Server : Apache/2.4.41 (Ubuntu) System : Linux absol.cf 5.4.0-198-generic #218-Ubuntu SMP Fri Sep 27 20:18:53 UTC 2024 x86_64 User : www-data ( 33) PHP Version : 7.4.33 Disable Function : pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wifcontinued,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_get_handler,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,pcntl_async_signals,pcntl_unshare, Directory :  /usr/local/lib/python3.6/dist-packages/sympy/assumptions/tests/

Upload File : current_dir [ Writeable ] document_root [ Writeable ]

from sympy.assumptions import ask, Q
from sympy.assumptions.assume import assuming, global_assumptions
from sympy.abc import x, y

def test_assuming():
    with assuming(Q.integer(x)):
        assert ask(Q.integer(x))
    assert not ask(Q.integer(x))

def test_assuming_nested():
    assert not ask(Q.integer(x))
    assert not ask(Q.integer(y))
    with assuming(Q.integer(x)):
        assert ask(Q.integer(x))
        assert not ask(Q.integer(y))
        with assuming(Q.integer(y)):
            assert ask(Q.integer(x))
            assert ask(Q.integer(y))
        assert ask(Q.integer(x))
        assert not ask(Q.integer(y))
    assert not ask(Q.integer(x))
    assert not ask(Q.integer(y))

def test_finally():
    try:
        with assuming(Q.integer(x)):
            1/0
    except ZeroDivisionError:
        pass
    assert not ask(Q.integer(x))

def test_remove_safe():
    global_assumptions.add(Q.integer(x))
    with assuming():
        assert ask(Q.integer(x))
        global_assumptions.remove(Q.integer(x))
        assert not ask(Q.integer(x))
    assert ask(Q.integer(x))
    global_assumptions.clear() # for the benefit of other tests