Python Project Calendar Maker

Overview

This program generates printable text files of monthly calendars for the month and year your enter. Dates and calendars are a tricky topic in programming because there are so many different rules for determining the number of days in a month, which years are leap years, and whcih day of the week a particular date falls on. Fortunately , Python's datetime moudle handles these details for you. This program focuses on generating the multiline string for the monthly calendarr page.

The Program in Action

How It Works

python 复制代码

""" Countdown , by Maxwell Pan 
Show a countdown timer animation using a seven-segment display.
Press Ctrl-C to stop.
More info at https://en.wikipedia.org/wiki/Seven-segment_display
Requires sevseg.py to be in the same folder.
View this code at https://nostarch.com/big-book-small-python-projects
Tags: tiny, artistic"""

import sys, time
import sevseg # Import our sevseg.py program.

# (!) Change this to any number of seconds:
secondsLeft = 1500

try:
    while True: #Main program loop.
        # Clear the screen by printing several newlines:
        print('\n' * 60)


        # Get the hours/minutes/seconds from secondsleft:
        # For example: 7265 is 2 hours, 1 minutes, 5 seconds.
        # So 7265 // 3600 is 2 hours:
        hours = str(secondsLeft // 3600)
        # And 7265 % 3600 is 65 , and 65 // 60 is 1 minute:
        minutes = str((secondsLeft % 3600) // 60)
        # And 7265 % 60 is 5 seconds:
        seconds = str(secondsLeft % 60)

        # Get the digit strings from the sevseg module:
        hDigits = sevseg.getSevSegStr(hours, 2)
        hTopRow, hMiddleRow, hBottomRow = hDigits.splitlines()

        mDigits = sevseg.getSevSegStr(minutes, 2)
        mTopRow, mMiddleRow, mBottomRow = mDigits.splitlines()

        sDigits = sevseg.getSevSegStr(seconds, 2)
        sTopRow, sMiddleRow, sBottomRow = sDigits.splitlines()

        # Display the digits:
        print(hTopRow    + '        ' + mTopRow +    '      ' + sTopRow)
        print(hMiddleRow + '    *   ' + mMiddleRow + '   *  ' + sMiddleRow)
        print(hBottomRow + '    *   ' + mBottomRow + '   *  ' + sBottomRow)

        if secondsLeft == 0:
            print()
            print('     * * * *  BOOM * * * *')
            break

        print()
        print('Press Ctrl-C to quit.')

        time.sleep(1) # Insert a one-second pause.
        secondsLeft -= 1
except KeyboardInterrupt:
    print('Countdown, by Maxwell')
    sys.exit() # When Ctrl-C is pressed, end the program.