r/programmingcirclejerk • u/papavoikos • May 06 '15

We put Python inside your Python inside... wait for it... Javascript!!!

http://pypyjs.org/
19 Upvotes

100% Upvoted

11 comments sorted by

7

u/atheist_apostate May 06 '15

And I crashed it:

for i in range(1, 1000000):
    print "hello world"

8

u/Sheepshow EXTREME CLOJURESCRIPT May 06 '15

Problem is string literals. It has to make millions of little strings. NEVER USE STRING LITERALS.

Can't believe anybody let you out of HackerBootCamp.

3

u/[deleted] May 08 '15

Bro, speaking of string literals, you also forgot that the primary weakness of a strongly OO language like Python is that literally everything is an object! This means that literally ALL of those strings, even if you use battle-tested Enterprise Performance Tuning like writing insanely long procedural code full of break and continue statements, all those things are still objects in Python, carrying huge amounts of hashtable lookup and reference value chasing!

In a close-to-metal language like Javascript or Nim, or a pragmatic language like Go that is almost as close-to-metal (with some compromises made for speed of development?), it's literally impossible to have this problem! I think that a lot of functional languages avoid this problem too (although some of them like Scala are even more OO than Java!!! OMG so much overhead!), but those are for the smart guys, and all that compile-time TCO is still a huge performance hit that it's hard to justify when your startup is still pre-failure and only has 20 non-bot unique visitors a day!

1

u/Lopsidation Jul 30 '15 edited Jul 30 '15 
>>> from random import random
>>> L = [random() for i in xrange(10000)]
>>> L[5000:5010]
[0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0]

Web scale.

0

u/[deleted] May 06 '15

[deleted]

6

u/papavoikos May 06 '15

You could feed it back to the server for further optimizations. Omg guys I just figured out how to outspeed C.

8

u/[deleted] May 06 '15

  1. Create C to C optimizing compiler.

  2. Pipe its output back to itself.

  3. ????

  4. Profit!

0

u/[deleted] May 06 '15

[deleted]

7

u/[deleted] May 06 '15

WTF it's python2, which isn't as webscale as python3

You must not scale in Pythonland very often. Python3 (really, Python 2.7) is literally the worst thing to happen to programming since VB6. Just because 3.4 finally has stdlib async doesn't mean it's webscale async (though at least like Node they know they need to stay single-threaded for the most close-to-metal performance thanks to zero context shifting).

Besides, Python 3 still doesn't even have npm go Nim integration. Why would I use it all.

0

u/[deleted] May 06 '15

[deleted]

3

u/[deleted] May 06 '15

You clearly aren't a member of the Python Community if you prefer replacing Magical Python Statements from the Python Data Model with vanilla function expressions, or any Python > 2.6 (the last real Python). Have you considered joining the Ruby Community?

4

u/[deleted] May 06 '15

Python2 is more pragmaticTM.

2

u/[deleted] May 07 '15 
$> uname -a
>> Linux awesome.server.net 2.6.32-431.29.2.el6.x86_64
$> python --version
>> Python 2.6.6
$> which python  #EDIT almost forgot this one!
>> /usr/bin/python #remember, **always** use the system runtimes for the fastest Docker/VM deploy!

CONFIRMED, Pypy.js is officially Enterprise Strength!