时间转换

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import time
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from datetime import datetime
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# 可手动指定
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time_stamp = time.time() #1633763846.883627
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# 转元组
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time.gmtime(time_stamp)   # UTC 时间
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time.localtime(time_stamp)
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# 返回 time.struct_time(tm_year=2021, tm_mon=10, tm_mday=11, tm_hour=20, tm_min=4, tm_sec=50, tm_wday=0, tm_yday=284, tm_isdst=0)
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datetime.fromtimestamp(time_stamp)
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# 返回 datetime.datetime(2021, 10, 11, 20, 4, 3, 315279)
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# 转指定字符串格式
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# strftime 需要先把时间戳转成元组格式
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time.strftime('%Y-%m-%d %H:%M%S', time.localtime(time_stamp))
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datetime.utcfromtimestamp(time_stamp).strftime('%Y-%m-%d %H:%M:%S')
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# 返回 2011-11-11 06:07:42

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from datetime import datetime
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# 转时间元组（date.isoformat() 逆操作）
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datetime.fromisoformat('2021-12-12 06:07:42')
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# 返回 datetime.datetime(2021, 12, 12, 6, 7, 42)

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from datetime import time
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# 转换 20220329_002128 为 datetime 格式
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datetime.strptime('20220329_002128', '%Y%m%d_%H%M%S')
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# 返回 datetime.datetime(2022, 3, 29, 0, 21, 28)

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import time
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from datetime import datetime
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# 转时间戳
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time.mktime(time.localtime())  # 可自行提供9个参数
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# 转字符串
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time.strftime('%Y-%m-%d %H:%M:%S', time.localtime())
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datetime.now().strftime('%Y-%m-%d %H:%M:%S')
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# 返回 2021-10-11 23:24:21