Archive
Activities in Pandemic
During COVID19 school vacation I had several activities with my kids specially Drawing and Coloring, here are some papers that we colored along with Turkish Coffee (coffee for me). I take the photo using Galaxy Note 9.

Another sketch challenge: Red Pandas
This week sketch challenge @1hour1sketch is to Draw a Red Pandas or Racoon Fox, so here is my sketch using pencil, black Pen and watercolour.
I am sure I can’t do better than this, I need more practice in using white color and fur drawing / painting
More Sketches on my Sketch page ..
also follow me on Twitter @h_ta3kees

Python: My Orders Tracker P-4
Learning : Pythn, sqlite, Database, SQL
Subject: Create a system to track the orders
In this last part we will write the code to Edit an Order, in editing an order function first we will show all orders and will ask the user to select the one to be EDIT, then we will display that order detail on the screen and ask the user to confirm the action by entering ‘Y’ [our code will handel both y and Y]. We will ask the user about each attribute in the Order details if it need to be change or [Just press Enter to Keep the Current Data], also if the user enter ‘e’ or ‘E’ we will exit from the Editing mode.
Here is the code ..
# Function to Edit an Order
def edit_order():
os.system('clear')
print("\n==========[ Edit Orders ]==========")
show_order('yes')
edit_order = input(' Select the Order ID to be Edited. [E to Exit] > ')
if edit_order in ['e','E'] :
return
elif not edit_order.isnumeric() :
input('\n You need to enter an Order''s ID [Numeric]. .. Press any Key .. ')
return
try:
c.execute ("select * from orders where o_id ={}".format(edit_order))
order_list = c.fetchone()
if order_list == [] :
input('\n ID {} Not Exsist. .. Press any key to continue. '.format(edit_order))
return
os.system('clear')
print("\n==========[ Edit Orders ]==========\n")
print('\n Details of the Order you select:\n ')
print(" "*15,"ID: ",order_list[0])
print(" "*13,"Date: ",order_list[1])
print(" "*5,"Order Number: ",order_list[2])
print(" "*12,"Price: ",order_list[4])
print(" "*9,"Quantity: ",order_list[5])
print(" "*3,"Shipment Price: ",order_list[6])
print(" "*7,"Total Cost: {:.2f}".format((order_list[4]*order_list[5]) + order_list[6]))
print(" "*6,"Description: ",order_list[3])
print(" "*12,"Image:",order_list[8])
print(" "*13,"Link:",order_list[7])
user_confirm = input("\n\n You Select to EDIT the above Order, Enter Y to confirm, E to Exit. > ")
if user_confirm in ['e','E'] :
input('\n You entered ''E'' to Exit. Nothing will be change. Press any key. ')
return
if user_confirm in ['y','Y'] :
#To Edit the order..
print("#"*57)
print("##"," "*51,"##")
print("## NOTE: Enter E any time to EXIT/Quit."," "*12,"##")
print("## OR JUST Press Enter to keep the Current data."," ##")
print("##"," "*51,"##")
print("#"*57,)
while True :
new_date = input (f'\n The current date is: {order_list[1]}, Enter the New date as[dd-mm-yyyy] > ')
if e_to_exit(new_date) =='e' : return
if new_date =="" : break # Break the while loop if the user want to keep the current Date.
if date_validation (new_date) == 'valid' :
break
else :
print(date_validation (new_date))
new_onum = input (f'\n The current Order Number is: {order_list[2]}, Enter the New Order Number. [E to Exit]. > ')
if e_to_exit(new_onum) =='e' : return
new_qunt = input (f'\n The current Quantity is: {order_list[5]}, Enter the New Quantity. [E to Exit]. > ')
if e_to_exit(new_qunt) =='e' : return
new_price = input (f'\n The current Price is: {order_list[4]}, Enter the New Price. [E to Exit]. > ')
if e_to_exit(new_price) =='e' : return
new_ship_price = input (f'\n The current shipment Price is: {order_list[6]}, Enter the New Quantity. [E to Exit]. > ')
if e_to_exit(new_ship_price) =='e' : return
new_link = input (f'\n The current link is: {order_list[7]}, Enter the New Link. [E to Exit]. > ')
if e_to_exit(new_link) =='e' : return
new_image = input (f'\n The current Image is: {order_list[8]}, Enter the New Image (path). [E to Exit]. > ')
if e_to_exit(new_image) =='e' : return
new_desc = input (f'\n The current Description is:\n {order_list[3]}.\n\n Enter the New Description. [E to Exit]. > ')
