Witryna3 wrz 2015 · TypeError: 'type' object is not iterable - Iterating over object instances. I am working on a project and I would like to make one of my classes iterable. To the … Witryna23 sie 2024 · 1 Answer. It looks like you aren’t actually storing anything in the lists you create in your function. Also you are creating an empty list called stds but returning stddevs (which you never define). Edit: I think you are trying to use sklearns GridSerachCV but you never call the either. Here is some code to get you started: …
python报错------NoneType’ object is not iterable_遍历的对象为 …
WitrynaNoneType means that instead of an instance of whatever Class or Object you think you're working with, you've actually got None. That usually means that an assignment or function call up above failed or returned an unexpected result. Share Improve this answer Follow edited Dec 19, 2024 at 15:15 answered Jan 20, 2012 at 23:40 g.d.d.c 46.3k 9 … Witryna12 lip 2024 · As @TomKarzes points out, Y[i] is None for at least one value of i.Also, note in this scenario you have no reason to index over i: just index over the elements of Y instead as this adds readability. Combining this with the check for None, we get:. ranges = [] for item in Y: if item is None: pass # this means do nothing. dickerson ford york sc
typeerror:
Witryna31 paź 2014 · When the function is called with 0 as parameter the return is skipped and the function will return None. You could add an explicit return as the last line of your function. In the example given in this answer it would look like this. def get_values (x): if x: return 'foo', 'bar' return None, None Update after seing the code Witryna31 paź 2014 · When the function is called with 0 as parameter the return is skipped and the function will return None. You could add an explicit return as the last line of your … Witryna5 lis 2024 · Type错误：“NoneType”对象不是可迭代的 一般出现在 将None返回给了多个值 遍历的对象为None 例 : item = None for i in item: print (i) 解决 :加判断item是否为None即可 【解析】 这个错误提示一般发生在将None赋给多个值时。 【案例】 定义了如下的函数 def test (): if value == 1: a = b = 1 return a,b value = 0 a,b = test () 执行这 … dickerson football player