Write a Python Program to calculate the natural logarithm of any number.

Natural logarithm

The natural logarithm, often denoted as ln, is is a mathematical function that represents the ogarithm to the base e,where is the mathematical constant approximately equal to 2.71828.In other words, for a positive number x, the natural logarithm of x is the exponent y that satisfies the equation e^y=x.
Mathematically, the natural logarithm is expressed as:
ln(𝑥)
It is commonly used in various branches of mathematics, especially in calculus and mathematical analysis, as well as in fields such as physics, economics, and engineering. The natural logarithm has properties that make it particularly useful in situations involving exponential growth or decay.

Program

import math
def myfun():
    num=float(input("Enter a number: "))
    if(num<0):
        print("Please enter a positive number.")
    else:
        result=math.log(num)
        print(f"The natural logarithm of{num} is :{result}")
    
if __name__=="__main__":
    myfun()

Enter a number: 1.4
The natural logarithm of1.4 is :0.3364722366212129

Write a Python Program to calculate the natural logarithm of any number.