if e_to_exit(new_image) =='e' : return
# Updating the record in the DataBase.
if new_date > '' and new_date != "e" :
c.execute("update orders set order_date = '{}' where o_id = {}".format(new_date,int(order_list[0])))
db_conn.commit()
if new_onum > '' and new_onum != "e" :
c.execute("update orders set order_num = '{}' where o_id = {}".format(new_onum,int(order_list[0])))
db_conn.commit()
if new_qunt > '' and new_qunt != "e" :
c.execute("update orders set order_quantity = '{}' where o_id = {}".format(new_qunt,int(order_list[0])))
db_conn.commit()
if new_price > '' and new_price != "e" :
c.execute("update orders set order_price = '{}' where o_id = {}".format(new_price,int(order_list[0])))
db_conn.commit()
if new_ship_price > '' and new_ship_price != "e" :
c.execute("update orders set order_price = '{}' where o_id = {}".format(new_ship_price,int(order_list[0])))
db_conn.commit()
if new_link > '' and new_link != "e" :
c.execute("update orders set order_link = '{}' where o_id = {}".format(new_link,int(order_list[0])))
db_conn.commit()
if new_image > '' and new_image != "e" :
c.execute("update orders set order_img = '{}' where o_id = {}".format(new_image,int(order_list[0])))
db_conn.commit()
if new_desc > '' and new_image != "e" :
new_desc = " ".join([word.capitalize() for word in new_desc.split(" ")])
c.execute("update orders set order_desc = '{}' where o_id = {}".format(new_desc,int(order_list[0])))
db_conn.commit()
input('\n One record has been EDITED and Saved... \n ... Press any key to Continue ...')
else:
input('\n Wrong input ... Press any key to continue ..')
except:
pass
[All the System Codes available in Download Page.]
Finish: Now we have an application that will store and retrieve our simple order data.
Enhancement: We can do some enhancement in [link and image] data part to show and display them in better way.
| Part 1 | Part 2 | Part 3 | Part 4 |
To Download my Python code (.py) files Click-Here
By: Ali Radwani
Another sketch challenge: The House
This week sketch challenge @1hour1sketch is to Draw a Red House, so here is my sketch using pencil, black Pen and watercolour. More Sketches on my Sketch page .. also follow me on Twitter @h_ta3kees

Python: My Orders Tracker P-3
Learning : Pythn, sqlite, Database, SQL
Subject: Create a system to track the orders
In this part we will write the code to Delete an Order that we have from our system, also we will add some validations on the user input, like if the user enter something not from the menu, or to do so, first we will re-call the show_orders() function that we have and passing the ‘yes’ parameter which means we are calling the function from inside another function [we will not print the function header, and will not clear the screen]. Then we will ask the user to select/Enter the ID of the order to be Deleted, after that we will print tha order details again on the screen and ask the user to confirm Deleting command by entering ‘Y’ … thats it.. let’s write the code..
# Delete Order
def del_order():
os.system('clear')
print("\n==========[ Delete Orders ]==========\n")
show_order('yes')
del_order = input(' Select the Order ID to be Deleted. [E to Exit] > ')
if not del_order.isnumeric() :
input('\n You need to enter an Orders ID [Numeric]. .. Press any Key .. ')
return
elif del_order in ['e','E'] :
return
try:
c.execute ("select * from orders where o_id ={}".format(del_order))
order_list = c.fetchone()
if order_list == [] :
input('\n ID {} not exsist.'.format(del_order))
return
os.system('clear')
print("\n==========[ Delete Orders ]==========\n")
print('\n Details of the Order you select:\n ')
print(" ID: ",order_list[0])
print(" Date: ",order_list[1])
print(" Order Number: ",order_list[2])
print(" Price: ",order_list[4])
print(" Quantity: ",order_list[5])
print(" Shipment Price: ",order_list[6])
print(" Total Cost: {:.2f}".format((order_list[4]*order_list[5]) + order_list[6]))
print("\n Description:",order_list[3])
print(" Image:",order_list[8])
print(" Link:",order_list[7])
user_confirm = input("\n\n You Select to DELETE the above Order, Enter Y to confirm, E to Exit. > ")
if user_confirm in ['y','Y'] :
#To Delete the order..
c.execute ("delete from orders where o_id ={}".format(int(del_order)))
db_conn.commit()
input('\n One record has been DELETED ... \n ... Press any key to Continue ...')
