Find phrase in word processor documents (doc, docx, odt)

#!/usr/bin/env python3

#Dependencies: catdoc, Python 3.x
#on Ubuntu, you can install it with this: sudo apt-get install catdoc

import subprocess, shlex, glob, os, zipfile, re, html.parser, sys;

def files_with_word(word, path, delete=None):
    files_with_word_list=[];
    for x in glob.glob(os.path.join(path, "*.doc")):
        command=shlex.split('catdoc -w "' + x + '"');
        file_text, err=subprocess.Popen(command, stdout=subprocess.PIPE).communicate();
        if word in str(file_text):
            files_with_word_list.append(x);
    for x in glob.glob(os.path.join(path, "*.docx"))+glob.glob(os.path.join(path, "*.odt")):
        z=zipfile.ZipFile(x);
        zippath="word/document.xml";
        if x.endswith("odt")==True:
            zippath="content.xml";
        file_text=z.read(zippath).decode();
        file_text=re.sub(r"<[^>]*>", r"", file_text)[1:];
        file_text=html.parser.HTMLParser().unescape(file_text);
        #print(file_text); #This is for debugging purposes.
        if word in file_text:
            files_with_word_list.append(x);
    print("\n".join(files_with_word_list));
    if delete=="delete":
        for x in files_with_word_list:
            print("Deleting " + x);
            os.remove(x);
    elif delete==None:
        pass;
    else:
        raise ValueError("The third argument must either be the word, ‘delete’, or it must be omitted.");

try:
    files_with_word(sys.argv[1], sys.argv[2], sys.argv[3]);
except IndexError:
    files_with_word(sys.argv[1], sys.argv[2]);