Django中出现No module named 'graphql.type'错误的求助

我是Django和GraphQL的新手，正在跟着教程学习。在虚拟环境用Python 3.8，Windows系统用Python 3.10，两边都出现相同错误，也查过Stack Overflow上的相关问题。我听说GraphQL可以生成查询，但不知道具体操作，目前遇到的报错如下：

Traceback (most recent call last):
  File "/usr/lib/python3.8/threading.py", line 932, in _bootstrap_inner
    self.run()
  File "/usr/lib/python3.8/threading.py", line 870, in run
    self._target(*self._args, **self._kwargs)
  File "/home/talha/ve/lib/python3.8/site-packages/django/utils/autoreload.py", line 64, in wrapper
    fn(*args, **kwargs)
  File "/home/talha/ve/lib/python3.8/site-packages/django/core/management/commands/runserver.py", line 125, in inner_run    autoreload.raise_last_exception()
  File "/home/talha/ve/lib/python3.8/site-packages/django/utils/autoreload.py", line 87, in raise_last_exception
    raise _exception[1]
  File "/home/talha/ve/lib/python3.8/site-packages/django/core/management/__init__.py", line 398, in execute
    autoreload.check_errors(django.setup)()
  File "/home/talha/ve/lib/python3.8/site-packages/django/utils/autoreload.py", line 64, in wrapper
    fn(*args, **kwargs)
  File "/home/talha/ve/lib/python3.8/site-packages/django/__init__.py", line 24, in setup
    apps.populate(settings.INSTALLED_APPS)
  File "/home/talha/ve/lib/python3.8/site-packages/django/apps/registry.py", line 91, in populate
    app_config = AppConfig.create(entry)
  File "/home/talha/ve/lib/python3.8/site-packages/django/apps/config.py", line 193, in create
    import_module(entry)
  File "/usr/lib/python3.8/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1014, in _gcd_import
  File "<frozen importlib._bootstrap>", line 991, in _find_and_load
  File "<frozen importlib._bootstrap>", line 961, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "<frozen importlib._bootstrap>", line 1014, in _gcd_import
  File "<frozen importlib._bootstrap>", line 991, in _find_and_load
  File "<frozen importlib._bootstrap>", line 961, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "<frozen importlib._bootstrap>", line 1014, in _gcd_import
  File "<frozen importlib._bootstrap>", line 991, in _find_and_load
  File "<frozen importlib._bootstrap>", line 975, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 671, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 783, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "/home/talha/ve/lib/python3.8/site-packages/ariadne/__init__.py", line 1, in <module>
    from .enums import (
  File "/home/talha/ve/lib/python3.8/site-packages/ariadne/enums.py", line 17, in <module>
    from graphql.type import GraphQLEnumType, GraphQLNamedType, GraphQLSchema
ModuleNotFoundError: No module named 'graphql.type'

解决方法 #

这个错误是因为Ariadne依赖的graphql-core包未正确安装，或者版本不兼容导致的，按以下步骤修复：

1. 卸载现有冲突的包：

pip uninstall -y graphql-core graphql-relay ariadne

2. 重新安装兼容版本的依赖：
   直接让pip自动处理兼容配置：

pip install ariadne

如果自动安装仍有问题，手动指定经过验证的兼容版本：

pip install graphql-core==3.2.3 ariadne==0.20.0

3. 验证安装结果：

pip list | grep graphql

确保输出中存在graphql-core，且版本符合Ariadne的要求。

关于GraphQL生成查询的操作说明 #

当你配置好Ariadne和Django后，有两种常用方式生成并执行查询：

• GraphQL Playground：启动Django服务后，访问http://localhost:8000/graphql（路径根据你的配置调整），在界面中编写查询语句，比如：

query {
  allPosts {
    id
    title
  }
}

点击执行按钮即可获取返回的数据。

• curl命令：通过POST请求发送查询到GraphQL端点：

curl -X POST -H "Content-Type: application/json" -d '{"query": "query { allPosts { id title } }"}' http://localhost:8000/graphql

内容的提问来源于stack exchange，提问作者Talha Zafar