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22 lines
476 B
Markdown
22 lines
476 B
Markdown
5 years ago
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# List Comprehensions
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list comprehensions jsou super.
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Dovolujou zkratit kod uplne strasne moc.
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Je to prakticky `for` kterej dovoluje filtrovat.
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Tohle:
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```python
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# chceme sebrat vsechna sudo cisla do 1000
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n = []
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for i in range(1000):
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if i % 2 == 0:
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n.append(i)
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print(n)
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```
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Je ekvivalence:
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```python
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n = [i for i in range(1000) if i % 2 == 0]
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print(n)
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```
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coz muzeme cist jako: "n je seznam vsech cisel do 1000 kde zbytek z deleni dvemi je nula, tl;dr vsech sudych cisel"
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