def test_number3():
for i in ['a', int, []]:
assert_false(is_number(i))
def test_number3(n):
assert not is_number(n)
def test_number2():
for i in range(-10, 10):
assert_true(is_number(i/10))
def test_number2(n):
assert is_number(n / 10)
def test_number1(n):
assert is_number(n)
def test_number3(n):
assert not is_number(n)
def test_number2(n):
assert is_number(n/10)
def test_number1(n):
assert is_number(n)
