decimal.Decimal.number_class()

number_class(context=None)

Return a string describing the class of the operand. The returned value is one of the following ten strings.

• "-Infinity", indicating that the operand is negative infinity.
• "-Normal", indicating that the operand is a negative normal number.
• "-Subnormal", indicating that the operand is negative and subnormal.
• "-Zero", indicating that the operand is a negative zero.
• "+Zero", indicating that the operand is a positive zero.
• "+Subnormal", indicating that the operand is positive and subnormal.
• "+Normal", indicating that the operand is a positive normal number.
• "+Infinity", indicating that the operand is positive infinity.
• "NaN", indicating that the operand is a quiet NaN (Not a Number).
• "sNaN", indicating that the operand is a signaling NaN.