  # Python | sympy.as_coefficients_dict () method Using the `sympy.as_coefficients_dict() ` method, we can find the coefficients of all the elements in the dictionary that exist in mathematical expression using ` sympy.as_coefficients_dict () `.

Syntax: ` sympy.as_coefficients_dict () `
Return: Return the coefficients of mathematical expression in the dictionary.

Example # 1:
In this example, we see that using ` sympy.as_coefficients_dict ( ) ` we can find all the coefficients in the math expression and return its dictionary.

 ` # import sympy ` ` from ` ` sympy ` ` import ` ` * `    ` x ` ` = ` ` symbols (` `` x` ` `) `   ` # Use the sympy method. as_coefficients_dict () ` ` gfg ` ` = ` ` x ` ` * ` ` * ` ` 3 ` ` + ` ` 21 ` ` * ` ` x ` ` + ` ` 12 ` ` `  ` print ` ` (gfg.as_coefficients_dict ()) `

Output:

defaultdict (, {1: 12, x ** 3: 1, x: 21 })

Example # 2:

 ` # import sympy ` ` from ` ` sympy ` ` import ` ` * `  ` `  ` x ` ` = ` ` symbols (` ` `x` ` `) `   ` # Use the sympy.as_coefficients_dict () method ` ` gfg ` ` = ` ` x ` ` * ` ` * ` ` 3 ` ` + ` ` 21 ` ` * ` ` x ` ` * ` ` * ` ` 2 ` + ` 121 ` ` * ` ` x ` ` + ` ` 4 `   ` print ` ` (gfg.as_coefficients_dict ()) `

Output:

defaultdict (, {1: 4, x ** 3 : 1, x ** 2: 21, x: 121})