numpoly.set_options

numpoly.set_options(**kwargs: Any) → None

Set global numpoly options.

Args:

default_varname:

Polynomial indeterminant defaults, if not defined explicitly.

display_graded:

When displaying polynomials as strings, sort polynomial sums in graded order.

display_reverse:

When displaying polynomials as strings, sort polynomial sums in reversed lexicographical order.

display_inverse:

If true, display polynomials from smallest to largest exponent.

display_exponent:

Exponent sign; Separate indeterminants and its power.

display_multiply:

Multiplication sign; Separates coefficients and indeterminants, and indeterminants from each other.

force_number_suffix:

Add a postfix index to single indeterminant name. If single indeterminant name, e.g. ‘q’ is provided, but the polynomial is multivariate, an extra postfix index is added to differentiate the names: ‘q0, q1, q2, …’. If true, enforce this behavior for single variables as well such that ‘q’ always get converted to ‘q0’.

retain_coefficients:

After each operation a cleanup is done to reduce the polynomial to its smallest memory imprint. If true, do not remove redundant coefficients (consisting of only zeros).

retain_names:

After each operation a cleanup is done to reduce the polynomial to its smallest memory imprint. If true, do not remove redundant names (not represented in polynomial anymore).

sort_graded:

Graded sorting, meaning the indices are always sorted by the index sum. E.g. x**2*y**2*z**2 has an exponent sum of 6, and will therefore be consider larger than both x**3*y*z, x*y**2*z and ``x*y*z**2, which all have exponent sum of 5.

sort_reverse:

Reverse lexicographical sorting meaning that x*y**3 is considered bigger than x**3*y, instead of the opposite.

varname_filter:

Regular expression defining valid indeterminant names.

Example:

>>> numpoly.monomial([3, 3])
polynomial([1, q0, q0**2, q1, q0*q1, q1**2])
>>> numpoly.set_options(default_varname="z", varname_filter=".+")
>>> numpoly.monomial([3, 3])
polynomial([1, z0, z0**2, z1, z0*z1, z1**2])

Note:

get_options, global_options