Unexpanded coefficients of a polynomial

[Paul Royik]

Hello.

How can I get all unexpanded coeffs of a polynomial?

For example, Poly(360*x*y**71*(y**72 - 1)**4 + 360*x**4*(x**5 - 1)**71, x).all_coeffs() should return [360*y**71*(y**72 - 1)**4, 360*x**4*(x**5 - 1)**71], but, instead, it returns expanded long expression.

How to avoid this and return untouched coeffs?

Thank you. 

[Aaron Meurer]

Poly is designed to expand all polynomials out. If you just want the
terms of an expression as you've written it you can use
Add.make_args(). I wouldn't really call these the "coefficients" of
the expression though.

Aaron Meurer

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[Chris Smith]

The things you call "coefficients" are called "terms" of the sum. If you know you have a sum then `eq.args` will give you the terms. If the equation might have a single term then `Add.make_args(eq)` will give you 1 or more terms.

/c

[emanuel.c...@gmail.com]

BTW :

>>> x, y = symbols("x, y") >>> P = 360*x*y**71*(y**72 - 1)**4 + 360*x**4*(x**5 - 1)**7 >>> P.args (360*x**4*(x**5 - 1)**7, 360*x*y**71*(y**72 - 1)**4) >>> P.func.make_args(P) (360*x**4*(x**5 - 1)**7, 360*x*y**71*(y**72 - 1)**4) >>> P.func.make_args(P)==P.args True

HTH,

​

[Paul Royik]

Thanks to all!