a = 1 for x in range(5): a += 0.1 print(a)
This is the result:
1.1 1.2000000000000002 1.3000000000000003 1.4000000000000004 1.
You could format your output like this;
a=1 for x in range(5): a += 0.1 print("{:.9f}".format(a) )