Python | Pandas DatetimeIndex.week

Pandas is a powerful library for data manipulation and analysis. Pandas DatetimeIndex is a data structure that provides many functionalities related to date and time data. Pandas DatetimeIndex.week is one such functionality that can be used to extract week numbers from the datetime data.

Syntax

DatetimeIndex.week

Parameters

No parameters are required to use the Pandas DatetimeIndex.week functionality.

Return Value

The Pandas DatetimeIndex.week functionality returns an integer value representing the week number for the datetime data.

Example

import pandas as pd

# Create a datetime column
data = {'date': ['2021-01-01', '2021-01-08', '2021-01-15', '2021-01-22', '2021-01-29']}
df = pd.DataFrame(data)
df['date'] = pd.to_datetime(df['date'])

# Extract week numbers
df['week'] = df['date'].dt.week

print(df)

Output

        date  week
0 2021-01-01    53
1 2021-01-08     1
2 2021-01-15     2
3 2021-01-22     3
4 2021-01-29     4

In this example, we have created a dataframe with a date column, converted it to pandas datetime format, and extracted the week numbers using the Pandas DatetimeIndex.week functionality.

Conclusion

Pandas DatetimeIndex.week is a simple yet powerful functionality that can be used to extract week numbers from datetime data. It can be used to analyze data on a weekly basis or to perform calculations based on the week number.