this is the code i got for making a diamond. However, the diamond is not even. How can I make it even?

 

for i in range (1,10):
   print (" "*(10-i),"*"*(2*i-1))

for i in range(10):
   
   for j in range(0, i):
       print(" ", end="")
   for k in range(2 * (10 - i) - 1):
       print("*", end="")
   print()