Decimal
- Decimal(value='0', context=None)
Construct a new Decimal object.
value can be an integer, string, tuple, or another Decimal object. If
no value is given, return Decimal('0'). The context does not affect
the conversion and is only passed to determine if the InvalidOperation
trap is active.© Python Software Foundation. PSF License Version 2 · Official docs ↗
Changed in 3.2, 3.3, 3.6
- 3.2: The argument to the constructor is now permitted to be a float instance.
- 3.2: Mixed-type comparisons between Decimal instances and other numeric types are now fully supported.
- 3.3: float arguments raise an exception if the FloatOperation trap is set. By default the trap is off.
- 3.6: Underscores are allowed for grouping, as with integral and floating-point literals in code.
Members of Decimal
a
- adjusted
- Return the adjusted exponent (exp + digits - 1) of the number.
- as_integer_ratio
- Return a pair of integers whose ratio is exactly equal to the original.
- as_tuple
- Return a tuple representation of the number.
c
- canonical
- Return the canonical encoding of the argument.
- compare
- Compare self to other.
- compare_signal
- Identical to compare, except that all NaNs signal.
- compare_total
- Compare two operands using their abstract representation.
- compare_total_mag
- As compare_total(), but ignores the sign of each operand.
- conjugate
- Return self.
- copy_abs
- Return the absolute value of the argument.
- copy_negate
- Return the negation of the argument.
- copy_sign
- Return a copy of *self* with the sign of *other*.
e
- exp
- Return the value of the (natural) exponential function e**x.
f
- fma
- Fused multiply-add.
- from_float
- Alternative constructor that only accepts instances of float or int.
- from_number
- Alternative constructor that only accepts instances of float, int or Decimal, but not strings or tuples.
i
- is_canonical
- Return True if the argument is canonical and False otherwise.
- is_finite
- Return True if the argument is a finite number, and False otherwise.
- is_infinite
- Return True if the argument is infinite, and False otherwise.
- is_nan
- Return True if the argument is a (quiet or signaling) NaN, else False.
- is_normal
- Return True if the argument is a normal number and False otherwise.
- is_qnan
- Return True if the argument is a quiet NaN, and False otherwise.
- is_signed
- Return True if the argument has a negative sign and False otherwise.
- is_snan
- Return True if the argument is a signaling NaN and False otherwise.
- is_subnormal
- Return True if the argument is subnormal, and False otherwise.
- is_zero
- Return True if the argument is a zero and False otherwise.
l
- ln
- Return the natural (base e) logarithm of the operand.
- log10
- Return the base ten logarithm of the operand.
- logb
- Return the adjusted exponent of the operand as a Decimal instance.
- logical_and
- Applies an 'and' operation between self and other's digits.
- logical_invert
- Invert all its digits.
- logical_or
- Applies an 'or' operation between self and other's digits.
- logical_xor
- Applies an 'xor' operation between self and other's digits.
m
n
- next_minus
- Returns the largest representable number smaller than itself.
- next_plus
- Returns the smallest representable number larger than itself.
- next_toward
- Returns the number closest to self, in the direction towards other.
- normalize
- Normalize the number by stripping trailing 0s
- number_class
- Return a string describing the class of the operand.
q
- quantize
- Quantize *self* so its exponent is the same as that of *exp*.
r
- radix
- Return Decimal(10).
- remainder_near
- Return the remainder from dividing self by other.
- rotate
- Returns a rotated copy of self's digits, value-of-other times.
s
- same_quantum
- Test whether self and other have the same exponent or both are NaN.
- scaleb
- Return the first operand with the exponent adjusted the second.
- shift
- Returns a shifted copy of self's digits, value-of-other times.
- sqrt
- Return the square root of the argument to full precision.
t
- to_eng_string
- Convert to an engineering-type string.
- to_integral
- Identical to the to_integral_value() method.
- to_integral_exact
- Round to the nearest integer.
- to_integral_value
- Round to the nearest integer without signaling Inexact or Rounded.
