vastorbit.VastFrame.datecol¶

VastFrame.datecol() → list¶

Returns a list of the VastColumns of type date in the VastFrame.

Returns:: List of all VastColumns of type date.
Return type:: List

Examples

We import vastorbit:

import vastorbit as vo

Hint

By assigning an alias to vastorbit, we mitigate the risk of code collisions with other libraries. This precaution is necessary because vastorbit uses commonly known function names like “average” and “median”, which can potentially lead to naming conflicts. The use of an alias ensures that the functions from vastorbit are used as intended without interfering with functions from other libraries.

Let’s create a small dataset:

data = vo.VastFrame(
    {
        "empid": ['1', '2', '3', '4'],
        "dob": ['1993-01-01', '1988-01-01', '1992-01-01', '1989-01-01'],
        "doj": ['2022-01-01', '2023-01-01', '2022-01-01', '2023-01-01'],
        "emp_cat":[933, 945, 723, 799],
    }
)
data

	Abc empid Varchar(1)	Abc dob Varchar(10)	Abc doj Varchar(10)	123 emp_cat Integer
1	3	1992-01-01	2022-01-01	723
2	2	1988-01-01	2023-01-01	945
3	4	1989-01-01	2023-01-01	799
4	1	1993-01-01	2022-01-01	933

Rows: 1-4 | Columns: 4

Let’s set the data type of dob and doj to date.

data["dob"].astype("date")
data["doj"].astype("date")

Let’s retrieve the date type VastColumns in the dataset.

data.datecol()