afcarl / inflation_calc

inflation_calc

inflation_calc provides a toolkit with economical computations based on data from data.okfn.org. This project builds heavily on the work of economics <https://pypi.python.org/pypi/economics>

Features

• CPI
• Inflation (based on CPI by default)
• predict (predicts future cpi's based on current cpi's using ARIMA)

Requirements

• statsmodels
• scipy
• pandas
• requests
• editdistance

CPI

>> from inflation_calc.cpi import CPI
>> import datetime
>>
>> # Create a new CPI instance
>> cpi = CPI()
>>
>> # Get CPI for Iceland in 2007
>> cpi.get(datetime.date(2007,1,1), 'Iceland')
CPI(date=datetime.date(2007, 1, 1), value=112.07753358)
>>
>> # We're going to work with Iceland so set default country
>> # (we're creating a new instance but the country variable can be set)
>> iceland = CPI(country='Iceland')
>>
>> # Get CPI in 2012 (not in the data)
>> iceland.get(datetime.date(2012,1,1))
...
KeyError: 'Date 2012-01-01 not found in data'
>>
>> # Get the closest CPI value sintead
>> iceland.closest(datetime.date(2012,1,1))
CPI(date=datetime.date(2011, 1, 1), value=155.03663004)

Inflation

>> from inflation_calc.inflation import Inflation
>> import datetime
>>
>> # Create a new Inflation instance
>> inflation = Inflation()
>>
>> # How many US $ would I need in 2011 to pay for what cost $5 in 2007
>> inflation.inflate(5, datetime.date(2011,1,1), datetime.date(2007,1,1), 'United States')
5.424340332378624
>>
>> # We can also set the reference year and the country
>> usa_2007 = Inflation(reference=datetime.date(2007,1,1), country='United States')
>>
>> # Get the inflation for 2007 in the United States
>> usa_2007.get(datetime.date(2011,1,1))
Inflation(factor=1.0848680664757249, value=0.08486806647572484)

License

inflation_calc is available under the GNU General Public License, version 3. See LICENCE for more details.