concat.se.py

def concat():
    t = text("i'm a long text variable! lololololololololololololol")
    textlen = len(t)
    a = array(textlen + 2)
    a[0] = tx.origin
    a[1] = msg.gas
    i = 0
    while i < textlen:
        a[i + 2] = getch(t, i)
        i += 1
    return(a: arr)

tester.py

#!/usr/bin/env python

from ethereum import tester

def init(gas_limit=700000000):
    s = tester.state()
    tester.gas_limit = gas_limit
    return tester.state()

def compile(state, filepath, gas=70000000):
    return state.abi_contract(filepath, gas=gas)

def run(contract, fn, *args):
    return getattr(contract, fn)(*args)

def bin2ascii(bytearr):
    return ''.join(map(chr, bytearr))

c = compile(init(), "concat.se")
result = run(c, "concat")

print bin2ascii(result[2:])