elif user_confirm in ['n','N']:
input("\n You select not to DELETE any thing. Press any key to Continue .. ")
elif user_confirm in ['e','E']:
input("\n You select stop the process and EXIT. ... Press any key to Continue .. ")
return
else:
input('\n Wrong input ... Press any key to continue ..')
except:
pass
In Next Post: In the coming post P4 , we will write the codes to Edit an order information.
| Part 1 | Part 2 | Part 3 | Part 4 |
To Download my Python code (.py) files Click-Here
By: Ali Radwani
Another sketch challenge: Horse
This week sketch challenge @1hour1sketch is to Draw a Horse, so here is my sketch using pencil, black Pen. More Sketches on my Sketch page .. also follow me on Twitter @h_ta3kees

Python: My Orders Tracker P-2
Learning : Pythn, sqlite, Database, SQL
Subject: Create a system to track the orders
In this part we will write the code to Add new Order to the system, and to Show the orders we have in the database. Also we will write tow new functions that we will use in our application, one is the Date Validation and the other is just to check if the user enter a [q or Q] during collecting data [Q mean Quit] then we will call the quit() function.
Before we start the Add new order function, we will write the def date_validation (the_d) : and we will pass the date that the user enter and will check if it is in the right format, here in our application we will check if it is in [dd-mm-yyyy] format, the function will return the ‘valid’ string if the date in in right format, otherwise it will return a message of error.
Here is the function code ..
# Date Validation function.
def date_validation (the_d) :
if the_d=="" or the_d[2] !='-' or the_d[5] !='-' :
return '\n Date Not Valid. [Date format: dd-mm-yyyy]'
else:
if not(len((the_d.split("-")[2])) == 4 ):
return '\n Date Not Valid "Bad Year". [Date format: dd-mm-yyyy].'
if not (len((the_d.split("-")[1])) == 2 and (int(the_d.split("-")[1]) > 0 and int(the_d.split("-")[1]) 0 and int(the_d.split("-")[0]) <=31)) :
return '\n Date Not Valid "Bad Day". [Date format: dd-mm-yyyy].'
return 'valid'
![]() |
The other function as we said, we will call it after each data entry to check on user input if it is ‘Q’ or Not. Here is the code..
def q_to_quit(check):
# If the user enter [q or Q] the function will return quit function.
if check in ['q','Q'] :
return quit()
Now, we will start to write the function to Add new order, we will ask the user to enter the date for the order, such as Order date, order number, the description, price and so-on. Here is the code..
# Function to add new order to the system.
def add_order():
os.system('clear')
print("\n==========[ Add New Order ]==========\n")
while True :
print(' NOTE: Enter Q any time to EXIT/Quit. \n')
order_date = input(' Enter the Date of the Order. as[dd-mm-yyyy] > ')
q_to_quit(order_date)
if date_validation (order_date) == 'valid' :
break
else :
print(date_validation (order_date))
order_Num = input(' Enter the order ID or Number. > ')
q_to_quit(order_Num)
order_desc = input(' Enter the order Description. > ')
q_to_quit(order_desc)
order_price = input(' Enter the Order Price. > ')
q_to_quit(order_price)
order_quantity = input(' Enter the quantity of the order. > ')
q_to_quit(order_quantity)
shipment_price = input(' Enter the shipment_price. > ')
q_to_quit(order_price)
order_link = input(' Enter the hyper Link to the Order. > ')
q_to_quit(order_link)
order_img = input(' Enter the Image file path. > ')
q_to_quit(order_img)
order_desc = " ".join([word.capitalize() for word in order_desc.split(" ")])
c.execute ("INSERT INTO orders (order_date, order_num, order_desc, order_price,order_quantity, shipment_price , order_link, order_img ) VALUES(:order_date, :order_Num, :order_desc, :order_price, :order_quantity, :shipment_price , :order_link, :order_img)", {"order_date":order_date, "order_Num":order_Num , "order_desc":order_desc, "order_price":order_price,"order_quantity":order_quantity, "shipment_price":shipment_price , "order_link":order_link, "order_img":order_img})
db_conn.commit()
input('\n Press any key to Contenu..')
After adding a records to the database, now we want to show what we have and print it on the screen, so we will write a function to Show the data. Here is the code..
