numpoly.array_str¶

numpoly.array_str(a: numpoly.typing.PolyLike, max_line_width: Optional[int] = None, precision: Optional[float] = None, suppress_small: Optional[bool] = None) → str [source]¶

Return a string representation of the data in an array.

The data in the array is returned as a single string. This function is similar to array_repr, the difference being that array_repr also returns information on the kind of array and its data type.

Args:

a:: Input array.
max_line_width:: Inserts newlines if text is longer than max_line_width. Defaults to numpy.get_printoptions()['linewidth'].
precision:: Floating point precision. Defaults to numpy.get_printoptions()['precision'].
suppress_small:: Represent numbers “very close” to zero as zero; default is False. Very close is defined by precision: if the precision is 8, e.g., numbers smaller (in absolute value) than 5e-9 are represented as zero. Defaults to numpy.get_printoptions()['suppress'].

Return:

The string representation of an array.

Example:

>>> q0 = numpoly.variable()
>>> numpoly.array_str(numpoly.polynomial([1, q0]))
'[1 q0]'
>>> numpoly.array_str(numpoly.polynomial([]))
'[]'
>>> numpoly.array_str(
...     numpoly.polynomial([1e-6, 4e-7*q0, 2*q0, 3]),
...     precision=4,
...     suppress_small=True,
... )
'[0.0 0.0 2.0*q0 3.0]'