Python | sympy.rewrite() method

Python | sympy.replace() method

Last Updated : 26 Jul, 2019

With the help of sympy.replace() method, we can replace the functions in the mathematical expression without editing the whole expression by using sympy.replace() method.

Syntax : sympy.replace()
Return : Return the replaced values in the mathematical expression.

Example #1 :
In this example we can see that by using sympy.replace() method, we are able to replace the mathematical functions in the expression and return the updated expression.

# import sympy 
from sympy import * 
  
x, y = symbols('x y') 
  
f = sin(x) + cos(2 * x) 
  
# Use sympy.replace() method 
gfg = f.replace(cos, sin) 
     
print(gfg) 

Output :

sin(x) + sin(2*x)

Example #2 :

# import sympy 
from sympy import * 
  
x, y = symbols('x y') 
  
f = log(sin(x)) + tan(cos(2 * x)) 
# Use sympy.replace() method 
gfg = f.replace(log, tan) 
     
print(gfg) 

Output :

tan(sin(x)) + tan(cos(2*x))

Python | sympy.rewrite() method

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Article Tags :

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SymPy

Practice Tags :

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