How often have people asked what language / technology you work in and when you answered Python they got a little confused and asked, what can you actually build with Python? What type of apps? The implication being Python is just a notch above Bash scripts. That real things aren't built with Python but rather Java, C#, Objective-C and so on.
Mahmoud Hashemi and I might be able to help you put some real evidence and experience behind your response. On episode 54 of Talk Python To Me, I talk with Mahmoud about his new online course he wrote for O'Reilly entitled Enterprise Software in Python. You'll hear many real-world examples from his experience inside PayPal and more.