Fish interpreter

import sys
from random import randint

file = sys.argv[1]
code = open(file)
program = code.read()

print(str(program))

#--------------#
#Initialization#
#--------------#

stdin = sys.argv[2]
prgmlist = program.splitlines()
length = len(prgmlist)
prgm = {}
for x in range(0,length-1):
    prgm[x+1] = list(prgmlist[x])
stacks, str1, str2, cmdx, cmdy, face, register, cmd = {"now":[]}, 0, 0, 0, 1, "E", 0, None
strparse1, strparse2 = 0, 0

#---------#
#Functions#
#---------#

#Move pointer forward#
def forward(facing):
    global cmdx
    global cmdy
    if facing == "N":
        cmdy += 1
    if facing == "E":
        cmdx += 1
    if facing == "S":
        cmdy -= 1
    if facing == "W":
        cmdx -= 1

#Execute code under pointer#
def evaluate(cmd):
    print(cmd)
    global face
    global strparse1
    global strparse2
    global str1
    global str2
    global cmdx
    global cmdy
    global register
    global stacks

    #String parsing#
    if cmd == '"':
        if strparse1 == 0:
            strparse1 = 1
        elif strparse1 == 1:
            strparse1 = 0
    elif strparse1 == 1 and not cmd == '"':
        stacks["now"].insert(0,cmd)
    elif cmd == "'":
        if strparse2 == 0:
            strparse2 = 1
        elif strparse2 == 1:
            strparse2 = 0
    elif strparse2 == 1 and not cmd == "'":
        stacks["now"].insert(0,cmd)

    #Flow#
    elif cmd == "^":
        face = "N"
    elif cmd == ">":
        face = "E"
    elif cmd == "v":
        face = "S"
    elif cmd == "<":
        face = "W"
    elif cmd == "|":
        if face == "E":
            face = "W"
        elif face == "W":
            face = "E"
    elif cmd == "_":
        if face == "N":
            face = "S"
        elif face == "S":
            face = "N"
    elif cmd == "/":
        if face == "N":
            face = "E"
        elif face == "E":
            face = "N"
        elif face == "S":
            face = "W"
        elif face == "W":
            face = "S"
    elif cmd == "\\":
        if face == "N":
            face = "W"
        elif face == "E":
            face = "S"
        elif face == "S":
            face = "E"
        elif face == "W":
            face = "N"
    elif cmd == "x":
        rand = randint(1,4)
        if rand == 1:
            face = "N"
        if rand == 2:
            face = "E"
        if rand == 3:
            face = "S"
        if rand == 4:
            face = "W"
    elif cmd == "!":
        forward(face)
    elif cmd == "?":
        if stack[0] == 0:
            forward()
    elif cmd == ".":
        cmdx = stacks["now"][0]
        cmdy = stacks["now"][1]
        stacks["now"].pop[0]
        stacks["now"].pop[0]

    #Ops#
    elif cmd == "+":
        stacks["now"].insert(0,stacks["now"][1] + stacks["now"][0])
        stacks["now"].pop[1]
        stacks["now"].pop[1]
    elif cmd == "-":
        stacks["now"].insert(0,stacks["now"][1] - stacks["now"][0])
        stacks["now"].pop[1]
        stacks["now"].pop[1]
    elif cmd == "*":
        stacks["now"].insert(0,stacks["now"][1] * stacks["now"][0])
        stacks["now"].pop[1]
        stacks["now"].pop[1]
    elif cmd == ",":
        stacks["now"].insert(0,stacks["now"][1] / stacks["now"][0])
        stacks["now"].pop[1]
        stacks["now"].pop[1]
    elif cmd == "%":
        stacks["now"].insert(0,stacks["now"][1] % stacks["now"][0])
        stacks["now"].pop[1]
        stacks["now"].pop[1]

