/db.py: -------------------------------------------------------------------------------- 1 | import mysql.connector 2 | 3 | #connecting to a database 4 | con = mysql.connector.connect( 5 | host = "husseinmac", 6 | user = "root", 7 | password = "password", 8 | database = "husseindb", 9 | port = 3306 10 | ) 11 | 12 | print("Hey, I think I'm connected") 13 | 14 | #cursor 15 | cur = con.cursor() 16 | #insert a new row 17 | 18 | for i in range(100): 19 | cur.execute("INSERT INTO employees (ID, NAME) VALUES (%s, %s)", (i+10, f'Mark{i}' )) 20 | 21 | #execute the query 22 | cur.execute("SELECT ID,NAME FROM employees") 23 | 24 | #cur.execute("SELECT ID,NAME FROM employees where NAME = %s", ("Yara",)) 25 | 26 | rows = cur.fetchall() 27 | 28 | for r in rows: 29 | print(f" ID = {r[0]} NAME = {r[1]}") 30 | 31 | #commit the transaction 32 | con.commit() 33 | 34 | #close the cursor 35 | cur.close() 36 | #close the connection 37 | con.close() 38 | -------------------------------------------------------------------------------- /servervsclientcursor/clientcur.py: -------------------------------------------------------------------------------- 1 | import psycopg2 2 | import time as t 3 | 4 | con = psycopg2.connect(host="husseinmac", 5 | database="husseindb", 6 | user="postgres", 7 | password = "postgres") 8 | #client side cursor 9 | s = t.time() 10 | cur = con.cursor() 11 | e = (t.time() - s)*1000 12 | print(f"Cursor established in {e}ms") 13 | 14 | s = t.time() 15 | cur.execute("select * from employees") 16 | e = (t.time() - s)*1000 17 | print(f"execute query {e}ms") 18 | 19 | s = t.time() 20 | rows = cur.fetchmany(50) 21 | e = (t.time() - s)*1000 22 | print(f"fetching first 50 rows {e}ms") 23 | 24 | cur.close() 25 | con.close() 26 | 27 | 28 | -------------------------------------------------------------------------------- /servervsclientcursor/insert1m.py: -------------------------------------------------------------------------------- 1 | import psycopg2 2 | 3 | con = psycopg2.connect(host="husseinmac", 4 | database="husseindb", 5 | user="postgres", 6 | password = "postgres") 7 | 8 | cur = con.cursor() 9 | 10 | for i in range(1000000): 11 | cur.execute("insert into employees (id, name) values(%s,%s) ", (i, f"test{i}")) 12 | 13 | #commit 14 | con.commit() 15 | 16 | #close 17 | con.close() 18 | -------------------------------------------------------------------------------- /servervsclientcursor/servercur.py: -------------------------------------------------------------------------------- 1 | import psycopg2 2 | import time as t 3 | 4 | con = psycopg2.connect(host="husseinmac", 5 | database="husseindb", 6 | user="postgres", 7 | password = "postgres") 8 | #client side cursor 9 | s = t.time() 10 | cur = con.cursor("hussein") 11 | e = (t.time() - s)*1000 12 | print(f"Cursor established in {e}ms") 13 | 14 | s = t.time() 15 | cur.execute("select * from employees") 16 | e = (t.time() - s)*1000 17 | print(f"execute query {e}ms") 18 | 19 | s = t.time() 20 | rows = cur.fetchmany(50) 21 | e = (t.time() - s)*1000 22 | print(f"fetching first 50 rows {e}ms") 23 | 24 | cur.close() 25 | con.close() 26 | 27 | 28 | -------------------------------------------------------------------------------- /splitimage/.vscode/launch.json: -------------------------------------------------------------------------------- 1 | { 2 | // Use IntelliSense to learn about possible attributes. 3 | // Hover to view descriptions of existing attributes. 4 | // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387 5 | "version": "0.2.0", 6 | "configurations": [ 7 | { 8 | "name": "Python: Current File", 9 | "type": "python", 10 | "request": "launch", 11 | "program": "${file}", 12 | "console": "integratedTerminal" 13 | }, 14 | { 15 | "name": "Python: Current File", 16 | "type": "python", 17 | "request": "launch", 18 | "program": "${file}", 19 | "console": "integratedTerminal" 20 | } 21 | ] 22 | } -------------------------------------------------------------------------------- /splitimage/.vscode/settings.json: -------------------------------------------------------------------------------- 1 | { 2 | "python.pythonPath": "/Library/Frameworks/Python.framework/Versions/3.7/bin/python3" 3 | } -------------------------------------------------------------------------------- /splitimage/index.py: -------------------------------------------------------------------------------- 1 | import image_slicer 2 | 3 | image_slicer.slice('scott.jpg', 100) -------------------------------------------------------------------------------- /splitimage/scott.jpg: -------------------------------------------------------------------------------- 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Stateful web app

