Python | sympy.factor_list() method

With the help of sympy.factor_list() method, we can get a list of factors of a mathematical expression in SymPy in the form of (factor, power) tuple.

Syntax: factor_list(expression)

Parameters:
expression – It is a mathematical expression.

Returns: Returns a list of factors of the given mathematical expression in the form of (factor, power) tuple.

Example #1:
In this example we can see that by using sympy.factor_list() method, we can get a list of factors of a given mathematical expression.

# import sympy
from sympy import * x = symbols('x')
expr = x**2 * z + 4 * x*y * z + 4 * y**2 * z

print("Mathematical expression : {}".format(expr))

# Use sympy.factor_list() method
f = factor_list(expr)

print("List of factors : {}".format(f))

Output:

Mathematical expression : x**2*z + 4*x*y*z + 4*y**2*z
List of factors : (1, [(z, 1), (x + 2*y, 2)])

Example #2:

# import sympy
from sympy import * x = symbols('x')
expr = (x**2 - 2 * x + 1)

print("Mathematical expression : {}".format(expr))

# Use sympy.factor_list() method
f = factor_list(expr)

print("List of factors : {}".format(f))

Output:

Mathematical expression : x**2 - 2*x + 1
List of factors : (1, [(x - 1, 2)])