import subprocess
import sys

cases = [
    '    open(filepath)',   # FAIL (IndentationError)
    '4   2,',               # (seems ok)
    'π   2',                # FAIL
    'π   2,',               # FAIL
    '4\t2',                 # FAIL
]

for case in cases:
    print('=' * 40)
    p = subprocess.Popen(sys.executable, stdin=subprocess.PIPE)
    p.communicate(("""import traceback

try:
    exec(%r)
except Exception as exc:
    traceback.print_exc()
    raise
""" % case).encode('utf-8'))