# keyPressed()
## Example
```python
def keyPressed():
...
text(key,200,200)
```
## Syntax
```python
def keyPressed():
# execute this code when any key is pressed
...
```
Full Code Example
```python
def setup():
createCanvas(300, 300)
frameRate(5)
fill(255, 164, 28)
stroke(44, 129, 237)
strokeWeight(2)
w = 150
h = 150
def draw():
background(255, 79, 132)
ellipse(150, 150, w, h)
def keyPressed():
global w, h
if keyCode == 37:
w -= 30
elif keyCode == 38:
h += 30
elif keyCode == 39:
w += 30
elif keyCode == 40:
h -= 30ython
```
## Description
Like [draw()](https://learnpython.strivemath.com/p5-python-web/reference/controlling-the-environment/draw) and [setup()](https://learnpython.strivemath.com/p5-python-web/reference/controlling-the-environment/setup) functions, this function is a built-in function that we override. That is, it **knows when** to run, but it **doesn't know what** do? That's why in the syntax, we just seem to define it, but not call it later.
So, this function runs **when a key is pressed (once it's hit, regardless if you hold it or release it later)**.
Built-in variables like [`keyCode`](https://learnpython.strivemath.com/p5-python-web/built-in-variables/keyboard#keycode) and [`key`](https://learnpython.strivemath.com/p5-python-web/built-in-variables/keyboard#key) can be used to know which key was pressed.
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