Python Pandas Tutorial | Groupby based on Timestamp - P2

Python Pandas Tutorial | Groupby based on Timestamp - P2
Topic to be covered:
Groupby based on Timestamp

Code:
import pandas as pd
import numpy as np

#suppose the date range start from 1st Jan, 2017 and there are 200000 entires
# with the frequency of every 1 second

# Create the dataframe
df = pd.DataFrame(index=ts_index)

# We add a column 'No_of_Vehicles' and generate a random number between 1 to 10

# Groupby on a weekly basis

# Groupby based on bi-weekly basis

# Groupby on a monthly basis

[renubhandari]

Hi,

can you please explain line 13?

Thanks