CHAPTER 2 LEARN VARIABLES

LEARN PYTHON THROUGH SERIES OF ROBOT'S ACTIVITIES

 

Jony is a robot. Her boss lady has given Jony a job today. Jony's boss lady orders him to go to the store and buy some things. "Jony, you must go to the shop. Here are the items you need to buy: two coconuts, one kilogram of apple, three liters of ghee, and half a liter of coconut oil. You should buy this half liter of coconut oil only if you have money. I will give you 500 rupees“, Shaking her head yes, she scanned the paper around her eyes, compared the items on the list with the list of items she heard with her ears, and decided in two seconds that it was ok and started to go to the store.

# Jony’s boss lady said a few words and it can be the string data type. It can be represented in Python as below with a variable name with (“ …… ”) symbol.

[In]bossword = ("Jony, you must go to the shop. Here are the items you need to buy: two coconuts, one kilogram of apple, three liters of ghee, and half a liter of coconut oil. You should buy this half liter of coconut oil only if you have money. I will give you 500 rupees")

#Jony wants to count the letters in the statement given by his boss lady.

#Jony uses the following comment.

[In]len(bossword)

[Out]254

#Jony wants to store the numbers in a different location, whereas, in the previous comment the whole statement was stored in a single variable named ‘bossword’. 

[In]coconut_nos=2

[In]apple_kgs=1

[In]ghee_litres=3

[In]coco_oil_litres=0.5

[In]money_rs= 500

The code can also be written as below. 

[In]bossword = ("Jony, you must go to the shop. Here are the items you need to buy: "+str(coconut_nos)+" coconuts, "+str(apple_kgs)+" kilogram of apple, "+str(ghee_litres)+" liters of ghee and "+str(coco_oil_litres)+" of coconut oil. You should buy this half liter of coconut oil only if you have money. I will give you "+str(money_rs)+" rupees")

[In]bossword

[Out] 'Jony, you must go to the shop. Here are the items you need to buy: 2 coconuts, 1 kilogram of apple, 3 liters of ghee, and 0.5 of coconut oil. You should buy this half liter of coconut oil only if you have money. I will give you 500 rupees'

She carefully separated what kind of data she was given, namely integers 2 coconuts: the number 2 is an integer, a kilogram of apples is one, three liters of oil is an integer, and finally 1.5 liters of coconut oil is a decimal number (float). Now, she kept her master's commands as a string in her memory and also took a list of ingredients, coconut: two, apple: one kg, more ghee: one liter, coconut oil: 1.5, and operator.

# check the datatypes of each value

#list the values and index all

After tabulating the products and asking the shopkeeper for a price list, calculate the total price of 500 rupees and give it to the shopkeeper, if there is any leftover, buy one and a half liters of coconut oil.

#Jony is now preparing to go to the shop. She listed the items to buy first, then count the items.

[In]list_items=["coconut","ghee","coconut oil","apple"]

[In]total_items=len(list_items)

[In]total_items

[Out]4

 

The calendar was included in the table and the price of the other items that the shopkeeper paid would correspond to the prices of the other items.

#Jony includes the calendar and the shop id using the dictionary datatype to verify the transaction details later.

[In]shoping_details={"shopid":234, "date":"04:02:2022"}

[In]shoping_details

{'shopid': 234, 'date': '04:02:2022'}

shoping_details["date"]

'04:02:2022'

Jony patiently asked the shopkeeper to tell her the price of the items. Further, She said, "If there is a balance, I will take the items away, I will give you the price list". Shopkeeper said ok, she calmed down, and counted the items, the number of items on the list and the number of items he was keeping was correct, ok, She waited for the price list, the price list said 475, so there are only 25 rupees left, for 25 rupees, She can buy a coconut.

#shopkeeper told Jony the price items.

[In]price_items={"2 coconuts":30,"1 kg apple":250,"1 liter ghee":55,"0.5 liter coconut oil":75}

#jony gets the total price.

[In]total_price=sum(price_items.values())

[In]total_price

[Out]410

The shopkeeper asked how much coconut oil Jony wants. Jony wants 1.5 liters. If it is less than 25 rupees, give her the rest. If not, She explained that only 25 rupees is enough.

#now jony calculates the balance price.

[In]total_price=410

[In]money_rs=500

[In]bal_price=money_rs-total_price

[In]bal_price

[Out]90

 

Robots can use different types of programming languages. Jony uses Python language. Now she explains how Johnny fulfilled his duty perfectly. "I first recorded in my memory the words spoken by my master.

I made a separate note of the numbers marked in them and put in a table the objects connected with them. Before that, I saved in written form the long statement made by her boss lady.

Now when I visit a store I save the store ID in my memory. Also, I have added the store name along with the store ID. I will also include the location of the store.

Now what I need to do is to know if there are any approaches in this shop I go to that shop, and now the shopkeeper asked Jony, "Jony you have already loaned Rs 10 on a specified date last week and now you have to pay it". Jony couldn't make up his mind because boss lady didn't give her any information about this, after a while she said no you give me 1.5 liters for the remaining amount, I will give this 10 rupees when I come back next time. For my mistress did not tell me these particulars, although I have noted them in my memory. After getting the approval for it, I will give it when I come next time”.