python
問題:今天是今年的第幾天
輸出:今天是今年的第幾天,今年已過去xx%,只剩下xxx天
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from datetime import datetime
now=datetime.now()
print("今天是今年的第{}天,今年已過去{:.2f}%,只剩下{}天".format((now-datetime(now.year,1,1)).days+1,
100*((now-datetime(now.year,1,1)).days+1)/(datetime(now.year+1,1,1)-datetime(now.year,1,1)).days,
(datetime(now.year+1,1,1)-now).days))
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