Haircut

This Python script calculates basic statistics pulled from my haircut page.

Based on the original Gist created by Kyle Fox.

Sample Output

Number of haircuts recorded: 140 (Since October 10, 1998)
Shortest time between haircuts: 9 days (July 21, 2016 to July 30, 2016)
Longest time between haircuts: 138 days (November 28, 2022 to April 15, 2023)
Median time between haircuts: 69.0 days
Average time between haircuts: 68.8 days
Average time between last six haircuts: 50.8 days
Your last haircut was 2 days ago. (December 17, 2024)
You probably should get another haircut in about 48 days. (February 05, 2025)

Requirements

• Python 3
• Beautiful Soup 4

Change Log

20241218

• Ported script to Python 3
• Replaced urllib2 library with urllib.request library
• Removed exception handling for malformed dates
• Median and average times are now formatted with a single decimal place
• Moved the script for Python 2 to the /legacy/ directory

20241111

• Added calculation of the average time between the previous six haircuts
• The next haircut date is now based on the previous six haircut average
• Changed terminology from “period” to “time” in the output

20230121

• Added fix for failed certificate verification related to the urllib2.py library

20220617

• Updated to Beautiful Soup 4
• Added html.parser argument to BeautifulSoup() constructor

20211130

• Added “User-agent” header to fix urllib2.HTTPError: HTTP Error 406: Not Acceptable
• Standardized variable naming and value quoting because consistency

20201010

• Added calculation of the median time between haircuts

20200922

• Modified output for even more consistent display of days and dates
• Added newlines before and after output because readability

20200714

• Modified output for haircuts occurring one day ago

20200526

• Modified output for consistent display of days and dates
• Added more descriptive “next haircut” strings
• Added logic to display “day zero” status
• Updated URLs to use https

20180327

• Added note regarding Beautiful Soup requirement

20131109

• Set UTF-8 encoding

20131023

• Educated the apostrophes
• Minor edits and formatting tweaks

20121114

• Initial release as a Gist by Kyle Fox