Soup selection not working if not matched all classes

[Rasheedgm]

Hi,
I am trying to select an element which has class 'article_date' and few other classes. i want to select element by one class but its not working, i had to give all classes in the element. where in my case i cant predict other classes as its created dynamically according to articles.

this is not working when there are other class too in the element
souparticle.find("div", { "class" : "article_date " })

[kovidgoyal]

{"class": lambda x: x and 'article_date' in x.split()}

[Rasheedgm]

THANK YOU