-Operations on Dictionary in Python-

Think of a few scenarios in which we can use a dictionary?

. So, today we will see how we can use the dictionary to maintain a database of Countries and their capitals.

When we create a database, what are the operations we expect to do on it?

● Insert

● Delete

● Display

● search

Let us see the functions/methods, which help us in doing these.

writes code on IDLE Create a dictionary of countries and their capitals.

Print the countries in the dictionary.

Note: Explain how the use of the list is displaying keys as a normal list

Print the capitals stored in the dictionary.

Note: The use of the list is displaying values as a normal list

Get the capital of India from a dictionary using the get() function.

Create an empty dictionary and start an infinite while loop.

Print the menu to maintain a country-capital repository and get user choice.

Check if the choice entered is 1, the get country, capital as user input , and insert these values into the dictionary.

Check if the choice entered is 3 and print all capitals as a list.

Check if the choice entered is 4, get as the user input a country and then print its capital.

Check if the choice entered is 5, get as the user input a country and delete that from the dictionary.

If the option entered is none of the above, exit from the program.

Comments

- 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...

- Functions in Python -

Function- ● A function is a named block of code designed to perform a specific task. ● It takes in some input (optional), processes it, and gives us some output. (optional) ● A function once defined, can be called many times. eg: function to draw a square, function to calculate average, etc. A function has 2 parts - function definition and function call. Have you ever used a soft drink vending machine? You give it some input (the drink you want, money ) and it does some processing inside(checks the amount, checks availability) and gives you the output(the soft drink). Here, you are not bothered about, how the machine works or from where it gets the soft drink. right? You just give the input and you get the required output. isn’t it? Functions in programming also behave in a similar way. Function definition: Set of instructions that form the function. Syntax def <function name>(<parameter>): ...

- 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.

Search This Blog