How to make my program accept FLOAT input???

Question

when User Enters radius length in decimals, program doesnt accept it!!!

#Programm for computing circle area!

from math import pi

r = input("Please Enter a circle's radius: ")
if r.isdigit():
s = round((pi *(float(r)**2)),2)
print ("The area of the circle with radius " + str(r) + " is: " + str(s))
else:
print ("Please Enter the length of the radius (Use digits only)")

Answer 1

isdigit() checks if the string contains only digits, which means that decimal points are rejected.

Just handle possible exceptions via try blocks instead.

try:
r = float(input())
# the rest of your code here
except ValueError:
# handle bad input here

Answer 2

Hatsy Rei Do we think alike or you stole my answer a day before I thought of it?

Anton Kuznetsov Hatsy's is the answer.