# Python - How To Calculate Derivative in Python

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This tutorial will introduce the methods to calculate the derivate of a function in Python.

## Derivative With the SymPy Library in Python

The is known as the `Python Symbolic library`. It can be used to perform complex mathematical operations like derivatives on functions in Python. The `diff()` function inside the SymPy library can be used to calculate the derivative of a function. We can specify the variable with which we want to calculate the derivative with the `Symbol()` function in Python. See the following code example.

``from sympy import * import numpy as np  x = Symbol('x') y = x**2 + 1  yprime = y.diff(x) print(yprime) ``

Output:

``2*x ``

In the above code, we calculated the derivative of the function `x^2 + 1` with the `diff()` function of the SymPy library in Python. We specified the symbol to be `x` with the `Symbol()` function and calculated the derivative with respect to the symbol `x`.