TimeFrame

Introduction

This package makes the following calculations on datetime:

• Adding two time frames, resulting in one bigger time frame or two disjoint one.
• Multiplying two time frames, resuling in either an overlapped time frame or an empty one, depending on the two time frames.
• Substracting two time frames, resuling in one or several time frames.

Install

Installing the package is as simple as running the following command inside your terminal:

pip install timeframe

Examples

NOTE: You can always take a look at the test cases in the tests directory to get a sense of how to use the package, but consider the below examples first, because it's fairly easy to use.

You need to import datetime as well as TimeFrame:

from datetime import datetime
from timeframe import TimeFrame

Inclusion

This implies whether or not one time frame includes another; it can also be used to check if a datetime is inside one TimeFrame.

When you want to check if a datetime is inside a TimeFrame:

tf1 = TimeFrame(datetime(2021, 1, 26, 19), datetime(2021, 1, 26, 20))
tf1.includes(datetime(2021, 1, 26, 19, 30))
# output: True

When You want to check if an instance of TimeFrame is inside another one:

tf2 = TimeFrame(datetime(2021, 1, 26, 19, 30), datetime(2021, 1, 26, 19, 40))
tf1.includes(tf2)
# output: True

tf3 = TimeFrame(datetime(2021, 1, 26, 19, 45), datetime(2021, 1, 26, 21, 30))
tf1.includes(tf3)
# output: False

Duration

TimeFrame has a property named duration which can be used to retrieve the total amount of seconds that TimeFrame has:

tf1.duration
# output: 3600.0

tf2.duration
# output: 600.0

tf3.duration
# output: 6300.0

Comparison

You can always compare two TimeFrame to see if one is greater than the other or not. This comparison is based on the end of one TimeFrame and the start of the other.

tf1 > tf2
# output: False

tf3 > tf2
# output: True

You can also compare equality using either greater-equal sign, or a simple equal.

tf1 == tf2
# output: False

tf3 >= tf2
# output: True

Overlap

When you want to know how much two time frames have in common, use multiply sign:

tf1 * tf2
# output: 2021-01-26T19:30:00#2021-01-26T19:40:00

tf2 * tf3
# output: Empty TimeFrame

You can also check their duration as well:

(tf1 * tf2).duration
# output: 600.0

(tf2 * tf3).duration
# output: 0.0

Summation (union)

The summation sign is used to get the union of two time frames:

tf1 + tf2
# output: 2021-01-26T19:00:00#2021-01-26T20:00:00

(tf1 + tf2).duration
# output: 3600.0

tf1 + tf3
# output: 2021-01-26T19:00:00#2021-01-26T21:30:00

(tf1 + tf3).duration
# output: 9000.0

Minus

You can also substract one time frame from the other, which will ultimately result in either two disjoint time frames, or one unified time frame, depending on the time frames.

tf1 - tf2
# output:
# 2021-01-26T19:00:00#2021-01-26T19:29:59.999999
# 2021-01-26T19:40:00.000001#2021-01-26T20:00:00

(tf1 - tf2).duration
# output: 2999.999998

Substracting two disjoint time frames will return the first time frame as a result.

tf2 - tf3
# output: 2021-01-26T19:30:00#2021-01-26T19:40:00

(tf2 - tf3).duration
# output: 600.0

(tf2 - tf3) == tf2
# output: True

Shift

You can shift a timeframe by a given timedelta.

td1 = datetime.timedelta(minutes=30)
tf1.shift(td1)
# output: 2021-01-26T19:30:00#2021-01-26T20:30:00

With inplace=True the timeframe will be shifted inplace.

tf1.shift(td1, inplace=True)
# output: None

Acknowledgment

Thank you for showing interest in this package. Feel free to contact me if you feel like it. 🥂

Contribution

Any contribution of any size is greatly appreciated. Feel free to open a PR or issue in the github page at any time. 🤗