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def recurse(input_file):
    """Takes a file and recursively evaluates lines to get an answer."""
    children, value = split_line(input_file.read())
    # All operations we implement are binary, we should either have zero
    # children or two.  Anything else is an error.
    if children == 0:
        return float(value)
    elif children == 2:
        return operate(value,
                       recurse(input_file.read()),

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def evaluation(tree):
    print tree.label
    if len(tree.children) == 0:
        return tree
    else:
        return apply_op(tree.label, evaluation(tree.children[0]), evaluation(tree.children[1]))

sposterkil

#!/usr/bin/env python
# -*- coding: utf-8 -*-

import sys
from collections import deque
from pr01 import prefixParser

USAGE_MESSAGE = "pr01 [file]"
EXTENDED_MESSAGE = '''
Takes a file as an argument or on stdin, parses it as an expression tree, and

sposterkil

def get_instructions(pattern_list):
    """Takes a list of regex patterns and compiles them to a list of VM
    instructions via the lexc tool, and then returns that list."""
    # The lexing compiler should be in the same folder as us
    lexexec = os.path.abspath(os.path.join(sys.path[0], "lexc"))
    # (Yes, this giant chain of os.path things checks that)
    if not os.path.isfile(os.path.abspath(os.path.join(sys.path[0], "lexc"))):
        print lexexec
        raise IOError("Lexc executable not in same folder as program.")
    command = [lexexec] + ["--pattern=%s" % str(pattern)

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Found the Vertex shader, loading it.
Found the Control shader, loading it.
ERROR: 0:4: Invalid use of layout 'vertices'
ERROR: 0:15: Use of undeclared identifier 'gl_InvocationID'
ERROR: 0:15: Use of undeclared identifier 'gl_InvocationID'
ERROR: 0:17: Use of undeclared identifier 'gl_InvocationID'
ERROR: 0:18: Use of undeclared identifier 'gl_TessLevelInner'
ERROR: 0:19: Use of undeclared identifier 'gl_TessLevelInner'
ERROR: 0:20: Use of undeclared identifier 'gl_TessLevelOuter'
ERROR: 0:21: Use of undeclared identifier 'gl_TessLevelOuter'

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        with NamedTemporaryFile(suffix=".s", mode='rw+b') as asm_temp:
            asm_temp.write(get_asm(source_file))
            asm_temp.write(get_lib())
            log("> Compiling with gcc...")
            subprocess.call(["gcc",
                             "-m32",
                             "-o", output_file.name,
                             asm_temp.name
                             ])

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        with open("a.s", "w") as asm_temp:
            asm_temp.write(get_asm(source_file))
            asm_temp.write(get_lib())
        with open("a.s", "r") as asm_temp:
            log("> Compiling with gcc...")
            subprocess.call(["gcc",
                             "-m32",
                             "-o", output_file.name,
                             asm_temp.name
                             ])

sposterkil

int fib(int n)
{
	if (n <= 2)
	{
		return 1;
	}

	else
	{
		return fib(n - 1) + fib(n - 2);

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	char path[PATH_MAX];
	// We use this getpwuid(geteuid()) construct instead of cuserid()
	// for portability (Works on OS X and Linux)
	printf("I ran in the directory %s, as effective user %s, real user %s.\n",
		   getcwd(path, PATH_MAX),
		   getpwuid(geteuid())->pw_name,
		   getpwuid(getuid())->pw_name);

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    int shm_id = shmget(SHM_KEY, 1024, 0777);
    my_shared = (struct common *)shmat(shm_id, 0, 0);
    if ((my_shared->bridge_dir == GOING_EAST ||
         my_shared->bridge_dir == NONE) &&
         (my_shared->xed_count < 4 &&
         (my_shared->xed_count + my_shared->xing_count) < 5)) {