assert does not work. what can I do for it?

Question

This is my terminal shot.
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star21teks:/ $ /data/user/0/org.qpython.qpy/files/bin/qpython3-android5.sh && exit
Python 3.6.4 (qpyc:3.6.4, Mar 12 2018, 13:00:23)
[GCC 4.2.1 Compatible Android Clang 5.0.300080 ] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> assert 1 - 1 == 2
>>>
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Answer 1

This is expected output.

assert() returns nothing when the statement inside is true. Else it throws an AssertionError and stops the program

Answer 2

Using Pydroid, I can get the expected output. this is the terminal shot. the version of Python and GCC are different from those of Qpython. And the diference of version may impact on the result. Here is the Pydroid's Interpreter shot.
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Python 3.6.2 (default, Apr 25 2018, 09:37:02)
[GCC 7.2.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> assert 1 - 1 == 2
Traceback (most recent call last):
File "<stdin>, line 1, in <module>
AssertionError
>>>