Python | Pandas DatetimeIndex.day_name()

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.day_name() function return the day names of the DateTimeIndex with specified locale. The default locale is None in which case the names are returned in English language.

Syntax: DatetimeIndex.day_name(locale=None)

Parameters :
locale : locale determining the language in which to return the day name

Return : Index of day names

Example #1: Use DatetimeIndex.day_name() function to return the names of the day for each entry in the DatetimeIndex object. Return the names of the days in French locale

# importing pandas as pd
import pandas as pd

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

# Print the DatetimeIndex
print(didx)

Output :

Now we want to return the names of the days in French locale.

# return the names of the days in French
didx.day_name(locale ='French')

Output :

As we can see in the output, the function has returned an Index object containing the names of the days in French.

Let’s return the name of the days in English

# return the names of the days in English
didx.day_name(locale ='English')

Output :


Example #2: Use DatetimeIndex.day_name() function to return the names of the day for each entry in the DatetimeIndex object. Return the names of the day in German locale

# importing pandas as pd
import pandas as pd

# Create the DatetimeIndex
# Here 'M' represents monthly frequency
didx = pd.DatetimeIndex(start ='2015-03-02', freq ='M', periods = 5)

# Print the DatetimeIndex
print(didx)

Output :

Now we want to return the names of the days in German locale.

# return the names of the days in German
didx.day_name(locale ='German')

Output :

As we can see in the output, the function has returned an Index object containing the names of the day in German locale.