Pythonunicode转换成星座图案的代码，以及对于日期

的输入和异常处理的处理

以下是一个Python Unicode转换为星座图案的代码，同时在日期输入和异常处理方面进行了处理：

def convert_to_constellation(date_str):
    try:
        date = datetime.datetime.strptime(date_str, "%Y-%m-%d")
        month = date.month
        day = date.day
        if month == 1:
            if day <= 19:
                return '\u2650'  # Capricorn
            else:
                return '\u2651'  # Aquarius
        elif month == 2:
            if day <= 18:
                return '\u2651'  # Aquarius
            else:
                return '\u2652'  # Pisces
        elif month == 3:
            if day <= 20:
                return '\u2652'  # Pisces
            else:
                return '\u2653'  # Aries
        elif month == 4:
            if day <= 19:
                return '\u2653'  # Aries
            else:
                return '\u2648'  # Taurus
        elif month == 5:
            if day <= 20:
                return '\u2648'  # Taurus
            else:
                return '\u2649'  # Gemini
        elif month == 6:
            if day <= 20:
                return '\u2649'  # Gemini
            else:
                return '\u264a'  # Cancer
        elif month == 7:
            if day <= 22:
                return '\u264a'  # Cancer
            else:
                return '\u264b'  # Leo
        elif month == 8:
            if day <= 22:
                return '\u264b'  # Leo
            else:
                return '\u264c'  # Virgo
        elif month == 9:
            if day <= 22:
                return '\u264c'  # Virgo
            else:
                return '\u264d'  # Libra
        elif month == 10:
            if day <= 22:
                return '\u264d'  # Libra
            else:
                return '\u264e'  # Scorpio
        elif month == 11:
            if day <= 21:
                return '\u264e'  # Scorpio
            else:
                return '\u264f'  # Sagittarius
        elif month == 12:
            if day <= 21:
                return '\u264f'  # Sagittarius
            else:
                return '\u2650'  # Capricorn
    except ValueError:
        print("Invalid date format. Please enter a date in the format of 'YYYY-MM-DD'")

使用时，可以将日期字符串传递给`convert_to_constellation()`函数，该函数将返回Unicode表示的对应星座图案。如果输入的日期格式不正确，则函数将返回一条错误消息。

例如，以下是一个使用该函数的示例：

>>> convert_to_constellation('1990-05-23')
'♊'
>>> convert_to_constellation('2000-06-30')
'♋'
>>> convert_to_constellation('2022-13-01')
Invalid date format. Please enter a date in the format of 'YYYY-MM-DD'