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Python: Cooking App P-5

February 13, 2020 Leave a comment


Learning : Python, Data-Base, SQlite
Subject: Writing a Cooking Application

RECIPES MENU: Once I start reading the Net (blogs and Cooking Books) to see how cookers talking about foods-recipes, I realise that I may need to add something to the DataBase, then I start writing the codes for the “Recipe Menu” and immediately I find the we need to add a new Table; I call it “recipes_steps” it will hold several steps of how to cook a recipe.

DataBase Diagram

Here is the code to create the new Table and adding the record 0 (Zero).
# To create the Table “recipes_steps” .
sql_recipes_steps =”CREATE TABLE if not exists recipes_steps (st_id INTEGER PRIMARY KEY AUTOINCREMENT,r_id integer, rec_steps text )”
c.execute(sql_recipes_steps)
db_conn.commit()

# To add the Record Zero.
c.execute (“INSERT INTO recipes_steps (st_id) VALUES(:st_id)”,{“st_id”:0})
db_conn.commit()

First let’s see the “Recipe Menu” and from there we will write the codes for each item in the menu. As we saw in Ingredients Menu, same functionality should be here to, Listing all Recipes, Adding new one, Editing and Deleting a recipes. We will write the code for each of them, and here is the code for the “Recipes Menu”

 # Recipes Menu - Function
 
def recipes_menu ():
    while True:
        os.system("clear")
        print('\n ===========[ RECIPES MENU ]=============')
        print('  --------------------------------------')
        print(' 1. Show Recipes.')
        print(' 2. Add Recipe.')
        print(' 3. Delete Recipe. ')
        print(' 4. Edit Recipe.')
        print(' 9. Exit')
        uinp= input('\n Enter your Selection: ')

        if uinp == '1':
            show_recipes()
        elif uinp == '2':
            add_recipe()
        elif uinp == '3':
            del_recipe()
        elif uinp == '4':
            edit_recipe()
        elif uinp =='9':
            return
        else:
            print('\n  Please select from the Menu.')


So first thing we will work on “Show Recipes”, once the user select Show Recipes another Menu will be display to give more option as in the screen shot..

To display the Recipes based on the options we have, we will write a function that take a parameter based on the user selection so the user can search for a recipe based on it’s Name, Date or other details. Let’s see the code ..



NOTE THAT: We did nothing with Tags option, after we finish the application we will assume that the Business owner ask to add a new requirement to the application, and we will see the impact of this and who to solve it.


In Next Post we will work on the Adding New Recipe to our Cooking Application.



To Download my Python code (.py) files Click-Here




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By: Ali Radwani




Python: Cooking App P-4

February 11, 2020 Leave a comment


Learning : Python, Data-Base, SQlite
Subject: Writing a Cooking Application

INGREDIENT MENU: In this post we will write the Python code for the Ingredient Menu Functions. We have four main Functions :

1. Show all Ingredient.
2. Add Ingredient.
3. Delete Ingredient.
4. Edit Ingredient.

We need the Ingredient List so the user can select an Ingredient for the Recipes they want to write. First we will list down all the Ingredient in the Table.

show_ingredient is a function to list all the ingredient in “ingredients_list” Table, here is the code ..

 # Show Ingredient Function
 
def show_ingredient():

    os.system("clear")
    print('\n ====== Show All Ingredient =====')
    show_sql = c.execute('select * from ingredients_list where i_l_id > 0 order by i_name')
    for each in c.fetchall() :
        print ('  ',each[0],'....',each[1])

    input('\n   ..   Press any key .. ') 


add_ingredient Function will let the user to add more Ingredients to the list.

 # Add New Ingredients Function
 
def add_ingredient():

    os.system("clear")
    print('\n ====== Adding New Ingredient =====')
    ing_name = input('\n\n   Enter an Ingredient you want to add: ').capitalize()
    c.execute ("INSERT INTO ingredients_list (i_name) VALUES(:i_name)",{"i_name":ing_name})
    db_conn.commit()

    input('\n   .. One Ingredient Added ..   Press any key .. ')


del_ingredient To Delete an Ingredients we need to enter it’s ID, and If we Delete one and that one was used in any recipes, then once we view the recipe the Ingredients will not show there.

