My first program in 2014!

2014.py

import sys

nums = "123456789"
opes = ["", "+", "-", "*", "/"]

def gen(remaining_nums, ex):
    ex = ex + remaining_nums[0]
    remaining_nums = remaining_nums[1:]
    if not remaining_nums:
        yield ex
    else:
        for o in opes:
            e = ex + o
            for y in gen(remaining_nums, e):
                yield y

for ex in gen(nums, ""):
    if eval(ex) == 2014:
        sys.stdout.write("%s\n" % ex)
    elif eval("-" + ex) == 2014:
        sys.stdout.write("-%s\n" % ex)