An interactive script to delete time machine backup(s) selectively

main.py

#!/usr/bin/env python3

from pick import Picker
import subprocess

# Install pick first ("pip install pick")
print("Retrieving the backup destination...")
dest = subprocess.check_output("sudo tmutil machinedirectory", shell=True).decode("utf-8")

print("Retrieving the backup list...")
backups = []
res = subprocess.check_output("sudo tmutil listbackups", shell=True)
for line in res.decode("utf-8").split("\n"):
    if len(line):
        backups.append(line.replace(".backup", ""))

# Select backup(s) to delete
def select_all(picker):
    return [(l, 0) for l in backups]

title = "Select backup(s) you want to delete (press '→' to select, 'a' to select all): "
picker = Picker(backups, title, multiselect=True, min_selection_count=1)
picker.register_custom_handler(ord('a'),  select_all)
selected = picker.start()

print(
    "Destination: ", dest, "\n"
    "Selected Backup(s): ", selected, "\n"
)

ans = input("Are you sure to delete these backups? ('Y' to Continue): ")

if ans in ["y", "Y"]:
    print("Removing selected backup(s)")
    for i in range(len(selected)):
        print('Deleting {}...'.format(selected[i][0]))
        subprocess.run("sudo tmutil delete -d {} -t {}".format(dest, selected[i][0]), shell=True)
else:
    print("Canceled.")