同情转换功能？ :2*a*b + 2*a*c + 2*b*c --> 2*(a*b + b*c + c*a) : 我想要字符串 ok

Question

sympy转换函数？

2*a*b + 2*a*c + 2*b*c --> 2*(a*b + b*c + c*a) :

我想要字符串 ok

from sympy import *
var('a b c')
f=2*a*b+2*a*c+2*b*c
print("#f  ",f)
print("#f/2",f/2)
#f   2*a*b + 2*a*c + 2*b*c
#f/2 a*b + a*c + b*c

(2022-02-02)

我尝试因子

我试试函数

谢谢

from sympy import factor, factor_terms
from sympy.abc import a,b,c
def myFactor(h):
    print("# factor       :",h,"--->",factor(h))
    print("# factor_terms :",h,"--->",factor_terms(h))
    return
myFactor(2*a*b + 2*a*c + 2*b*c)
myFactor(a**2 - b**2)
print("# factor:thank you")
# factor       : 2*a*b + 2*a*c + 2*b*c ---> 2*(a*b + a*c + b*c)
# factor_terms : 2*a*b + 2*a*c + 2*b*c ---> 2*(a*b + a*c + b*c)
# factor       : a**2 - b**2 ---> (a - b)*(a + b)
# factor_terms : a**2 - b**2 ---> a**2 - b**2
# factor:thank you

Answer 1

>>> from sympy import factor, factor_terms
>>> from sympy.abc import a,b,c
>>> f = 2*a*b + 2*a*c + 2*b*c
>>> factor_terms(f)
2*(a*b + a*c + b*c)
>>> factor_terms(a**2 - b**2)
a**2 - b**2
>>> factor(_)
(a - b)*(a + b)