Call kaleidoscope from python. Useful for diffing/comparing two dictionaries. I do this sometimes in nosetests.

ksdiff.py

def ksdiff(a, b):
    import subprocess
    import os
    if not os.path.exists('/usr/local/bin/ksdiff'):
        raise Exception('where is ur ksdiff m8')
    else:
        a_path = '/tmp/ksdiff_a.txt'
        b_path = '/tmp/ksdiff_b.txt'
        with open(a_path, 'w') as fh:
            fh.write(str(a))
        with open(b_path, 'w') as fh:
            fh.write(str(b))
        command = '/usr/local/bin/ksdiff --diff {} {}'.format(a_path, b_path)
        return subprocess.call(command, shell=True)

def ksdiffjson(a, b):
    a = json.dumps(a, indent=4, sort_keys=True)
    b = json.dumps(b, indent=4, sort_keys=True)
    return ksdiff(a, b)