Conditional statements in MicroPython on Raspberry Pi Pico are used to make decisions based on certain conditions. They allow us to execute a block of code only if a certain condition is true, or to execute a different block of code if the condition is false.
In MicroPython, we use the if, elif, and else keywords to create conditional statements. The general syntax for an if statement is:
if condition:
# Code to execute if condition is True
If the condition is true, then the code inside the block is executed. If the condition is false, then the code inside the block is skipped.
Here’s an example of an if statement:
temperature = 25
if temperature > 30:
print("It's hot outside!")
In this example, the condition temperature > 30 is false, so the code inside the block is not executed.
We can also use the else keyword to specify what code should be executed if the condition is false:
temperature = 25
if temperature > 30:
print("It's hot outside!")
else:
print("It's not that hot outside.")
In this case, since the condition is false, the code inside the else block is executed, and the output would be “It’s not that hot outside.”
We can also use the elif keyword to check multiple conditions:
temperature = 25
if temperature > 30:
print("It's hot outside!")
elif temperature > 20:
print("It's warm outside.")
else:
print("It's not that hot outside.")
In this example, the first condition is false, so the elif condition is checked. Since temperature > 20 is true, the code inside the elif block is executed, and the output would be “It’s warm outside.”
Conditional statements can also be nested inside each other, to create more complex logic. For example:
x = 5
y = 10
if x > 0:
if y > 0:
print("Both x and y are positive.")
else:
print("x is positive but y is not.")
else:
if y > 0:
print("y is positive but x is not.")
else:
print("Both x and y are negative.")
In this example, the output would be “Both x and y are positive.” since both x and y are greater than 0.
elif statements can be nested in Python and MicroPython on Raspberry Pi Pico. You can use them to create more complex conditions that depend on multiple variables or factors.
Here’s an example of nested elif statements in MicroPython on Raspberry Pi Pico:
x = 5
y = 10
if x > y:
print("x is greater than y")
elif x < y:
print("x is less than y")
if x < 0:
print("x is negative")
elif x == 0:
print("x is zero")
else:
print("x is positive")
else:
print("x is equal to y")In this example, if x is less than y, the program checks whether x is negative, zero, or positive using nested elif statements. If x is greater than y, the program prints a message saying so. And if x is equal to y, the program prints a message saying that as well.
Note that when you nest elif statements, you must make sure that the indentation is correct to avoid syntax errors.
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