In [1]: a = 5.026
In [2]: b = 5.000
In [3]: round(a,2)
Out[3]: 5.03
In [4]: round(b,2)
Out[4]: 5.0
In [5]: '%.2f' % a
Out[5]: '5.03'
In [6]: '%.2f' % b
Out[6]: '5.00'
In [7]: float('%.2f' % a)
Out[7]: 5.03
In [8]: float('%.2f' % b)
Out[8]: 5.0
In [9]: from decimal import Decimal
In [10]: Decimal('5.026').quantize(Decimal('0.00'))
Out[10]: Decimal('5.03')
In [11]: Decimal('5.000').quantize(Decimal('0.00'))
Out[11]: Decimal('5.00')