#Display a welcome message on the screen:
print("Welcome to The Ice Creamery:")
#Create a new list variable for storing seven ice cream flavors (i.e., flavorsList)
flavorsList = ["Vanilla", "Chocolate", "Strawberry", "Pistachio", "Butter Pecan", "Cookie Dough", "Neapolitan"]
#Change the name of one flavor in the list of flavors just created.
# let's change item number 5 i.e. index 4 with "Butter scotch" in place of "Butter Pecan"
flavorsList[4] = "Butter scotch"
#Use a built-in list operation to append a new flavor to the end of the list. You should now have eight flavors in the list.
#use append()
flavorsList.append("Moose Tracks")
#Use a built-in list operation to sort the flavors list in alphabetical order.
flavorsList.sort()
#Store the number of flavors in the list in a variable and display the number of flavors.
# to get the size of list we use len() method
numFlavours = len(flavorsList)
print("Number of flavors: ", numFlavours)
#Loop through each flavor in the list using a FOR loop to display the number and name for each item in the list.
#Create FOR loop to process each flavor in flavorsList list. With each iteration, display the flavor
#using the index value in the flavors list and the name of the flavor.
print("List of flavor number and their names:")
for i in range(0, numFlavours):
print(i+1, flavorsList[i])
#Define dictionaries to hold the prices and descriptions for each cone size.
conePrices={"S":"$1.50","M":"$2.50","L":"$3.50"}
coneSizes={"S":"smallish","M":"more for me","L":"lotta lickin"}
#Prompt the user to enter a cone size (S, M, or L). Store their choice in a variable (i.e., customerSize).
customerSize = input("Enter a cone size: ")
#OPTIONAL VALIDATION: Use an IF statement to ensure a valid value was entered. Display an error message if an invalid value was entered.
# if size is anything else other than 'S' or 'L' or 'M' then show error
if customerSize not in ['S', 'M', 'L']:
print("An invalid size value was entered")
#Prompt the user to enter a flavor number. Store their choice in a number variable (i.e., customerFlavor).
customerFlavor = int(input("Enter a flavor number: "))
#OPTIONAL VALIDATION: Use an IF statement to ensure a valid value was entered. Display an error message if an invalid value was entered.
if customerFlavor > len(flavorsList):
print("An invalid flavor number was entered")
#Display the price, size description, and flavor for their choice.
#Use your conePrices dictionary to match the size value entered to the price.
#Use your coneSizes dictionary to match the size to the description of the size.
print("Your flovor: ",flavorsList[customerFlavor-1], ", Price: ", conePrices[customerSize], ", Size Description: ",coneSizes[customerSize])
Write, Run & Share Python code online using OneCompiler's Python online compiler for free. It's one of the robust, feature-rich online compilers for python language, supporting both the versions which are Python 3 and Python 2.7. Getting started with the OneCompiler's Python editor is easy and fast. The editor shows sample boilerplate code when you choose language as Python or Python2 and start coding.
OneCompiler's python online editor supports stdin and users can give inputs to programs using the STDIN textbox under the I/O tab. Following is a sample python program which takes name as input and print your name with hello.
import sys
name = sys.stdin.readline()
print("Hello "+ name)
Python is a very popular general-purpose programming language which was created by Guido van Rossum, and released in 1991. It is very popular for web development and you can build almost anything like mobile apps, web apps, tools, data analytics, machine learning etc. It is designed to be simple and easy like english language. It's is highly productive and efficient making it a very popular language.
When ever you want to perform a set of operations based on a condition IF-ELSE is used.
if conditional-expression
#code
elif conditional-expression
#code
else:
#code
Indentation is very important in Python, make sure the indentation is followed correctly
For loop is used to iterate over arrays(list, tuple, set, dictionary) or strings.
mylist=("Iphone","Pixel","Samsung")
for i in mylist:
print(i)
While is also used to iterate a set of statements based on a condition. Usually while is preferred when number of iterations are not known in advance.
while condition
#code
There are four types of collections in Python.
List is a collection which is ordered and can be changed. Lists are specified in square brackets.
mylist=["iPhone","Pixel","Samsung"]
print(mylist)
Tuple is a collection which is ordered and can not be changed. Tuples are specified in round brackets.
myTuple=("iPhone","Pixel","Samsung")
print(myTuple)
Below throws an error if you assign another value to tuple again.
myTuple=("iPhone","Pixel","Samsung")
print(myTuple)
myTuple[1]="onePlus"
print(myTuple)
Set is a collection which is unordered and unindexed. Sets are specified in curly brackets.
myset = {"iPhone","Pixel","Samsung"}
print(myset)
Dictionary is a collection of key value pairs which is unordered, can be changed, and indexed. They are written in curly brackets with key - value pairs.
mydict = {
"brand" :"iPhone",
"model": "iPhone 11"
}
print(mydict)
Following are the libraries supported by OneCompiler's Python compiler
| Name | Description |
|---|---|
| NumPy | NumPy python library helps users to work on arrays with ease |
| SciPy | SciPy is a scientific computation library which depends on NumPy for convenient and fast N-dimensional array manipulation |
| SKLearn/Scikit-learn | Scikit-learn or Scikit-learn is the most useful library for machine learning in Python |
| Pandas | Pandas is the most efficient Python library for data manipulation and analysis |
| DOcplex | DOcplex is IBM Decision Optimization CPLEX Modeling for Python, is a library composed of Mathematical Programming Modeling and Constraint Programming Modeling |