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Python | Pandas tseries.offsets.CustomBusinessDay.rollback

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DateOffsets can be created to move dates by a specified number of valid dates. For example, Bday (2) can be added to a date to move it two business days forward. If the date does not start with a valid date, it is first moved to a valid date and then an offset is generated.

tseries.offsets.CustomBusinessDay.rollback() Pandas tseries.offsets.CustomBusinessDay.rollback() provided date back to next offset, unless by offset.

Syntax: pandas.tseries.offsets.CustomBusinessDay.rollback (dt)

Parameter:
dt: date

Returns: rollback if not on offset

Example # 1: Use pandas.tseries.offsets .CustomBusinessDay.rollback () to pandas.tseries.offsets.CustomBusinessDay.rollback () label if not offset.

# import pandas as pd

import pandas as pd

  
# Create a timestamp

ts = pd.Timestamp ( ’2019-4-23 11: 15: 00’ )

 
# Create offset

cbd = pd.tseries.offsets.CustomBusinessDay (weekmask = ’Mon Tue Wed’ )

  
# Print time stamp

print (ts)

  
# Print offset

print (cbd)

Output:

We will now add an offset to this timestamp object to increase the datetime value. We will also roll back the given timestamp if it is not offset.

# Adds an offset to the specified timestamp

new_timestamp = ts + cbd

 
# Print updated timestamp

print (new_timestamp)

 
# rollback if timestamp is set
# not offset

result = cbd.rollback (pd.Timestamp ( ’2019-4-21 11: 15: 00’ ))

 
# print result

print (result)

Output:

As we can see in the output, we have successfully created an offset and added it to the given label time. We also rolled back this timestamp as it is not offset.

Example # 2: Use pandas.tseries.offsets.CustomBusinessDay.rollback () to pandas.tseries.offsets.CustomBusinessDay.rollback () label if not offset.

# import pandas as pd

import pandas as pd

 
# Create a timestamp

ts = pd.Timestamp ( ’2019-4-23 11: 15: 00’ )

 
# Create offset

cbd = pd.tseries.offsets.CustomBusinessDay (n = 3 , weekmask = ’Mon Tue Wed Thu’ )

 
# Print time stamp

print (ts)

 
# Print offset

print (cbd)

Output:

We will now add an offset to the given timestamp object to increment the datetime value. We will also roll back the given timestamp if it is not offset.

# Adds an offset to the specified timestamp

new_timestamp = ts + cbd

 
# Print updated timestamp

print (new_timestamp)

 
# rollback if timestamp is set
# not offset

result = cbd.rollback (pd.Timestamp ( ’2019-4-21 11: 15: 00’ ))

 
# print result

print (result)

Output:

As we can see in the output, we have successfully created an offset and added it to the given timestamp. We have also rolled back this timestamp since it is not offset.