 # To Delete an Ingredient 

def del_ingredient():

    os.system("clear")
    print('\n ====== Delete an Ingredient =====\n')
    c.execute('select * from ingredients_list where i_l_id > 0 order by i_name')
    for each in c.fetchall() :
        print ('  ',each[0],'....',each[1])

    ing_del = input('\n\n   Enter an Ingredient ID to Delete: ')

    if ing_del.isnumeric():
        sure_remove = input('\n Please Note that if you Delete this Ingredient it will not show in any recipes that use it.\n   Are you sure you want to Remove it [Y,N] ')

        if sure_remove in ['y','Y']:
            c.execute ("Delete from ingredients_list where i_l_id = {}".format(ing_del))
            db_conn.commit()
        elif sure_remove in ['n','N']:
            print('\n You select NOT to remove the Ingredient.')
        else :
            print('\n You must select (Y or N).')

        input('\n   .. One Ingredient Deleted ..   Press any key .. ')
    else:
        print('\n   You must Enter a Numeric Ingredient ID.')
        input('\n   ..  Press any key .. ')
    


edit_ingredient To Edit an Ingredients we need to enter it’s ID, so first we will list down all Ingredients we have then the user will select the one to be edit. Here is the code to do so..

 # To Edit an Ingredients. 

def edit_ingredient():
   
    os.system("clear")
    print('\n ====== Edit an Ingredient =====')
    print('\n\n :: List of Ingredients.\n')

    c.execute('select * from ingredients_list where i_l_id > 0 order by i_name')
    for each in c.fetchall() :
        print ('  ',each[0],'....',each[1])
    ing_edit = input('\n\n   Enter an Ingredient ID you want to Change: ')

    if ing_edit.isnumeric():
        c.execute('select i_name from ingredients_list where i_l_id  = {}'.format(ing_edit))
        print('  You select to change the: ',c.fetchall())
        new_ing = input('\n  Enter the New Update for it: ')

        c.execute("update ingredients_list set i_name = '{}' where i_l_id  = {}".format(new_ing.capitalize(),int(ing_edit)))
        db_conn.commit()
        input('\n   .. One Ingredient Updated ..   Press any key .. ')

    else:
        print('\n   You must Enter a Numeric Ingredient ID.')
        input('\n   ..  Press any key .. ')


Last thing we will Insert some Ingredients in the “ingredients_list” Table so we can test the functions, for this purpose I will write this piece of code that we can run to Insert some Ingredients.

 # To Insert sample ing_list

ing_list =["Onion","Spinach","Mushroom","Tomatoes","Lime","Turnip","Snake Beans",
"Jalapeno","Baking powder","sugar","Eggs","Vanilla extract","Salt","Flour","Butter",
"Oil","Whole milk","Orange juice","Baking soda","Ground cinnamon","Dark chocolate",
 "Cocoa","Cherry","Cherry jam"]

for item in range (len(ing_list)):
    ing_name = ing_list[item].capitalize()
    c.execute ("INSERT INTO ingredients_list (i_name) VALUES(:i_name)",{"i_name":ing_name})
    db_conn.commit()


Now, we can use the Delete, Edit and Add functions to test the “Ingredients Manager” from the Main Menu, here is some screen shots.

Show Ingredients
Add Ingredients
Delete Ingredients
Edit Ingredients

Note: The Screen-Shots above was before I add Order by clause to the SQL statement.

In Next post we will write the codes for the functions in the ” Recipe Menu”.



To Download my Python code (.py) files Click-Here




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By: Ali Radwani




Python: Cooking App P-3

February 9, 2020 Leave a comment


Learning : Python, Data-Base, SQlite
Subject: Writing a Cooking Application

Over View: In last post (Part-2) we wrote the codes for Main-Menu and other sub-Menus, today in this post we will work on “Setting Menu”.
Setting Menu has three items:
1. Create the needed Tables. [To create all tables we need in the database]
2. Drop Tables. [If any things goes wrong then we can Drop (Delete) a Table (or more) ]
3. Insert Dummy Data. [To Insert ONE Record in the tables. (Record 0)]

First thing we need to create a database and set a connection to it, also we will import the [sqlite3 and os], to do so we will write this code:


  import sqlite3, os

  # Create the data-base & name it.
  db_conn = sqlite3.connect ("cooking.db")    
  
   # set the connection.
  c = db_conn.cursor() 


Now we need to write three Functions for the Setting Menu, we will start with Table creation code and here I am posting the Data-Base Tables Diagram ..

