Date Ranges
Generate sequences of dates with pd.date_range() or a simple loop. Check if a date falls within an interval.
Python
Beginner
3 min read
Date Intervals and Ranges
Example
from datetime import date, timedelta
import pandas as pd
# Generator
def date_range(start, end):
current = start
while current <= end:
yield current
current += timedelta(1)
for d in date_range(date(2024, 6, 1), date(2024, 6, 7)):
print(d)
# Interval check
def in_range(dt, start, end):
return start <= dt <= end
# Pandas
dates = pd.date_range("2024-Q1", periods=90, freq="D") Pro Tip
Always use <= inclusive comparisons for intervals — exclusive end dates cause off-by-one bugs.