In the programming languages, a switch statement is a logical loop or syntax that tests the variable’s value and compares it with multiple cases. Once the match is found with the cases given in the function, the block statement which is associated with that particular variable will be executed.
Note: A switch case statement in any Programming language is a type of selection control which allows the user to let their input variables to change the control flow of the program and execution via searching and mapping.
Python doesn’t support the switch case statement:
Although many popular languages like Java, C, C++, PHP, etc., have an in-built switch case statement, it is very surprising to know that the Python language doesn’t support the switch statement.
There is no keyword as ‘switch’ present inside Python programming language.
Switch case replacement in Python (replacement):
In this section, we will write a program in Python, which will act like a switch statement program works in other programming languages.
Since there is no switch statement is available in Python, so we have to use some Pythonic way to implement syntax same as switch statement in our program. For this, we will use some powerful dictionary mappings that are also known as associative arrays. These associative arrays provide simple one-to-one key-value mappings.
Here is an example of a Python program which is the implementation of the switch statement.
Example: In the following example, we will write separate functions, create a dictionary and then and we will build an input function so that the whole Python code will act as a switch statements that work in other programming languages.
We will follow the following steps to build an implementation of the switch case statement:
Step 1: First, we will start by creating separate functions for each case (representing season) that we want to handle.
Note: Always make sure that there is a default case also while handling cases.
Step 2: The next step for us is to define the dictionary for the defined function and cases.
Step 3: The last step for us is to create a function that will take input as an integer from the user and run through all the cases we have defined. The integer function value will automatically invoke the corresponding case function after the dictionary hooks up.
Now the complete Python program ready with switch case implementation will look like the given code:
Now, let’s add output variable a in this statement so that the program will give us desirable output. We will give two input let’s values to run our program.
Now, the final program will look something like this:
When we run the program, we will get the following output:
That’s how we can implement a program to use it as a switch case statement in Python programming.