Click to Enlarge

 # Function to Create the Tables


def create_tables_() :    # to create tables.

    sql_recipes = "CREATE TABLE if not exists recipes (r_id INTEGER PRIMARY KEY AUTOINCREMENT, r_name text, r_date text, r_type text, r_details text, r_tags text )"

    sql_photo = "CREATE TABLE if not exists photo (p_id  PRIMARY KEY AUTOINCREMENT ,r_id integer , p_name text)"

    sql_ingredients_list = "CREATE TABLE if not exists ingredients_list (i_l_id PRIMARY KEY AUTOINCREMENT, i_name text )"

    sql_rec_ingredient ="CREATE TABLE if not exists rec_ingredient (ing_id INTEGER PRIMARY KEY AUTOINCREMENT, i_l_id integer, r_id integer)"

    c.execute(sql_recipes)
    db_conn.commit()

    c.execute(sql_photo)
    db_conn.commit()

    c.execute(sql_ingredients_list)
    db_conn.commit()

    c.execute(sql_rec_ingredient)
    db_conn.commit()

    input('\n   .. Cooking  Tables created..  Press any key .. ')



So now if we call this function “create_tables_() “, Tables will be created. Another function in the Setting Menu is Drop a Table, as we mention above we need this function in case we need to Delete a Table and create it again, in this function first we will list all the tables in the database and ask the user to Enter the Table need to be delete. Here is the code behind this function:

 # Drop a Table.

def drop_table():

    try:
        # First we will print-out the list of Tables.
        c.execute("SELECT name FROM sqlite_master  WHERE type = 'table'")
        db_tables =[]
        for each in c.fetchall() :
            for t in each :
                db_tables.append(t)
        print('\n  Table List .. ')
        for x in range (len(db_tables)) :
            print((x+1),db_tables[x])
        t = int(input('\n  Enter the number next to Table you want to Drop:  '))
        c.execute("DROP TABLE {}".format(db_tables[t-1]))
        db_conn.commit()
        print('\n ... One Table been Dropped')

    except:
        print('\n  No Tables with this name .. ')

    input('\n  . . . Press any key  . . ')



Last code to write in this post is to Insert One-Record in the tables, the reason of doing this manually (Hard-Coded) is that we have some “Primary key AUTOINCREMENT” fields in our tables, and to make it AUTOINCREMENT there MUST be a number first so we will enter the ZERO record (0).

 # Function to Insert the Zero Record

def insert_rec_0():

    c.execute ("INSERT INTO recipes (r_id) VALUES(:r_id)",{"r_id":0})
    
    c.execute ("INSERT INTO ingredients_list (i_l_id) VALUES(:i_l_id)",{"i_l_id":0})
    
    c.execute ("INSERT INTO rec_ingredient (ing_id) VALUES(:ing_id)",{"ing_id":0})
    
    c.execute ("INSERT INTO photo (p_id) VALUES(:p_id)",{"p_id":0})

    db_conn.commit()
   
    input('\n ...Dummy records been Inserted ....  Press any key  .. ')


In Next post we will write the codes for the functions in the “INGREDIENT MENU” to Add, Delete and Edit Ingredient List.



To Download my Python code (.py) files Click-Here




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By: Ali Radwani




Python: Cooking App P-2

February 6, 2020 1 comment


Learning : Python, Data-Base, SQlite
Subject: Writing a Cooking Application

Over view: In Part-1 (Click to Read) we list down the Main-Menus and sub-menus of some options, here we will start writing the codes of each menu. We will start from the Main-Menu.

Now with each menu from the last post, we will see the code and the run-time screen.

