安装 Pillow 后出现 ModuleNotFoundError

如何解决安装 Pillow 后出现 ModuleNotFoundError

无论我去哪个链接，HTTP 都会给我 ModuleNotFoundError。

ModuleNotFoundError 提供了以下信息：

ModuleNotFoundError at /web/

No module named 'django.core.context_processors'
Request Method: GET
Request URL:    http://127.0.0.1:8000/web/
Django Version: 3.1.5
Exception Type: ModuleNotFoundError
Exception Value:    
No module named 'django.core.context_processors'
Exception Location: <frozen importlib._bootstrap>,line 984,in _find_and_load_unlocked
Python Executable:  /Users/william/Documents/coding/WDTP/wfw_fixed/env/bin/python3
Python Version: 3.9.0
Python Path:    
['/Users/william/Documents/coding/WDTP/wfw_fixed/wfw','/Library/Frameworks/Python.framework/Versions/3.9/lib/python39.zip','/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9','/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/lib-dynload','/Users/william/Documents/coding/WDTP/wfw_fixed/env/lib/python3.9/site-packages']
Server time:    Sat,23 Jan 2021 00:07:14 +0000

自从我安装 Pillow 后就发生了这种情况。

在我的settings.py中：

"""
Django settings for wfw project.

Generated by 'django-admin startproject' using Django 3.1.5.

For more information on this file,see
https://docs.djangoproject.com/en/3.1/topics/settings/

For the full list of settings and their values,see
https://docs.djangoproject.com/en/3.1/ref/settings/
"""

from pathlib import Path
import os.path

# Build paths inside the project like this: BASE_DIR / 'subdir'.
BASE_DIR = Path(__file__).resolve().parent.parent

# Test for settings templates path
SETTINGS_PATH = os.path.dirname(os.path.dirname(__file__))

# Quick-start development settings - unsuitable for production
# See https://docs.djangoproject.com/en/3.1/howto/deployment/checklist/

# SECURITY WARNING: keep the secret key used in production secret!

# SECURITY WARNING: don't run with debug turned on in production!
DEBUG = True

ALLOWED_HOSTS = []


# Application definition

INSTALLED_APPS = [
    'django.contrib.admin','django.contrib.auth','django.contrib.contenttypes','django.contrib.sessions','django.contrib.messages','django.contrib.staticfiles','wfw_editor.apps.WfwEditorConfig','feedback.apps.FeedbackConfig',]

MIDDLEWARE = [
    'django.middleware.security.SecurityMiddleware','django.contrib.sessions.middleware.SessionMiddleware','django.middleware.common.CommonMiddleware','django.middleware.csrf.CsrfViewMiddleware','django.contrib.auth.middleware.AuthenticationMiddleware','django.contrib.messages.middleware.MessageMiddleware','django.middleware.clickjacking.XFrameOptionsMiddleware',]

ROOT_URLCONF = 'wfw.urls'

TEMPLATES = [
    {
        'BACKEND': 'django.template.backends.django.DjangoTemplates','DIRS': [os.path.join(BASE_DIR,'templates'),],'APP_DIRS': True,'OPTIONS': {
            'context_processors': [
                'django.template.context_processors.debug','django.template.context_processors.request','django.contrib.auth.context_processors.auth','django.contrib.messages.context_processors.messages','django.core.context_processors.i18n','django.core.context_processors.media','django.core.context_processors.static','django.core.context_processors.tz','django.core.context_processors',},]

我认为我不需要下面的部分，但我还是发布了：

WSGI_APPLICATION = 'wfw.wsgi.application'


# Database
# https://docs.djangoproject.com/en/3.1/ref/settings/#databases

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.sqlite3','NAME': BASE_DIR / 'db.sqlite3',}
}


# Password validation
# https://docs.djangoproject.com/en/3.1/ref/settings/#auth-password-validators

AUTH_PASSWORD_VALIDATORS = [
    {
        'NAME': 'django.contrib.auth.password_validation.UserAttributeSimilarityValidator',{
        'NAME': 'django.contrib.auth.password_validation.MinimumLengthValidator',{
        'NAME': 'django.contrib.auth.password_validation.CommonPasswordValidator',{
        'NAME': 'django.contrib.auth.password_validation.NumericPasswordValidator',]


# Internationalization
# https://docs.djangoproject.com/en/3.1/topics/i18n/

LANGUAGE_CODE = 'en-us'

TIME_ZONE = 'UTC'

USE_I18N = True

USE_L10N = True

USE_TZ = True


# Static files (CSS,JavaScript,Images)
# https://docs.djangoproject.com/en/3.1/howto/static-files/

STATIC_URL = '/static/'

我删除了 SECRET_KEY 变量。 问题是否发生在 settings.py 中？ 问题是因为我没有导入什么吗？

解决方法

您是想导入 #include <iostream> #include <vector> using namespace std; int main() { vector<int> x; int input; cout << "Enter vector members." << endl; while(cin >> input) { if (input % 2 != 0) { x.push_back(input); } if (x.size() == 10) { break; } cout << input << endl; // fail } system("pause"); } 而不是：

django.template.context_processors.*

因为，查看 'django.core.context_processors.i18n','django.core.context_processors.media','django.core.context_processors.static','django.core.context_processors.tz','django.core.context_processors', 内部，似乎没有名为 django.core 的模块：

context_processors