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A module providing some useful date functions

Project description

Seems like I constantly need some kind of date functions that aren’t found (or aren’t found easily enough anyway) in the standard library or in 3rd party packages that I use regularly. This library attempts to remedy that so I know where to add the functions when I build them and know where to look for them when I need them.

Getting Started

There are no dependancies to install. You just need to:

pip install datefns


git clone
cd datefns
python install

Once installed, you can iterate through the entire file without using much memory by doing the following:

import datefns, datetime
d1 =, 7, 10)
d2 =, 12, 31)
we = datefns.week_ending(d1, week_ends_on='Sun')
ds = datefns.date_table(d1, d2)
me = datefns.eomonth(d1, 5) #, 12, 31)

ts = datefns.time_table()

datefns.date_table_to_csv(ds, '/path/to/date-file.csv', overwrite=True)
datefns.time_table_to_csv(ts, '/path/to/time-file.csv', overwrite=True)

import sqlite3
conn = sqlite3.connect(':memory:')
datefns.load_date_table(conn, datefns.date_table(start_date=d1, end_date=d2))
datefns.load_time_table(conn, ts)

ds = datefns.date_range(d1, d2, datefns.by_month)

Running Tests

To run tests:

python -m tests.test_datefns


The project is licensed under the MIT License - see the file for details

Project details

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