It is difficult for me to articulate the benefits I've received by simply asking a senior developer for advice with regards to a specific aspect of my craft. More than just telling me the "correct way to do things," often times, they fill this essential gap that can't be filled by looking through tutorials or articles: that we don't know what we don't know, and how can we search for a feautere/language/technique/idiom/pattern to learn more about it when we don't know it exists or the problem it solves? Also, I found it particularly useful to learn how to be more pragmatic than theoretical at my job as a developer, and I enjoy it a lot more because of this.
As a consequence of this, I consider it absolutely essential that I have a mentor (I'm still a junior dev) at any potential job I get in the near future, at least.
How do I express to my potential employer that I am looking for mentorship from their more senior team members, without sounding like my skills are lacking or that I'm not independent?