[ MAIN MENU ]
1. Add New Meal.
2. Ingredients Manager [will have a sub menu]
3. Add New.
4. Show Recipes.(Meals) [will have a sub menu]
5. Recipes Information.) [ number or Recipes by date, number on tags, number of Ingredients .. ]
6. Data-Base Information.
7. Setting. [will have a sub menu]
9. Exit.

 # Main Menu Code

def main_menu():
    while True :
        os.system("clear")
        print('\n ===========[ MAIN MENU ]=============')
        print(' --------------------------------------')
        print('  1. Add New Meal.')
        print('  2. Ingredients Manager')
        print('  3. Add New')
        print('  4. Show Recipes.')
        print('  5. Recipes Information.')
        print('  6. DataBase Information.')
        print('  7. Setting')
        print('  9. Exit.')

        uinput = input('\n Select the required action:  ')
        if uinput == '1' :
            pass
        elif uinput =='2' :
            ingredient_menu()
        elif uinput =='3' :
            show_recipes ()
        elif uinput =='4' :
            pass
        elif uinput =='5' :
            pass
        elif uinput == '6' :
            pass
       elif uinput == '7' :
            setting_menu()

        elif uinput == '9' :
            return
        else:
            print('\n  You need to select from the menu..')



Second menu to write is “Show Recipes”, the user will use this menu to display and read the Recipes.
[ Show Recipes ]
1. Show All Recipes.
2. Show Recipes By Date.
3. Show Recipes By Ingredients.
4. Show Recipes By Tags.
5. Show Recipes By Name.
9. Exit.

 # Show Recipes Menu Code

def show_recipes () :
    while True:
        os.system("clear")
        print('\n ===========[ Show Recipes ]=============')
        print('  --------------------------------------')
        print(' 1. Show All Recipes.')
        print(' 2. Show Recipes By Date. ')
        print(' 3. Show Recipes By Ingredients.')
        print(' 4. Show Recipes By Tags.')
        print(' 5. Show Recipes By Name.')
        print(' 9. Exit')
        uinp= input('\n Enter your Selection: ')

        if uinp == '1':
            pass
        elif uinp == '2':
            pass
        elif uinp == '3':
            pass
        elif uinp == '4':
            pass
        elif uinp == '5':
            pass

        elif uinp =='9':
            return
        else:
            print('\n  Please select from the Menu.')



Third menu we have in our application is “Ingredient Menu”, the user will it to manage the Ingredient list.

[ INGREDIENT MENU ]
1. Show all Ingredient.
2. Add Ingredient.
3. Delete Ingredient.
4. Edit Ingredient.
9. Exit.

 # Ingredient Menu Code

def ingredient_menu():
    while True:
        os.system("clear")
        print('\n ===========[ INGREDIENT MENU ]=============')
        print('  --------------------------------------')
        print(' 1. Show all Ingredient.')
        print(' 2. Add Ingredient.')
        print(' 3. Delete Ingredient. ')
        print(' 4. Edit Ingredient')
        print(' 9. Exit')
        uinp= input('\n Enter your Selection: ')

        if uinp == '1':
            pass
        elif uinp == '2':
            pass
        elif uinp == '3':
            pass
        elif uinp == '4':
            pass
        elif uinp =='9':
            return
        else:
            print('\n  Please select from the Menu.')



Last menu we have is “Setting Menu”, from here we can create the tables and Insert a Dummy-Data.
[ SETTING MENU ]
1. Create the needed Tables.
2. Drop Tables.
3. Insert Dummy Data. (MUST be run after Tables Creation)
9. Exit.

 # Setting Menu Code

def setting_menu():

    while True:
        os.system("clear")
        print('\n ===========[ SETTING MENU ]=============')
        print('  --------------------------------------')
        print(' 1. Create the needed Tables.')
        print(' 2. Drop Tables. ')
        print(' 3. Insert Dummy Data. (MUST be run One-Time after Tables Creation)')
        print(' 9. Exit')
        uinp= input('\n Enter your Selection: ')

        if uinp == '1':
            pass
        elif uinp == '2':
            pass
        elif uinp == '3':
            pass
        elif uinp =='9':
            return
        else:
            print('\n  Please select from the Menu.')




Next Post: In next post we will write the codes for Setting menu so we can run it and from there we can create the Tables and Insert the Dummy Data.



