Python --- 常用自定义函数

1. 数值转天时分

# 时间格式转换
def time_format_conversion(seconds):
    """
    用于将运行时间等两个时间之间的时间戳之差（单位秒）转换成XX小时XX分钟XX秒的格式
    """
    onedays = 24 * 3600
    days, other = divmod(seconds, onedays)
    hour, other = divmod(other, 3600)
    minute, second = divmod(other, 60)
    try:
        if days:
            return f"{int(days)}天 {int(hour)}:{int(minute)}:{int(second)}"
        else:
            return f"{int(hour)}:{int(minute)}:{int(second)}"
    except Exception:
        if days:
            return f"{days}天 {hour}:{minute}:{second}"
        else:
            return f"{hour}:{minute}:{second}"

2. 将 datetime 转成本地时区时间

from django.utils import timezone

# 获取本地时区
tz = timezone.get_current_timezone()

# 将datetime对象转成本地时区时间
previous_closed_time= timezone.localtime(obj.status_source.previous_closed_time,tz)

# 格式化时间
previous_closed_time = datetime.strftime(previous_closed_time,"%Y-%m-%d %H:%M:%S")

3. 文件大小单位转换

def byteConverter(size, dot=2):
    size = float(size)
    # 位 比特 bit
    if 0 <= size < 1:
        human_size = str(round(size / 0.125, dot)) + 'b'
    # 字节 字节 Byte
    elif 1 <= size < 1024:
        human_size = str(round(size, dot)) + 'B'
    # 千字节 千字节 Kilo Byte
    elif math.pow(1024, 1) <= size < math.pow(1024, 2):
        human_size = str(round(size / math.pow(1024, 1), dot)) + 'KB'
    # 兆字节 兆 Mega Byte
    elif math.pow(1024, 2) <= size < math.pow(1024, 3):
        human_size = str(round(size / math.pow(1024, 2), dot)) + 'MB'
    # 吉字节 吉 Giga Byte
    elif math.pow(1024, 3) <= size < math.pow(1024, 4):
        human_size = str(round(size / math.pow(1024, 3), dot)) + 'GB'
    # 太字节 太 Tera Byte
    elif math.pow(1024, 4) <= size < math.pow(1024, 5):
        human_size = str(round(size / math.pow(1024, 4), dot)) + 'TB'
    # 拍字节 拍 Peta Byte
    elif math.pow(1024, 5) <= size < math.pow(1024, 6):
        human_size = str(round(size / math.pow(1024, 5), dot)) + 'PB'
    # 艾字节 艾 Exa Byte
    elif math.pow(1024, 6) <= size < math.pow(1024, 7):
        human_size = str(round(size / math.pow(1024, 6), dot)) + 'EB'
    # 泽它字节 泽 Zetta Byte
    elif math.pow(1024, 7) <= size < math.pow(1024, 8):
        human_size = str(round(size / math.pow(1024, 7), dot)) + 'ZB'
    # 尧它字节 尧 Yotta Byte
    elif math.pow(1024, 8) <= size < math.pow(1024, 9):
        human_size = str(round(size / math.pow(1024, 8), dot)) + 'YB'
    # 千亿亿亿字节 Bront Byte
    elif math.pow(1024, 9) <= size < math.pow(1024, 10):
        human_size = str(round(size / math.pow(1024, 9), dot)) + 'BB'
    # 百万亿亿亿字节 Dogga Byte
    elif math.pow(1024, 10) <= size < math.pow(1024, 11):
        human_size = str(round(size / math.pow(1024, 10), dot)) + 'NB'
    # 十亿亿亿亿字节 Dogga Byte
    elif math.pow(1024, 11) <= size < math.pow(1024, 12):
        human_size = str(round(size / math.pow(1024, 11), dot)) + 'DB'
    # 万亿亿亿亿字节 Corydon Byte
    elif math.pow(1024, 12) <= size:
        human_size = str(round(size / math.pow(1024, 12), dot)) + 'CB'
    # 负数
    else:
        raise ValueError('{}() takes number than or equal to 0, but less than 0 given.'.format(pybyte.__name__))
    return human_size