Sublime Text 3 plugin to run a terminal command based on the contents of the line that the cursor is on

OpenJournalReferencedOnThisLine.py

import sublime
import sublime_plugin
import re
import os

class OpenJournalReferencedOnThisLineCommand(sublime_plugin.TextCommand):
  def run(self, edit):
    region = self.view.sel()[0]
    line_range = self.view.line(region)
    line = self.view.substr(line_range)
    match = re.findall(r"\d{4}-\d{2}-\d{2}", line)

    # sublime.Window.open_file("/Users/cgenco/brain/journal/2020/10/2020-10-09.md")

    if len(match) > 0:
      date = match[0]
      res = os.system("/Users/cgenco/utils/,journal " + date)