Selecting a sample based on index

[Scott]

Hi everyone,

I am trying to select a time period based on a date index. head of data below:

Output:
	NZ
Year-Qtr	
Mar-90	0.2
Jun-90	-0.5
Sep-90	-0.3
Dec-90	0.0
Mar-91	0.2

I am trying the following code to try select up until 'Mar-18'.

model_data = gdp_data.loc[:'Mar-18']

It is not working though, does anyone know how to select a date range when the date is the index?

I appreciate any help
Thanks

[Serferi]

try this

os.path.getctime('data.txt')

it return a float so you can make an > or <.