- Operations on string in Python -

String:

A string is a list of characters. · It can be a combination of alphabets, numbers, punctuation, or can even include space. · In python, anything enclosed between “ “ or ‘ ‘ is considered a string.

In the below given beautiful phrase from “Winnie-the-pooh”

How many times the words ‘than you’ is repeated? 3

How many words are there in this sentence? 18

How many sub sentences are in this phrase? 4

How many words end with ‘er’ in this phrase? 4

This is an example of how we can manipulate a sentence. Now suppose it's an article that spans pages. Will it be easy to manipulate it manually? That’s where string manipulation functions help us.

If ‘str’ is a string variable, · str[0] refers to first character, · str[1] refers to the second character, and so on. · Finally str[len-1] refers to the last character where ‘len’ is the length of the string.

Some other useful and most commonly used string functions are :

Let’s check out how we can analyze the few lines of the book “Charlie and the chocolate factory” by Roald Dahl and print out a report on it.

Print the title of the book “Charlie and the chocolate factory” and then store the few lines of the book in a variable and print it.

Note:

use “ and “”” · For storing multi-lines

use “””. · For storing single line use “ or ‘

Let's see how Python can help us how many characters are there in the story snippet above.

No. of the lines in the paragraph ..Do you think it will be more than 5?

Let’s find out. No. of sentences = No. of ‘. 'Isn’t it?

Print characters in word chocolate in separate lines.

Output:

Program to Check if the word entered by the user is a palindrome. (ie reads the same from both sides .eg: madam)

Print the number of vowels in the story name.

Comments

- Object Oriented Programming -

In OOP, we can represent an entity using a class. A class bundles data (features/properties of entity - color, height, width) and functionality (movement, expression) together. An instance of a class is known as an object. Which is the only cartoon series that had predicted that Trump would be elected as the president of the USA and also predicted the coronavirus spread? Answer: Simpsons. Simpsons is a very popular animated show. You can build something similar with python. But have you ever wondered, how Simpsons look the same in all the series? Only his movement looking and, expression change but his main features like color, height, and face look exactly the same all the time. This is because we create a ‘blueprint’ of Simpsons and whenever we have to simulate him on screen we use this blueprint. This keeps a record of all the features of Simpsons and recreates it whenever we want. This is where Object-Oriented Programming(OOP) h...

- Animating characters using pygame -

If you see closely you can see that the mickey mouse animation is made out of a lot of shapes. But to create something like this we need to make a very complex code. The other way around it is to use an image, other than the basic shapes, pygame also can show images. Using images : Steps to use images in my game: > find the image you want to use > move it to the directory where you have created your code > import/load image To load the image we will first create an object and then use the image. load method to add the image to the object. here, we have created an object called an image. We then use the "pygame.image.load" to find the file in the directory ocean.png has to be replaced with the filename of your file. To place the object on a particular point of the screen we use the blit function. this function means that we are going to add the image onto the screen at position 0,0 mickey mouse is winking Usi...

- Quiz game in Python -

Game Overview ● Questions are stored in a file. We will have to read it from the file and store it in a dictionary. ● 2 points for the correct answer and -1 point for the wrong answer ● Max no. of questions asked:5 ● Questions will be shuffled once and then asked sequentially. File Template (for the program) Each question in the file is stored as <Question> : <Answer> Here ‘:’ acts as a separator between question and answer. Each line read from the file will be of string data type. ‘:’ helps in separating the answer from the question. Note: Make sure you add a ‘:’ between question and answer if adding a question manually. Algorithm Now that you have seen how the quiz game works, Let's have look at the algorithm for the same. 1. Read the entire file 2. From each line read, get the question and answer a. Add to dictionary 3. Print the rules of the game 4. Shuffle the questions 5. Get eac...

Python for kids and beginners with example code in fun and unique way.

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