To Download my Python code (.py) files Click-Here




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By: Ali Radwani




Python: Cooking App P-1

February 4, 2020 1 comment


Learning : Python, Data-Base, SQlite
Subject: Writing a Cooking Application

Over view: We will start new project to work on in coming weeks, and will call it ” Cooking App” I will use Python as a code language and Sqlite3 as a database in a full stack task.

Assumptions: I will assume that we have some basic information about Database such as Tables, fields, records and relationships between tables also Primary key and foreign keys. All this are important just to understand what’s going on, and we will write the code to generate all tables through Python code.

The Concept: The Cooking App will give the user the ability to write a food Recipe with it’s ingredients and how to cook it. (Along with it’s photo.. ) The application will have the ability to store a list for ingredient so the user can select from it instead of re-writing it every time, also to save the photo of your dish if you want.

Data-Base Design: In this application we will need four Tables, we will call them: Recipes, Photo, Rec_ingredients and ingredient_list. Each table will have a Primary Key (id).

Here are the Tables and the Fields

    Recipes

  • r_id PRIMARY KEY AUTOINCREMENT
  • r_name
  • r_type (Breakfast, Lunch, Dinner)
  • r_tags (NOT Sure to use static list or DB-Table)
  • r_date
  • r_details
  • #In Recipes Table we will store Recipes Name, Recipes type the data and how to prepare the DISH also a photo of the dish, for the tags i am not sure if using a static list or Data-Base Table.
    Photo

  • p_id PRIMARY KEY AUTOINCREMENT
  • r_id FOREIGN KEY
  • p_name
  • #In Photo Table we will store the DISH photo by storing the jpeg file name linked to the r_id, and will be saved in a sub-folder in app-folder


    Ingredients_List

  • ing_id PRIMARY KEY AUTOINCREMENT
  • i_name
  • #In Ingredient Table we will store all the Ingredient Names, this Table will be used as (Drop-Down List) in the application.


    rec_ingredient

  • ing_id PRIMARY KEY AUTOINCREMENT
  • i_l_id
  • r_id
  • #In rec_ingredient Table we will store a links from the Recipes and Ingredients so we can list all ingredient for a Recipe.

First thing we will write in the application is the Main-Menu and other sub menus we may have in the application. (After posting this article Menus may change)

[ MAIN MENU ]
1. Add New Meal.
2. Ingredients Manager [will have a sub menu]
3. ??.
4. Show Recipes.(Meals) [will have a sub menu]
5. Recipes Information.) [ number or Recipes by date, number on tags, number of Ingredients .. ]
6. Data-Base Information.
7. Setting. [will have a sub menu]
9. Exit.


[ Show Recipes ]
1. Show All Recipes.
2. Show Recipes By Date.
3. Show Recipes By Ingredients.
4. Show Recipes By Tags.
5. Show Recipes By Name.

9. Exit.


[ SETTING MENU ]
1. Create the needed Tables.
2. Drop Tables.
3. Insert Dummy Data. (MUST be run after Tables Creation)
9. Exit.


[ INGREDIENT MENU ]
1. Show all Ingredient.
2. Add Ingredient.
3. Delete Ingredient.
4. Edit Ingredient.
9. Exit.

We can say that this is a blue-print of the application that we want to work on, everything is subject to change while working, since this is a personal application we will be flexible in changing, but in real life project development cycle we need to take an approval (From the Business Owner) on the project plan and design before we start working also to be very clear that : “Any changes in the scope of work may cost money and time”.

Next Post: In next post we will write the codes for the menu also we will create the Tables.



To Download my Python code (.py) files Click-Here




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By: Ali Radwani




Python: Applications Main Menu

January 29, 2020 Leave a comment


Learning : Application Main Menu
Subject: Main Menu Template

In some of my applications often I start writing codes to create a Menu for some parts in the app. Now in this post we will write a simple general Main Menu Template, to keep the screen prompt waiting for the user we use while True, and to exit we just use return . Here is the code ..

 
'''
Date: 10.1.2020
By: Ali Radwani.  www.ahradwani.com

Main_Menu Function 
'''
import os

def main_menu():

    """
    Template Function to help in creating a Menu for the application.

