Selection
Computer Science: KS3, topic 2.3.6
If-statements
If-statements are the only form of selection in Python.
If statements
- Conditions can be tested using the if statement. For example:
- if (x > 50):
- Any code written in an indented block after this line will be executed if the condition is true.
Else statements
- We can also add an else statement to the end, for example:
- else:
- This will only execute the following indented block if the condition was false.
Elif statements
- Elif statements can be added between if and else blocks.
- They will execute if the condition before it was false, and the condition following it is true.
Example
Test yourself on Selection
List the three keywords that may be used in a Python if statement.