#10 Python Playground: If Statement | Computer Programming & Coding for Kids & Beginners

Magic10 10-0 Liam If Statement in Python 10-1 Emma Hi, Liam! Liam Hi, Emma! Emma I am not always able to make decisions. Can I ask Python to make a decision? Liam Sure! Python is very good at making decisions. Emma How do we let Python make the decision? Liam If you want Python to make a decision, you can use an if statement. Emma What is if statement? Liam In the if statement, processing is performed if the conditions are met. Emma So Python is always able to make a clear decision. Liam Exactly! So let's create a program with an if statement and let Python decide for us! Emma I'm looking forward to that. 10-2 Liam How to Write If Statement Liam If statement is divided into two parts: the conditional part and the process part to be performed when it is true. Emma Python will determine if that condition is met. Liam That’s right. Emma How do we write a conditional expression? Liam For conditional expressions, we use the comparison operators. Emma What are comparison operators? Liam Comparison operators in python, also called python relational operator, compares the values of two operands and returns True or False based on whether the condition is met. Emma How many comparison operators are there? Liam There are six types of comparison operators: equal to, not equal to, less than, less than or equal to, greater than, greater than or equal to. 10-3 Liam Let's Try If Statement Liam Let's make a program that displays "Good job!” and “Keep it up!” when the score is 80 points or more. Emma Sounds interesting! Liam Open a new file in IDLE and write the code like this Emma Do we need an indentation at the beginning of the line below the conditional expression? Liam Yes, indentation is necessary. The same indented area will be a single block. To indent, put a "tab" or four spaces at the beginning of the line. However, if you are typing in IDLE, a tab is automatically entered and indented. When the block is finished and you no longer need the indentation, delete the "tab" yourself. Emma I found that I needed to indent to create a single block that does the same process. Liam OK! Save and run this program. Emma The score was over 80, so the process was run. What happens if the score is lower than 80? Liam Open a new file in IDLE and write the code like this Liam Save and run this program. Emma Since the score was lower than 80, it was not processed. 10-4 Liam If Else Statement in Python Emma How can I write a process when the conditions are not met? Liam In that case, lets’s use the if else statement. Let's make a program that displays ”Never mind!” "Better luck next time." when the score is lower than 80 points. Emma So if I score lower than 80, the python encourages me. Liam That’s right. Open a new file in IDLE and write the code like this. Liam Save and run this program. Emma Python encouraged me because my score was below 80 points. 10-5 Emma In this lesson, we learned about If statement and if else statement in Python,. Liam Well done!