    You can change the names and functions must be defined.
    """
    while True:
        os.system("clear")
        print('\n ===========[ MENU NAME]=============')
        print('  --------------------------------------')
        print(' 1. Function-1 Name.')
        print(' 2. Function-2 Name. ')
        print(' 3. Function-3 Name')
        print(' 9. Exit')
        uinp= input('\n Enter your Selection: ')

        if uinp == '1':
            Function_1_Name()
        elif uinp == '2':
            Function_2_Name()
        elif uinp == '3':
            Function_3_Name()
        elif uinp =='9':
            return
        else:
            print('\n  Please select from the Menu.'



To Download my Python code (.py) files Click-Here




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By: Ali Radwani




Python: My Fake Data Generator P-7

January 19, 2020 Leave a comment


Learning : Python: Functions, Procedures and documentation
Subject: About fake data P-7: (Fake File Name)

In this post we will write a function to generate a file name. Each file name consist of two part, first one is the name which present (or should present) a meaning part, then there is a dot (.) then mostly three characters showing the file type or extension.

Scope of work: Our files names will have 4 syllables all to gather will be one file name. Each syllables will be loaded in a variable as shown ..
1. fext: for Files extensions such as: (doc, jpeg, pdf, bmp …. and so on)
2. name_p1: Is a noun such as (customers, visitors, players .. . and so on )
3. name_p2: will be an nouns, adjective or characteristics such as (name, index, table .. .. and so on)
4. Then we will add a random integer number between (1,30) to give the file a version, or a number.

All parts or syllables will be as one file name.

Let’s Work: First we need to load the File name syllables from the json file called : file_dict.json

 # Loading the json from a url 

import json , requests, random

fname = "https://raw.githubusercontent.com/Ali-QT/Ideas-and-Plan/master/file_dict.json"

def call_json_url(fname):
    """
    Function to load the json file from URL.
    Argument: str :fname
    
    Return : dict: data
    """
    req = requests.get(fname)
    cont = req.content
    data = json.loads(cont)
    return data

fdict = call_json_url(fname)

# Save each syllables into variable. 
f_ext = fdict["fext"]
f_p1_name = fdict["name_p1"]
f_p2_name = fdict["name_p2"]


Now we will write the function that will generate the file name:

 # Function to generate the file name 

def generate_fname():
    """
    Function to generate a Fake files name.
    
    File Name consist of four syllables, Two names, a random number and an extension.
    First two syllables of the file name will be selected randomly from a dictuenary stored in a json       file.
    
    Return : str : f_file_name

    To read the information key in the json file use this code.
    ------ CODE TO READ DATA-SET INFORMATION --------------
     	for each in fdict["information"]:
          print(each,":",fdict["information"])

    ---END OF CODE ------------------------------------------
    """
    fp1 = (random.choice (f_p1_name)["n_p1"])
    fp2 = (random.choice (f_p2_name)["n_p2"])
    fp3 = (random.choice (f_ext)["ext"])

    f_file_name = (fp1 + "_" + fp2 + "_" + str(random.randint(1,30)) + "." + fp3)

    return f_file_name


Last thing we just will call the function for X numbers of files Name we want.

 # Generate 15 file Name. 

for x in range (15):
    generate_fname()

[Output]:

 
kids_name_15.ico
speakers_list_1.asp
cars_photos_27.csv
students_database_26.xml
kids_details_27.html
animals_index_10.mov
speakers_parameters_17.csv
drivers_name_8.doc
males_attributes_16.mov
players_sketches_11.py
animals_sketches_3.wav
cars_details_12.css
animals_list_17.txt
flowers_parameters_4.doc
players_database_28.log





:: Fake Function List ::

Function Name Description
Color To return a random color code in RGB or Hex.
Date To return a random date.
Mobile To return a mobile number.
Country To return a random country name.
City To return a random City name.
ID To return X random dig as ID.
Time To return random time.
Car’s Brand
file_name file name: list for fake file names.
Creatures Random animal names of a certain type: Mammals, Birds, Insect, Reptiles
Foods To return a random list of foods



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By: Ali Radwani