我应该使用哪种警告来标记潜在的类型不兼容性？
我的具体用例如下：
df = pd.DataFrame({'ColName': [10, 20, 60, 70],
'Col2': [1, 2, 3, 4, 5]})
lookup_val = ['10','20']
filter = filter_df(df, 'ColName', lookup_val)
#filter_df is a custom function which filters the df based values & column name
我想警告用户在具有数值的列中查找字符串。我查看documentation，RuntimeWarning似乎最接近。我还查看了其他Python包，它们似乎通常是基类Warning类的子类。不确定这是否很重要，但我只是好奇，如果有一个'正确'的答案。
这就是我想要做的事情：
if looking_up_strings_in_column_with_numbers:
warnings.warn('looking up strings in numbers', CustomWarningClass)
#CustomWarningClass could be a subclass of Warning or maybe RuntimeWarning. My question is which one?