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Given the following text description, write Python code to implement the functionality described.
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Description:
Minimum numbers needed to express every integer below N as a sum
function to count length of binary expression of n ; Driver code

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Python Code:
def countBits(n ) : 
	 count = 0 ; 
 while(n ) : 
	 count += 1 ; 
 n >>= 1 ; 
  return count ; 
  n = 32 ; 
 print("Minimum ▁ value ▁ of ▁ K ▁ is ▁ = ", countBits(n ) ) ; 

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