python

Python snippets

Pausable Timer

Use case:

import time

t = PausableTimer()
time.sleep(4.0)
print(t.elapsed())
t.pause()
time.sleep(3.0)
print(t.elapsed())
t.resume()
time.sleep(2.0)
print(t.elapsed())

Sunrise/Sunset Calculation

Use case:

from datetime import datetime
import dateutil.tz as tz

lon = 0.0
tzoffset = 0.0
tzone = tz.gettz('UTC')
dt = datetime(year=2021, month=6, day=1, hour=12, minute=00, second=00, tzinfo=tzone)
print("dt = " + str(dt))
for lat in range(-90, 91):
    try:
        sunrise, sunset = sunrise_sunset(lat, lon, dt, tzoffset)
        print("Sunrise is at " + sunrise.strftime("%m-%d-%Y %H:%M:%S"))
        print("Sunset is at  " + sunset.strftime("%m-%d-%Y %H:%M:%S"))
    except SunriseException:
        print("No sunrise at " + str(lat))
    except SunsetException:
        print("No sunset at " + str(lat))
dt = datetime(year=2021, month=12, day=31, hour=12, minute=00, second=00, tzinfo=tzone)
print("dt = " + str(dt))
for lat in range(-90, 91):
    try:
        sunrise, sunset = sunrise_sunset(lat, lon, dt, tzoffset)
        print("Sunrise is at " + sunrise.strftime("%m-%d-%Y %H:%M:%S"))
        print("Sunset is at  " + sunset.strftime("%m-%d-%Y %H:%M:%S"))
    except SunriseException:
        print("No sunrise at " + str(lat))
    except SunsetException:
        print("No sunset at " + str(lat))
lat = 33.386261
lon = -104.533221
tzone = tz.gettz('America/Denver')
tzoffset = -6.0 # during MDT
dt = datetime.now(tz=tzone)
sunrise, sunset = sunrise_sunset(lat, lon, dt, tzoffset)
sunrise = sunrise.replace(tzinfo=tzone) # make datetime aware
sunset = sunset.replace(tzinfo=tzone) # make datetime aware
if sunrise < dt < sunset:
    print("Day time")
else:
    print("Night time")   

Timezone Names

Use case:

select_choices = get_choices()
for choice in select_choices:
    print(choice[0] + ' ' + choice[1])