Alarm Clock File

Alarm Clock.py

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+import datetime
+import os
+import time
+import random
+import webbrowser
+// If video URL file does not exist, create one
+if not os.path.isfile("youtube_alarm_videos.txt"):
+    print('Creating "youtube_alarm_videos.txt"...')
+    with open("youtube_alarm_videos.txt", "w") as alarm_file:
+        alarm_file.write("https://www.youtube.com/watch?v=anM6uIZvx74")
+def check_alarm_input(alarm_time):
+    """Checks to see if the user has entered in a valid alarm time"""
+    if len(alarm_time) == 1: // [Hour] Format
+        if alarm_time[0] < 24 and alarm_time[0] >= 0:
+            return True
+    if len(alarm_time) == 2: // [Hour:Minute] Format
+        if alarm_time[0] < 24 and alarm_time[0] >= 0 and \
+           alarm_time[1] < 60 and alarm_time[1] >= 0:
+            return True
+    elif len(alarm_time) == 3: // [Hour:Minute:Second] Format
+        if alarm_time[0] < 24 and alarm_time[0] >= 0 and \
+           alarm_time[1] < 60 and alarm_time[1] >= 0 and \
+           alarm_time[2] < 60 and alarm_time[2] >= 0:
+            return True
+    return False
+// Get user input for the alarm time
+print("Set a time for the alarm (Ex. 06:30 or 18:30:00)")
+while True:
+    alarm_input = input(">> ")
+    try:
+        alarm_time = [int(n) for n in alarm_input.split(":")]
+        if check_alarm_input(alarm_time):
+            break
+        else:
+            raise ValueError
+    except ValueError:
+        print("ERROR: Enter time in HH:MM or HH:MM:SS format")
+// Convert the alarm time from [H:M] or [H:M:S] to seconds
+seconds_hms = [3600, 60, 1] // Number of seconds in an Hour, Minute, and Second
+alarm_seconds = sum([a*b for a,b in zip(seconds_hms[:len(alarm_time)], alarm_time)])
+// Get the current time of day in seconds
+now = datetime.datetime.now()
+current_time_seconds = sum([a*b for a,b in zip(seconds_hms, [now.hour, now.minute, now.second])])
+// Calculate the number of seconds until alarm goes off
+time_diff_seconds = alarm_seconds - current_time_seconds
+// If time difference is negative, set alarm for next day
+if time_diff_seconds < 0:
+    time_diff_seconds += 86400 // number of seconds in a day
+// Display the amount of time until the alarm goes off
+print("Alarm set to go off in %s" % datetime.timedelta(seconds=time_diff_seconds))
+// Sleep until the alarm goes off
+time.sleep(time_diff_seconds)
+// Time for the alarm to go off
+print("Wake Up!")
+// Load list of possible video URLs
+with open("youtube_alarm_videos.txt", "r") as alarm_file:
+    videos = alarm_file.readlines()
+// Open a random video from the list
+webbrowser.open(random.choice(videos))