def read_data(fname):
    with open(fname) as f:
        data = f.read().splitlines()
    return data

def remove_comments(data):
    result = []
    for line in data:
        if line.strip() != "":
            if line[0] != "#":
                result.append(line.upper())
    return result

def create_registers(data):
    registers = {}
    for line in data:
        xs = line.split()
        if len(xs) > 1 and xs[1] == "=":    # lazy evaluation   b1 and b2
            registers[xs[0]] = int(xs[2])

        elif len(xs) == 2:
            if xs[1][0] == "R":
                if xs[1] not in registers:
                    registers[xs[1]] = 0
        elif len(xs) == 3:
            pass
        elif len(xs) == 4:
            pass
        else:
            pass
    return registers

def create_labels(data):
    labels = {}
    ino = 0
    for line in data:
        xs = line.split()
        if xs[0][-1] == ":":
            labels[xs[0]] = ino
        if len(xs) == 1 or (len(xs) > 1 and xs[1] != "="):
            ino = ino + 1
    return labels

def create_labels_from_code(code):
    pass# simple for-loop accumulator code on code


def create_code(data):
    code = []
    for line in data:
        xs = line.split()
        ....
        if "INC" in xs:
            if len(xs) == 1 or len(xs) > 3:
                print("INVALID INSTRUCTION")
                return []
            elif len(xs) == 2:
                code.append({'opcode':"INC","register1":xs[1]})
            else:
                code.append({'labeldef':xs[0][:-1].upper(),'opcode':"INC","register1":xs[2].upper()})
        elif "DEC" in xs:
            pass
        elif "CLR" in xs:
            pass
        elif "MOV" in xs:
            pass
        elif "JMP" in xs:
            pass
        elif "CONTINUE" in xs:
            pass
        else:
            pass

    ....
    ...
    return code


def run_ram_program(registers,code,labels):
    pc = 0
    while True:
        if opcode ==
        elif
        elif
        ...
        else:
    

fname = "p2.ram"
data = read_data(fname)
data = remove_comments(data)
#print(data)
registers = create_registers(data)
code = create_code(data)
#labels = create_labels(data)

labels = create_labels_from_code(code)
print(registers)
print(labels)
#print(registers,code,labels)

if code == []:
    print("I cannot run your program")
else:
    ...

print input
run_ram_program(registers,code,labels)
print output

{'R1': 200, 'R2': 50, 'R22': 0}
{'N1:': 1, 'N2:': 3, 'N3:': 9, 'N4:': 11}

xs = ["MOV","R3","R2"]