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499e9b Niklas Polke 2026-08-06 08:13:49
Create (Default)Dict
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# (Default)Dict
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## Dict
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```python=
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my_dict: dict[str, int] = dict()
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my_dict["hallo"] = 2
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my_dict.pop("falscherKey") ## raise KeyError
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my_dict.pop("falscherKey", None) ## return None
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my_dict.get("hallo", None) ## return 2
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my_dict.pop("hallo", None) ## return 2 and remove "hallo",2 from dict
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for name, value in my_dict.items():
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pass
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```
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## Defaultdict
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```python=
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from collections import defaultdict
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my_dict: defaultdict[str, int] = defaultdict(int)
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my_dict["hallo"] += 2 ## doesn't find "hallo", create "hallo" with 0 and add 2
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```