How to convert decimal string in python to a number? [duplicate]

Answer 1

Just use float()

>>> float('1.03')
1.03

If you need an actual Decimal type, use the decimal module:

>>> from decimal import *
>>> Decimal('1.03')
Decimal('1.03')

In general, using floats will be easier for you, but you pay for that with the inexact precision that comes with floats.