Parse composer outdated into a markdown table

composer.py

import json,sys;

a = json.load(sys.stdin);
packages = a['installed'];
num_packages = len(packages);
are_available_updates = bool(num_packages);

if are_available_updates:
    print("There are "+str(num_packages)+" package updates available");
    print("\n");
    print("|Name|Version|Latest|");
    print("|---|---|---|");
    for x in packages:
        print("|"+x['name']+"|"+x['version']+"|"+x['latest']+"|");