Django项目“未找到模块标记2”

Question

当我在我的项目文件夹中运行python manage.py runserver时，我得到一个错误。像没有模块标记2一样，我将import markdown2 放在views.py文件的顶部。我还需要做什么？ 有人知道吗？ 谢谢

Traceback (most recent call last):
  File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/threading.py", line 932, in _bootstrap_inner
    self.run()
  File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/threading.py", line 870, in run
   
    self.check(display_num_errors=True)
  File "/Users/senayyakut/wiki/my_venv/lib/python3.8/site-packages/django/core/management/base.py", line 392, in check
    all_issues = checks.run_checks(
  File "/Users/senayyakut/wiki/my_venv/lib/python3.8/site-packages/django/core/checks/registry.py", line 70, in run_checks
    new_errors = check(app_configs=app_configs, databases=databases)
  File "/Users/senayyakut/wiki/my_venv/lib/python3.8/site-packages/django/core/checks/urls.py", line 13, in check_url_config
    return check_resolver(resolver)
  File "/Users/senayyakut/wiki/my_venv/lib/python3.8/site-packages/django/core/checks/urls.py", line 23, in check_resolver
    return check_method()
  File "/Users/senayyakut/wiki/my_venv/lib/python3.8/site-packages/django/urls/resolvers.py", line 408, in check
    for pattern in self.url_patterns:
  
    patterns = getattr(self.urlconf_module, "urlpatterns", self.urlconf_module)
  File "/Users/senayyakut/wiki/my_venv/lib/python3.8/site-packages/django/utils/functional.py", line 48, in __get__
    res = instance.__dict__[self.name] = self.func(instance)
    return import_module(self.urlconf_name)
  File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  
   
    return _bootstrap._gcd_import(name[level:], package, level)
 
  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 "/Users/senayyakut/wiki/encyclopedia/urls.py", line 3, in <module>
    from . import views
  File "/Users/senayyakut/wiki/encyclopedia/views.py", line 1, in <module>
    import markdown2
ModuleNotFoundError: No module named 'markdown2'```