Lab 5 - The minimum value in array

def min_array():
   A = [23,22,53,24,45,26,72,81,89,55]
   i = 0
   minnum = A[0]
 
   while(i<len(A)):
        if(minnum > A[i]):
           minnum = A[i]
        i = i+1
   print(minnum)
   
         
min_array()