Python | Pandas DatetimeIndex.to_perioddelta()

Python is a great language for doing data analysis, primarily because of the fantastic ecosystem of data-centric python packages. Pandas is one of those packages and makes importing and analyzing data much easier. Pandas DatetimeIndex.to_perioddelta() function calculate TimedeltaIndex of difference between index values and index converted to periodIndex at specified frequency. It is used for vectorized offsets.

Syntax: DatetimeIndex.to_perioddelta(freq) Parameters : freq : One of pandas’ offset strings or an Offset object. Will be inferred by default Return : TimedeltaIndex

Example #1: Use DatetimeIndex.to_perioddelta() function to calculate the TimedeltaIndex of difference between index values and index converted to periodIndex at specified frequency Python3

# importing pandas as pd
import pandas as pd

# Create the DatetimeIndex
# Here 'S' represents secondly frequency 
didx = pd.DatetimeIndex(start ='2018-11-15 09:45:10', freq ='S', periods = 5)

# Print the DatetimeIndex
print(didx)

Output : Now we want to calculate the TimedeltaIndex of difference between index values and index converted to periodIndex Python3

# calculate the TimedeltaIndex 
# 'T' represents minute based frequency
didx.to_perioddelta('T')

Output : As we can see in the output, the returned the difference between the index values and index converted to periodIndex.   Example #2: Use DatetimeIndex.to_perioddelta() function to calculate the TimedeltaIndex of difference between index values and index converted to periodIndex at specified frequency. Python3

# importing pandas as pd
import pandas as pd

# Create the DatetimeIndex
# Here 'T' represents minutely frequency 
didx = pd.DatetimeIndex(start ='2015-03-02 01:15:12', freq ='T', periods = 5)

# Print the DatetimeIndex
print(didx)

Output : Now we want to calculate the TimedeltaIndex of difference between index values and index converted to periodIndex Python3

# calculate the TimedeltaIndex 
# 'H' represents hourly frequency
didx.to_period('H')

Output : As we can see in the output, the returned the difference between the index values and index converted to periodIndex.