Find Wiimmfi game name and secrets from an executable

name_secrets.py

import subprocess
import sys

if len(sys.argv) != 3:
    exit("Usage: name_secrets.py <DOL or ARM binary> <Wii or DS>")

if sys.argv[2] != "wii" and sys.argv[2] != "ds":
    exit("Platform must be specified as Wii or DS.\nUsage: name_secrets.py <DOL or ARM binary> <Wii or DS>")

string = subprocess.Popen(["strings", sys.argv[1]], stdout=subprocess.PIPE)
out = string.stdout.readlines()
punctuation = [b'!', b'@', b'#', b'$', b'%', b'^', b'&', b'*', b'(', b')', b'{', b'}', b'[', b']', b'|', b'<', b'>', b'?', b',', b'.', b'/', b'\\', b'~', b'`', b'-', b'_', b'+', b'=', b':', b';', b' ', b'"', b'str', b'print', b'mem', b'UU', b'88', b'00']
print("Possible Game Names:\n")
for line in out:
    if sys.argv[2] == "wii":
        platform = b'wii'
    elif sys.argv[2] == "ds":
        platform = b'ds'
    if platform in line:
        if len(line) < 30:
            has_punctuation = False
            for p in punctuation:
                if p in line:
                    has_punctuation = True
            if not has_punctuation:
                print(line.decode("utf-8"))
print("\n")
found = []
dupes = []
print("Possible Secrets:\n")
for line in out:
    if len(line) != 7:
        continue
    has_punctuation = False
    for p in punctuation:
        if p in line:
            has_punctuation = True
    if not has_punctuation:
        if line != line.lower():
            secret = line.decode("utf-8")
            if secret in found:
                found.remove(secret)
                dupes.append(secret)
            elif secret in dupes:
                pass
            else:
                found.append(secret)
for s in sorted(found):
    print(s)