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Avoid calling the input transformer twice in the execution stack....
Avoid calling the input transformer twice in the execution stack. This should allow to register input transformers that have side effects, at least in Notebooks. Right now there are sill multiple calls which may happen in the terminal on execution requests.

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test_sysinfo.py
17 lines | 390 B | text/x-python | PythonLexer
# coding: utf-8
"""Test suite for our sysinfo utilities."""
# Copyright (c) IPython Development Team.
# Distributed under the terms of the Modified BSD License.
import json
import nose.tools as nt
from IPython.utils import sysinfo
def test_json_getsysinfo():
"""
test that it is easily jsonable and don't return bytes somewhere.
"""
json.dumps(sysinfo.get_sys_info())