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fix cast_list

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lanzhiwang
2019-10-09 17:14:06 +08:00
parent a84088a3a0
commit 1afbd00f7e
1 changed files with 4 additions and 1 deletions
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5
snippets/cast_list.md
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@ -9,10 +9,13 @@ Use `isinstance()` to check if the given value is a list and return it as-is or
```py ```py
def cast_list(val): def cast_list(val):
return val if isinstance(val, list) else [val] if isinstance(data, (tuple, list, set, dict)): return list(data)
elif data: return [data]
else: return []
``` ```
```py ```py
cast_list('foo'); # ['foo'] cast_list('foo'); # ['foo']
cast_list([1]); # [1] cast_list([1]); # [1]
cast_list(('foo', 'bar')); # ['foo', 'bar']
``` ```