Imma let you finish but, Python is the best programming language of all time. IoT is only for basement dwellers, and take a REST from your hate m8. You just said it runs slow on lower hardware, but said it runs fast on a Macbook Pro? You must not know what lower hardware is right?
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You did a code only saying Hello World? For one thing you don't understand how complicated strings are in programming, computers don't speak "strings" they speak 1's and 0's, another thing is how you ran it, you likely ran it on defaults and are crying about that? Tell Google to stop using Python, and Dropbox, Pinterest, Hulu, Netflix, Instagram, and whatever else you use that is likely powered by Python. It's good enough, I don't see you doing serious C++ work on here to be talking so highly. If you can't code a simple scripting language correctly don't tell me to shut up? You're using a $35 piece of crap to write code in and you're whining about Python based on that? Nobody is going to run a Habbo server on a Raspberry Pi, only to look like a Special person when it hits high enough load. This isn't your IoT community where you need to be closer to Assembly to do anything useful. Everyday people could care less about IoT anyway, right now it is mostly a hobbyist thing. I'd never want half of my house to be on the internet, it's like leaving all your doors to everything you own unlocked.
As Caustik said, we're not here to be Google scale, nor are we here to cater to $35 crappy SBC's or Microcontrollers? As for enterprise experience, Python is used in enterprise. Tell Reddit their Python doesn't scale sometime, or Hulu, or Netflix, then go look at Twitter and how Ruby is going for them, didn't last too long for them. Python gets the job done, and pays for my bills, so till it doesn't pay for my bills, Python is the best programming language in the world. Try making a GUI with Ruby or PhP or Perl, I'll have made one in Python by the time you figure out how to print "Hello World" on the screen, no pun intended.