Commit 90aa92
2026-07-31 08:36:06 Niklas Polke: Create Python Property| /dev/null .. python/property.md | |
| @@ 0,0 1,39 @@ | |
| + | # Python Property |
| + | |
| + | ## Overview |
| + | ```python |
| + | class dog: |
| + | def __init__(self): |
| + | self._name = "Bello" |
| + | |
| + | @property |
| + | def name(self) -> str: |
| + | print("Setter method called") |
| + | return self._name |
| + | |
| + | @name.setter |
| + | def name(self, name): |
| + | if isinstance(name, str): |
| + | self._name = name |
| + | print("Getter method called") |
| + | else: |
| + | return |
| + | ``` |
| + | ```python |
| + | snowy = dog() |
| + | snowy.name = "Snowy" |
| + | snowy.name |
| + | ``` |
| + | ```python |
| + | Setter method called |
| + | Getter method called |
| + | 'Snowy' |
| + | ``` |
| + | |
| + | ## Benefits |
| + | - **@property**: for the caller name becomes an attribute (not a method any more) |
| + | - no more use of parentheses when calling a getter: `a = snowy.name` instead of `a = snowy.name()` |
| + | - the hidden getter still can return a deep copy or converted attribute (bytearray instead of byte, list instead of set, ...) |
| + | - **@name.setter**: for the caller name can set by `=` |
| + | - no more use of parentheses when calling a setter: `snowy.name = "Snowy"` instead of `snow.name("Snowy")` |
| + | - the hidden setter still can use type checks or throw errors or do conversions |