How do I to round float result?

Question

I Will calculate 10 / 3, and result is 3.333333333
I want To round this result into 3 number, so The result should be 3.333
So, how I do it?

Answer 1

if you want to print this result, rounding float to certain decimal points, do this:
x == 10/3
print("{0:.3f}".format(x))
that would output your number limiting it to 3 signs after a dot

Answer 2

def round(num):
if (num + 0.5) % 2 == 0:
print (num + 0.5)

elif (num + 0.4) % 2 == 0:
print(num + 0.4)

elif (num + 0.3) % 2 == 0:
print (num + 0.3)

elif (num + 0.2) % 2 == 0:
print (num + 0.2)

elif (num + 0.1) % 2 == 0:
print (num + 0.1)
else:
print(int(num))

round(5.3)
round(5.5)

This works but is a little enefficient.

Output:
5
6

Answer 3

x = 10/3.0
round (x , 3)

# Or in one step
round (10/3.0 , 3)