11 | 14 | 15 | 18 | 21 | 48 | 49 | -------------------------------------------------------------------------------- /stateful_stateless/stateful.py: -------------------------------------------------------------------------------- 1 | import tornado.web 2 | import tornado.ioloop 3 | import psycopg2 4 | import json 5 | 6 | #define connection variable (state) 7 | con = None 8 | 9 | class getHandler(tornado.web.RequestHandler): 10 | def get(self): 11 | self.render("stateful.html") 12 | 13 | class connectHandler(tornado.web.RequestHandler): 14 | def post(self): 15 | #connect to the db 16 | global con 17 | con = psycopg2.connect( 18 | host = "husseinmac", 19 | database="husseindb", 20 | user = "postgres", 21 | password = "postgres") 22 | 23 | 24 | self.set_header("content-type", "application/json") 25 | self.write(json.dumps({"success": True})) 26 | 27 | class readHandler(tornado.web.RequestHandler): 28 | def post(self): 29 | global con 30 | try: 31 | #cursor 32 | cur = con.cursor() 33 | 34 | #execute query 35 | cur.execute("select id, name from profiles where id = 362") 36 | 37 | rows = cur.fetchall() 38 | 39 | #close the cursor 40 | cur.close() 41 | 42 | #close the connection 43 | self.set_header("content-type", "application/json") 44 | self.write(json.dumps(rows[0])) 45 | except: 46 | self.write(json.dumps({"success": False, "error": "Failed read the database."})) 47 | 48 | def get(self): 49 | self.render("stateless.html") 50 | 51 | class closeHandler(tornado.web.RequestHandler): 52 | def post(self): 53 | global con 54 | 55 | self.set_header("content-type", "application/json") 56 | try: 57 | #close the connection 58 | con.close() 59 | self.write(json.dumps({"success": True})) 60 | except: 61 | self.write(json.dumps({"success": False, "error": "Failed to close database."})) 62 | 63 | if (__name__ == "__main__"): 64 | app = tornado.web.Application([ 65 | ("/stateful", getHandler), 66 | ("/stateful/connect", connectHandler), 67 | ("/stateful/read", readHandler), 68 | ("/stateful/close", closeHandler) 69 | ]) 70 | 71 | app.listen(3000) 72 | print("Listening on port 3000") 73 | tornado.ioloop.IOLoop.instance().start() -------------------------------------------------------------------------------- /stateful_stateless/stateless.html: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | Stateless 8 | 9 | 10 |

Stateless web app

11 | 12 | 15 | 24 | 25 | -------------------------------------------------------------------------------- /stateful_stateless/stateless.py: -------------------------------------------------------------------------------- 1 | import tornado.web 2 | import tornado.ioloop 3 | import psycopg2 4 | import json 5 | 6 | class getHandler(tornado.web.RequestHandler): 7 | def get(self): 8 | self.render("stateless.html") 9 | 10 | class statelessHandler(tornado.web.RequestHandler): 11 | def post(self): 12 | #connect to the db 13 | con = psycopg2.connect( 14 | host = "husseinmac", 15 | database="husseindb", 16 | user = "postgres", 17 | password = "postgres") 18 | 19 | #cursor 20 | cur = con.cursor() 21 | 22 | #execute query 23 | cur.execute("select id, name from profiles where id = 362") 24 | 25 | rows = cur.fetchall() 26 | 27 | #close the cursor 28 | cur.close() 29 | 30 | #close the connection 31 | con.close() 32 | self.set_header("content-type", "application/json"); 33 | self.write(json.dumps(rows[0])) 34 | 35 | if (__name__ == "__main__"): 36 | app = tornado.web.Application([ 37 | ("/stateless", getHandler), 38 | ("/stateless/read", statelessHandler) 39 | ]) 40 | 41 | app.listen(2000) 42 | print("Listening on port 2000") 43 | tornado.ioloop.IOLoop.instance().start() --------------------------------------------------------------------------------