Fork of @johnmyleswhite's Julia vs Python.

JuliaGlobals

total = 0
N = 300

start_time = time()

for a in 0:(N - 1)
	for b in 0:(N - 1)
		for c in 0:(N - 1)
			if a^2 + b^2 == c^2
				total = total + 1
			end
		end
	end
end

end_time = time()

end_time - start_time

# Repeat now that JIT has done its work

total = 0
N = 300

start_time = time()

for a in 0:(N - 1)
	for b in 0:(N - 1)
		for c in 0:(N - 1)
			if a^2 + b^2 == c^2
				total = total + 1
			end
		end
	end
end

end_time = time()

println(end_time - start_time)

JuliaLocals

function loop(N::Integer)
	total = 0

	start_time = time()

	for a in 0:(N - 1)
		for b in 0:(N - 1)
			for c in 0:(N - 1)
				if a^2 + b^2 == c^2
					total = total + 1
				end
			end
		end
	end

	end_time = time()

	return end_time - start_time
end

loop(300)

# Repeat now that JIT has done its work

println(loop(300))

loops.py

from time import time

total = 0
N = 300
start = time()
for a in range(N):
  for b in range(N):
    for c in range(N):
      if a**2 + b**2 == c**2:
        total = total + 1
end = time()
print('global')
print(int(round((end - start)*1000)))

def foo():
  total = 0
  N = 300
  start = time()
  for a in range(N):
    for b in range(N):
      for c in range(N):
        if a**2 + b**2 == c**2:
          total = total + 1
  end = time()
  print('local')
  print(int(round((end - start)*1000)))

foo()

# $ ./bin/pypy ~/work/gist/5556298/loops.py
# global
# 218
# local
# 57

Python

total = 0
N = 300

from time import time

start = time()

for a in range(N):
	for b in range(N):
		for c in range(N):
			if a**2 + b**2 == c**2:
				total = total + 1

end = time()

print(end - start)