如何在Sympy中查找表达式中的所有术语 [英] How to find all terms in an expression in Sympy
问题描述
我有一个表达式:1/(x+1)+4*x/(x-1)+3-4*x**2+10*x**2
我需要的是一个包含这个表达式中的术语的列表.
即 [1/(x+1), 4*x/(x-1), 3, -4*x**2 , 10*x**2]
更新:它不应该收集类似的术语.因此,在收集类似术语后,该列表应分别具有 -4*x** 2 和 10*x** 2 而不是 6*x**2.
根据问题和评论,如果您可以将表达式作为字符串获取,那么如果您想避免术语收集,您可以这样做.
>
(sympify("1/(x+1)+4*x/(x-1)+3-4*x**2+10*x**2",evaluate=False)).args
这将返回所有条款而不收集类似条款.
I have an expression as: 1/(x+1)+4*x/(x-1)+3-4*x**2+10*x**2
What I need is a list that contain the terms in this expression.
i.e. [1/(x+1), 4*x/(x-1), 3, -4*x**2 , 10*x**2]
update: It should not collect like terms. Therefore the list should have -4*x** 2 and 10*x** 2 separately and not 6*x**2 after collecting like terms.
Based on the question and comments, if you can get the expression as a string, you can do something like this if you want to avoid term collection.
(sympify("1/(x+1)+4*x/(x-1)+3-4*x**2+10*x**2", evaluate=False)).args
this will return all the terms without collecting like terms.
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