#Beyond compare 3 tutorial code#

#Beyond compare 3 tutorial code#

Let’s rewrite the code from the example above to have strings that print out each of the letter grades. To run this code, we will need one if statement, three elif statements, and an else statement that will handle all failing cases.

64 or below is equivalent to an F grade.

90 or above is equivalent to an A grade.

In the grade.py program, let’s rewrite the code so that there are a few letter grades corresponding to ranges of numerical grades: What if we want to have more than three possibilities, though? We can do this by writing more than one elif statement into our code.

If the variable balance is set to a negative number, the output will be the string from the if statement ( Balance is below 0, add funds now or you will be charged a penalty).

If the variable balance is set to a positive number, we will receive the output from the else statement ( Your balance is 0 or above.).If the variable balance is equal to 0 we will receive the output from the elif statement ( Balance is equal to 0, add funds soon.).Now, there are three possible outputs that can occur once we run the program: if balance < 0 : print ( 'Balance is below 0, add funds now or you will be charged a penalty.' ) elif balance = 0 : print ( 'Balance is equal to 0, add funds soon.' ) else : print ( 'Your balance is 0 or above.' ) The elif statement will be placed between the if statement and the else statement as follows:Īccount.py.

In the bank account program, we may want to have three discrete outputs for three different situations: The elif or else if statement looks like the if statement and will evaluate another condition. For this, we will use an else if statement, which is written in Python as elif. In many cases, we will want a program that evaluates more than two possible outcomes. So far, we have presented a Boolean option for conditional statements, with each if statement evaluating to either true or false. To get the first if statement to print, we can rewrite the value to a negative number.īy combining an if statement with an else statement, you are constructing a two-part conditional statement that will tell the computer to execute certain code whether or not the if condition is met. Here, we changed the balance variable value to a positive number so that the else statement will print. We will start with the if statement, which will evaluate whether a statement is true or false, and run code only in the case that the statement is true. If you don’t have a programming environment set up, you can refer to the installation and setup guides for a local programming environment or for a programming environment on your server appropriate for your operating system (Ubuntu, CentOS, Debian, etc.) If statement You should have Python 3 installed and a programming environment set up on your computer or server. This tutorial will take you through writing conditional statements in the Python programming language. Through evaluating conditions and assigning code to run based on whether or not those conditions are met, we are writing conditional code. If they buy 10 oranges or more, calculate a discount of 5% if they buy fewer, then don’t.If he has money in his account, calculate interest if he doesn’t, charge a penalty fee.If the student receives over 65% on her test, report that her grade passes if not, report that her grade fails.Let’s review some examples where we would use conditional statements: By using conditional statements, programs can determine whether certain conditions are being met and then be told what to do next. When we fully execute each statement of a program, moving from the top to the bottom with each line executed in order, we are not asking the program to evaluate specific conditions. With conditional statements, we can have code that sometimes runs and at other times does not run, depending on the conditions of the program at that time. Conditional statements are part of every programming language.