Python新增年度剩余节假日推送功能技术咨询

Hey there! Great job getting the 3-week holiday reminder up and running—adding the "remaining holidays this year" feature is totally doable, let's break it down step by step.

First, let's align on how your calendar.txt works (I assume each line follows the format YYYY/MM/DD Holiday Name). Here's what we need to do:

1. Create a function to fetch all remaining holidays this year #

We need to read your holiday file, then filter out holidays that meet two criteria:

• They fall within the current year
• They haven't happened yet (i.e., are after today)

Here's a reusable function for that:

def get_remaining_holidays():
    current_year = datetime.date.today().year
    today = datetime.date.today()
    remaining_holidays = []
    
    # Use `with open()` to auto-close the file (safer than manual open/close)
    with open(holidayFile, 'r') as file:
        for line in file:
            line = line.strip()
            if not line:
                continue  # Skip empty lines to avoid errors
            
            # Split date string and holiday name
            date_str, *name_parts = line.split()
            holiday_name = ' '.join(name_parts)
            
            # Convert string date to a proper date object (with error handling)
            try:
                holiday_date = datetime.datetime.strptime(date_str, '%Y/%m/%d').date()
            except ValueError:
                print(f"Skipping invalid date format: {date_str}")
                continue
            
            # Check if the holiday is in this year and hasn't happened yet
            if holiday_date.year == current_year and holiday_date > today:
                remaining_holidays.append( (holiday_date, holiday_name) )
    
    # Sort holidays by date so they show up in chronological order
    remaining_holidays.sort(key=lambda x: x[0])
    return remaining_holidays

2. Update your reminder function to include both alerts #

Now we'll modify your checkTodaysHolidays() to:

• Keep checking for the 3-week-out holiday (your original feature)
• Fetch the full list of remaining holidays
• Combine both into a single, easy-to-read message for your email

Here's the updated function:

def checkTodaysHolidays():
    today = datetime.date.today()
    three_weeks_later = today + datetime.timedelta(days=21)
    upcoming_3week_holiday = None
    
    # Find the holiday 3 weeks from now (cleaned-up version of your original logic)
    with open(holidayFile, 'r') as file:
        for line in file:
            line = line.strip()
            if not line:
                continue
            date_str, *name_parts = line.split()
            try:
                holiday_date = datetime.datetime.strptime(date_str, '%Y/%m/%d').date()
            except ValueError:
                continue
            if holiday_date == three_weeks_later:
                upcoming_3week_holiday = ' '.join(name_parts)
                break
    
    # Get all remaining holidays this year
    remaining_holidays = get_remaining_holidays()
    
    # Build the final message content
    message = ""
    # Add 3-week reminder section
    if upcoming_3week_holiday:
        message += f"⚠️ 3周后即将到来的节假日：\n{three_weeks_later.strftime('%Y/%m/%d')} - {upcoming_3week_holiday}\n\n"
    else:
        message += "⚠️ 3周后没有即将到来的节假日\n\n"
    
    # Add remaining holidays section
    message += "📅 本年度剩余所有节假日：\n"
    if remaining_holidays:
        for date, name in remaining_holidays:
            message += f"{date.strftime('%Y/%m/%d')} - {name}\n"
    else:
        message += "本年度已无剩余节假日\n"
    
    # Replace this print with your existing email sending code
    print(message)
    # Example: send_email(subject="节假日提醒", content=message)

3. Quick Tips to Polish Your Code #

• Stick with with open(): It automatically closes the file, so you don't have to worry about forgetting file.close() and causing issues
• Keep error handling: The try/except blocks catch bad date formats in your calendar.txt, so your program won't crash unexpectedly
• Sort your lists: Users will appreciate seeing upcoming holidays in chronological order instead of random order
• Modularize email logic: If you haven't already, move your email sending code into a separate send_email() function—it makes your code easier to read and update later

内容的提问来源于stack exchange，提问作者vbabeginnercs