num = 123.4567
formatted_num = '{0:.2f}'.format(num) # to 2 decimal places
# formatted_num = '123.46'
num = 123.4567
print(round(num, 2))
#2 is the number of decimal digits (after the .)
>>> foobar = 3.141592
>>> print(f'My number is {foobar:.2f} - look at the nice rounding!')
My number is 3.14 - look at the nice rounding!
print "%.2f" % 5