mood music on hold updater python script and ansible playbook

mood_ansible_playbook.yml

---
 - hosts: all
   sudo: true

   tasks:
     - block:
       - name: ping
         ping:

       - name: delete old moh files
         shell: rm /var/lib/asterisk/moh/*.wav
         ignore_errors: yes

       - name: copy new moh files
         copy:
           src: /root/mood/current_moh
           dest: /tmp/moh_files
           mode: 0777

       - name: move new moh files into place
         shell: mv /tmp/moh_files/current_moh/*.wav /var/lib/asterisk/moh/

       - name: reload asterisk
         shell: asterisk -rx "moh reload"

       - name: reboot
         shell: reboot

       rescue:
         - name: task failure
           shell: echo "The Ansible Mood playbook failed!" | mail -s "Mood Ansible Failure!" clientalerts@dilse.it
           delegate_to: localhost

mood_processor.py

#!/usr/bin/env python3
# requires ansible, ffmpeg-normailze, and mailutils packages on ansible host
# imports
import os
import pathlib

# set up directory vars
new_files_dir = "/root/mood/new_moh"
current_moh_dir = "/root/mood/current_moh"
archive_dir = "/root/mood/old/old_moh"
# check new files directory and validate there is at least one .wav file
if list(pathlib.Path(new_files_dir).glob("*.wav")):
    # rename new files
    i = 1
    for wav_file in list(pathlib.Path(new_files_dir).glob("*.wav")):
        os.system("mv " + str(wav_file).strip("'") + " " + new_files_dir + "/moh_" + str(i) + ".wav")
        i = i + 1
    # normalize files with ffmpeg-normalize
    for wav_file in list(pathlib.Path(new_files_dir).glob("*.wav")):
        os.system("ffmpeg-normalize -f -lrt 6.0 " + str(wav_file).strip("'") + " -o " + str(wav_file).strip("'"))
    # archive current music on hold files
    os.system('cp -a ' + current_moh_dir + ' ' + archive_dir + '.$(date "+%Y%m%d")')
    # clean current_moh_dir
    os.system('rm ' + current_moh_dir + '/*.wav')
    # move normalized files to current_moh_dir
    os.system('mv ' + new_files_dir + '/*.wav ' + current_moh_dir)
    # run ansible playbook to delete old moh files, copy current moh files, reload asterisk, and reboot
    os.system('sudo /usr/bin/python2.7 /usr/local/bin/ansible-playbook /root/mood/mood_ansible_playbook.yml -u root -vv 2>&1 | tee  /root/mood/mood_playbook.log')
else:
    # if no valid wav files send alert email
    os.system('echo "There are no valid files to process!" | mail -s "Mood Processor Failure!" clientalerts@dilse.it')
    print("File validation failure!")