10 examples of 'check float value' in Python

637
def is_float(value):
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    """
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    test if value is float
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    """
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    try:
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        float(value)
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        return True
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    except (ValueError, TypeError):
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        return False

38
def _check_float(o):
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    if not isinstance(o, float):
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        raise TypeError("'{}' is not a 'float' object".format(o.__class__.__name__))

72
def testFloat(val):
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    """
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    Test value for float.
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    Used to detect use of variables, strings and none types, which cannot be checked.
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    """
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    try:
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        return type(float(val)) == float
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    except Exception:
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        return False

4
def check_positive(value):
5
    try:
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        fvalue = float(value)
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    except ValueError:
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        return False
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    else:
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        if fvalue <= 0:
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            return False
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        return fvalue

48
def range_check(value):
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    """ Checks that *value* can be converted to a value in the range 0.0 to 1.0.
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        If so, it returns the floating point value; otherwise, it raises a
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        TraitError.
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    """
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    value = float(value)
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    if 0.0 <= value <= 1.0:
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        return value
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    raise TraitError

87
def check_negative(value):
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    e = argparse.ArgumentTypeError('{} is an invalid non-negative float value'.format(value))
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    try:
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        fvalue = float(value)
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    except ValueError:
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        raise e
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    if fvalue < 0:
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        raise e
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    return fvalue

8
def isfloat(val):
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    """
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    check if the entry can become a float (float or string of float)
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    Parameters
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    ----------
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    val
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        an entry of any type
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    Returns
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    -------
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    bool
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        True if the input can become a float, False otherwise
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    """
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    try:
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        float(val)
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        return True
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    except ValueError:
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        return False

217
def test_float():
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    Money = MoneyMaker()
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    money = Money(Decimal('sNaN'))
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    with pytest.raises(ValueError):
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        float(money)
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    money = Money(Decimal('NaN'))
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    assert math.isnan(float(money)) is True
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    money = Money(Decimal('-NaN'))
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    assert math.isnan(float(money)) is True
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    money = Money(Decimal('1.0'))
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    assert float(money) == 1.0

110
def test_float_number():
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    """Tests to ensure the float type correctly allows floating point values"""
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    assert hug.types.float_number("1.1") == 1.1
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    assert hug.types.float_number("1") == float(1)
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    assert hug.types.float_number(1.1) == 1.1
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    with pytest.raises(ValueError):
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        hug.types.float_number("bacon")

152
def is_float(var):
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    try:
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        float(var)
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        return True
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    except ValueError:
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        return False