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Get month name from number

python
datetime
date-objects
locale
Alex KataevbyAlex Kataev·Dec 19, 2024
TLDR

Here's the quickest way to convert a month number (1-12) into the corresponding month name using the calendar.month_name in Python:

import calendar print(calendar.month_name[3]) # Outputs "March"

Ensure the number falls within the 1 to 12 range.

Want a short version of the month name? Use calendar.month_abbr instead:

print(calendar.month_abbr[3]) # Outputs "Mar"

Using datetime to get month name

The datetime module gives additional versatility in dealing with date objects. Here's how you can use strftime(), where %B stands for full month name and %b for the abbreviated version:

from datetime import datetime month_number = 3 date_object = datetime(2023, month_number, 1) # A date in the year 2023 print(date_object.strftime('%B')) # Outputs "March"

Handling unexpected input

To "bugproof" your code, always anticipate and handle situations where the month number might fall out of range or be non-numeric. Here's a nifty function doing just that:

def get_month_name(month_number): try: return calendar.month_name[month_number] except (IndexError, TypeError): return "Invalid month number. Try again, brave adventurer!"

Reusable function for month name extraction

By encapsulating the earlier logic in a function, we get reusable and streamlined code that prevents invalid month numbers:

def safe_month_name(month_number): if 1 <= month_number <= 12: return calendar.month_name[month_number] else: return "Invalid month number. Space only has 12 known dimensions!" print(safe_month_name(3)) # "March" print(safe_month_name(0)) # "Invalid"

Displaying all month names

Use a simple for loop to iterate over calendar.month_name and dynamically display all month names. This comes in handy when populating dropdowns or setting up calendars:

for i in range(1, 13): print(calendar.month_name[i]) # One line, infinite calendar power!

Practical applications

These methods serve a myriad of applications. They can help you format timestamps in web applications, convert dates to friendly month names, generate reports, and generally save the day!

Convert date string to month name

Occasionally, your application may receive a date string. To extract the month name, parse the string into a datetime object first:

date_str = "2023-03-15" date_object = datetime.strptime(date_str, '%Y-%m-%d') # Here's that sexy date you ordered! print(date_object.strftime('%B')) # Outputs "March"

Locale-aware month formatting

In a global village like ours, applications need to handle internationalization and format month names in various languages. The locale library comes to your rescue:

import locale locale.setlocale(locale.LC_TIME, 'es_ES') # Switch gear to Spanish, por favor! print(date_object.strftime('%B')) # Outputs "marzo"

Don't forget to install necessary locales on your system.