# Function to display the data on the screen.
def show_order():
os.system('clear')
print("\n==========[ Show Orders ]==========\n")
c.execute ("select * from orders where o_id >0")
order_list = c.fetchall()
for x in range (0,len(order_list)):
print(" ID: ",order_list[x][0]," "*(10-(len(str(order_list[x][0])))), end='')
print("Date: ",order_list[x][1]," "*2, end='')
print(" Order Number: ",order_list[x][2]," "*(8 - len(order_list[x][2])))
print("Price: ",order_list[x][4]," "*(6 - len(str(order_list[x][4]))), end='')
print("Quantity: ",order_list[x][5]," "*(11 - len(str(order_list[x][5]))), end='')
print("Shipment Price: ",order_list[x][6]," "*(10 - len(str(order_list[x][6]))), end='')
print("[ Total Cost: ",(order_list[x][4]*order_list[x][5]) + order_list[x][6],"]")
print("\nDescription:",order_list[x][3])
print("Image:",order_list[x][8])
print("Link:",order_list[x][7])
print("-------------------------------------------------------------------\n")
input('\n Press any key to Contenu.. ')
![]() |
In Next Post: In the coming post P3 , we will write the codes to Delete an Order and to Edit an order.
To Download my Python code (.py) files Click-Here
By: Ali Radwani
Another sketch challenge week: Parrot
This week sketch challenge @1hour1sketch is to Draw a Parrot, so here is my sketch using pencil, black Pen. More Sketches on my Sketch page .. also follow me on Twitter @h_ta3kees

Another Sketch Challenge: Giraffe
This week sketch challenge @1hour1sketch is to Draw a Giraffe, so here is my sketch using pencil, black Pen. More Sketches on my Sketch page ..

By: Ali Radwani.
Python: Data Visualization Part-2
Learning : python, pygal, Data Visualization,Line Chart
Subject: Data visualization using pygal library
In this post we will talk about Line-chart using pygal library in python, Line-chart has three sub-type as: Basic, Stacked ,Time. We will use the data-set for Average age of Males and Females at first Marage during 6 yeaars (2000 and 2006), the code line to set the data data will be as :
line_chart.add(‘Females’,[22,25,18,35,33,18])
line_chart.add(‘Males’, [30,20,23,31,39,44])
Line-chart: Basic
This is very normal and basic chart we use in all reports, we are feeding the data for Males and Females average age in first marage.. here is the code and the output ..
import pygal
line_chart = pygal.Line()
line_chart.add('Females',[22,25,18,35,33,18])
line_chart.add('Males', [30,20,23,31,39,44])
line_chart.x_labels=map(str,range(2000,2006))
line_chart.title = "Males and Females first Marage Age (average)"
line_chart.render()
![]() |
Line-chart: Stacked Line Stacked chart (fill) will put all the data in top of each other. Here is the code.
|
Line-chart: Time Line Last type just to add or format the x_lables of the chart, we can use lambda function to do this (we can use lambda function with any other chart types), here we will do two example, one is using full time/date and another just write the month-year as string and will use the lambda function to calculate second data-set of Tax’s based on the salary amount..
import pygal
from datetime import datetime, timedelta
d_chart = pygal.Line()
d_chart.add('Females',[22,25,18,35,33,18])
d_chart.add('Males', [30,20,23,31,39,44])
d_chart.x_labels = map(lambda d: d.strftime('%Y-%m-%d'), [
datetime(2000, 1, 2),
datetime(2001, 1, 12),
datetime(2002, 3, 2),
datetime(2003, 7, 25),
datetime(2004, 1, 11),
datetime(2005, 9, 5)])
d_chart.title = "Males and Females first Marage Age (average)"
d_chart.render()
![]() |
To give better example of using lambda function, we will say: we have a salaries for 6 years (May-2000 to May-2006) and a Tax of 0.25, we will let the lambda function to calculate the Tax amount for each salary. Here is the code ..
# Using lambda to calculate Tax amount
import pygal
d_chart = pygal.Line()
d_chart.add('Salary', [550,980,1200,1800,2200,3500])
d_chart.add('Tax',map(lambda t: t*0.25, [550,980,1200,1800,2200,3500]))
d_chart.x_labels = map(str,(
'May-2001','May-2002',
'May-2003','May-2004',
'May-2005','May-2006'))
d_chart.title = "Salary and Tax (0.25) payment in 6 years"
d_chart.render()
![]() |
Next we will talk about Histogram chart.
:: Data Visualization using pygal ::
| Part-1Bar-Chart | Part-2 Line Chart | Part-3 | Part-4 |
By: Ali Radwani
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