num = 123.4567
formatted_num = '{0:.2f}'.format(num) # to 2 decimal places
# formatted_num = '123.46'
print(format(432.456, ".2f"))
>> 432.45
print(format(321,".2f"))
>> 321.00
print ("{0:.2f}".format(a))
>>> 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(round(a, 2))
print "%.2f" % 5