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wiki2:python:code_notes
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| Ambos lados, revisión anterior Revisión previa Próxima revisión | Revisión previa | ||
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wiki2:python:code_notes [2018/12/12 07:22] alfred [Tricks] |
wiki2:python:code_notes [2020/06/20 10:02] (actual) |
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| Línea 1: | Línea 1: | ||
| - | ====== Python code notes ====== | + | ====== Python snippets ====== |
| ===== Getters & setters ===== | ===== Getters & setters ===== | ||
| <code python> | <code python> | ||
| Línea 47: | Línea 47: | ||
| </code> | </code> | ||
| - | ===== Conditional tricks ===== | + | ===== Conditional tricks (Short circuit) ===== |
| You can use the conditional operators ''and'' and ''or'' for deciding how to execute code. Next piece won't print ''hola''. | You can use the conditional operators ''and'' and ''or'' for deciding how to execute code. Next piece won't print ''hola''. | ||
| <code> | <code> | ||
| Línea 54: | Línea 54: | ||
| | | ||
| False and foo() | False and foo() | ||
| + | </code> | ||
| + | |||
| + | ===== See the low level actions ===== | ||
| + | |||
| + | We can see the low level actions of a function with the ''dis'' package: | ||
| + | |||
| + | <code python> | ||
| + | >>> def func(a): | ||
| + | ... a += 10 | ||
| + | ... return a | ||
| + | ... | ||
| + | >>> import dis | ||
| + | >>> dis.dis(func) | ||
| + | 2 0 LOAD_FAST 0 (a) | ||
| + | 3 LOAD_CONST 1 (10) | ||
| + | 6 INPLACE_ADD | ||
| + | 7 STORE_FAST 0 (a) | ||
| + | |||
| + | 3 10 LOAD_FAST 0 (a) | ||
| + | 13 RETURN_VALUE | ||
| </code> | </code> | ||
wiki2/python/code_notes.1544599322.txt.gz · Última modificación: 2020/05/09 09:24 (editor externo)
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