    #Conditional mods#
    elif cmd == "=":
        if stacks["now"][0] == stacks["now"][1]:
            stacks["now"].pop[0]
            stacks["now"].pop[0]
            stacks["now"].insert(0,1)
        else:
            stacks["now"].pop[0]
            stacks["now"].pop[0]
            stacks["now"].insert(0,0)
    elif cmd == "(":
        if stacks["now"][1] < stacks["now"][0]:
            stacks["now"].pop[0]
            stacks["now"].pop[0]
            stacks["now"].insert(0,1)
        else:
            stacks["now"].pop[0]
            stacks["now"].pop[0]
            stacks["now"].insert(0,0)
    elif cmd == ")":
        if stacks["now"][1] > stacks["now"][0]:
            stacks["now"].pop[0]
            stacks["now"].pop[0]
            stacks["now"].insert(0,1)
        else:
            stacks["now"].pop[0]
            stacks["now"].pop[0]
            stacks["now"].insert(0,0)

    #String parsing#
    elif cmd == '"':
        if strparse1 == 0:
            strparse1 = 1
        elif strparse1 == 1:
            strparse1 = 0
    elif cmd == "'":
        if strparse2 == 0:
            strparse2 = 1
        elif strparse2 == 1:
            strparse2 = 0

    #Stack manipulation#
    elif cmd == ":":
        stacks["now"][0] + stacks["now"]
    elif cmd == "~":
        stacks["now"].pop[0]
    elif cmd == "$":
        stack0 = stacks["now"][1]
        stack1 = stacks["now"][0]
        stacks["now"][0] = stack0
        stacks["now"][1] = stack1
    elif cmd == "@":
        stack0 = stacks["now"][1]
        stack1 = stacks["now"][2]
        stack2 = stacks["now"][0]
        stacks["now"][0] = stack0
        stacks["now"][1] = stack1
        stacks["now"][2] = stack2
    elif cmd == "{":
        lowstack = len(stacks["now"]) - 1
        stacks["now"].append[stacks["now"][0]]
        stacks["now"].pop[0]
    elif cmd == "}":
        lowstack = len(stacks["now"]) - 1
        stacks["now"].insert(0,stacks["now"][lowstack])
        stacks["now"].pop[0](lowstack + 1)
    elif cmd == "r":
        stack = list(reversed(stacks["now"]))
    elif cmd == "l":
        stacks["now"].insert(0,len(stacks["now"]))
    elif cmd == "[":
        param = stacks["now"][0]
        stacks["now"].pop[0]
        for x in range(0,param):
            newstack = newstack.append[stacks["now"][0]]
            stacks["now"].pop[0]
        stacks[len(stacks)] = stacks["now"]
        newstack
    elif cmd == "]":
        stacks["now"].insert(0,stacks["now"][len(stacks)])
        "".join(stacks["now"])
        stacks.stacks["now"].pop[0](len(stacks), None)

    #Input and output#
    elif cmd == "o":
        sys.stdout.write(chr(stacks["now"][0]))
    elif cmd == "n":
        sys.stdout.write(int(stacks["now"][0]))
    elif cmd == "i":
        stacks["now"].insert(0,stdin.read())

    #Literals#
    elif cmd in range(0,9):
        stacks["now"].insert(0,int(cmd))
    elif cmd == "a":
        stacks["now"].insert(0,10)
    elif cmd == "b":
        stacks["now"].insert(0,11)
    elif cmd == "c":
        stacks["now"].insert(0,12)
    elif cmd == "d":
        stacks["now"].insert(0,13)
    elif cmd == "e":
        stacks["now"].insert(0,14)
    elif cmd == "f":
        stacks["now"].insert(0,15)

    #Other#
    elif cmd == " ":
        dummy = 1
    elif cmd == "&":
        register = stacks["now"][0]
        stacks["now"].pop[0]

while cmd != ";":
    evaluate(cmd)
    forward(face)
    cmd = prgm[cmdy][cmdx]