Almost all positions related to Data Science are asking for skill and experience in some specific tools/software/frameworks etc (besides the relevant theoretical knowledge). As a matter of fact, I have the experience of working with some of them during my current or previous job/study.
However, there are few software/frameworks that I learned in my spare time, but I haven't done any work-related projects related to them. So, if they ask me technical questions about them or even give me a task to do during an interview, I can handle it quickly, but I cannot claim that I used them in my previous work experience.
Especially for job positions which directly ask for excellent expertise or knowledge in these tools, can I state that I do posses such qualifications or not?