為什么我在嘗試在 Django 中運行洗掉超過 30 天的訪客帳戶的自定義命令時收到錯誤“'datetime.timezone' has no attribute 'now'”？它在views.py中的其他地方作業，我以同樣的方式匯入它。由于命令位于不同的檔案夾中，我是否必須以不同的方式匯入它？（管理/命令/）
from django.core.management.base import BaseCommand
from datetime import timezone, timedelta
from gridsquid.models import User, Tile
DEFAULT_TILE_IMG_NAME = "defaultsquid.svg"
MAX_GUEST_ACCOUNT_DAYS = 30
class Command(BaseCommand):
def handle(self, *args, **options):
"""
Deletes all guest user accounts and their media if older than MAX_GUEST_ACCOUNT_DAYS
"""
# Get all guest accounts created before the limit
expired_guests_count = User.objects.filter(guest=True).filter(date_joined__lt=timezone.now()-timedelta(days=MAX_GUEST_ACCOUNT_DAYS)).count()
expired_guests = User.objects.filter(guest=True).filter(date_joined__lt=timezone.now()-timedelta(days=MAX_GUEST_ACCOUNT_DAYS))
for guest in expired_guests:
tiles = Tile.objects.select_related("user").filter(user=guest).all()
for tile in tiles:
# Delete image if not default image
if DEFAULT_TILE_IMG_NAME not in tile.image.url:
tile.image.delete()
# Delete audio file if there is one
if tile.audio is not None:
tile.audio.delete()
# Delete guest account
guest.delete()
uj5u.com熱心網友回復：
from django.utils import timezone
您需要像這樣匯入它，這是檔案
uj5u.com熱心網友回復：
將匯入更改為：
from django.utils import timezone
from datetime import timedelta
它會更好地作業。Django 也使用日期時間。
uj5u.com熱心網友回復：
當我們嘗試直接在 datetime 模塊上呼叫 now 方法時，會出現錯誤“AttributeError module 'datetime' has no attribute 'now'”。要解決錯誤，請使用以下代碼
import datetime
print(datetime.datetime.now())
print(timezone.now())
它會成功的
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標籤：Pythondjango
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