Python 以10为基数的int（）的文本无效：'；用户3'；按字段获取Django对象时

当我试图从FacebookProfile检索对象时，出现了以下错误：“invalid literal for int（），以10为基数：'user3'”

当获取id或任何int数据类型时，它不会给出任何错误

def index(request):
    current_user = request.user
    current_username = str(current_user.username)
    fbuser=FacebookProfile.objects.get(user__exact = current_username)
    iden=fbuser.access_token
    facebook = OpenFacebook(iden)
    info = facebook.get('me')
    html = "info: %s" % info
    output = html + 'current_user.username:  ' + current_user.username
    return HttpResponse(output)

回溯：

Traceback:
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/core/handlers/base.py" in get_response
  114.                     response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "/Users/josephtang/Dropbox/Code/SocialORD/ORDapp/views.py" in index
  40.   leme=FacebookProfile.objects.get(user__exact = current_username)
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/db/models/manager.py" in get
  151.         return self.get_queryset().get(*args, **kwargs)
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/db/models/query.py" in get
  298.         clone = self.filter(*args, **kwargs)
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/db/models/query.py" in filter
  590.         return self._filter_or_exclude(False, *args, **kwargs)
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/db/models/query.py" in _filter_or_exclude
  608.             clone.query.add_q(Q(*args, **kwargs))
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/db/models/sql/query.py" in add_q
  1198.         clause = self._add_q(where_part, used_aliases)
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/db/models/sql/query.py" in _add_q
  1232.                     current_negated=current_negated)
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/db/models/sql/query.py" in build_filter
  1122.                                                      lookup_type, value)
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/db/models/fields/related.py" in get_lookup_constraint
  1105.                      value[index]), AND)
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/utils/tree.py" in add
  104.         data = self._prepare_data(data)
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/db/models/sql/where.py" in _prepare_data
  79.             value = obj.prepare(lookup_type, value)
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/db/models/sql/where.py" in prepare
  352.             return self.field.get_prep_lookup(lookup_type, value)
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/db/models/fields/__init__.py" in get_prep_lookup
  369.             return self.get_prep_value(value)
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/db/models/fields/__init__.py" in get_prep_value
  613.         return int(value)

Exception Type: ValueError at /ORDapp/
Exception Value: invalid literal for int() with base 10: 'user3'

试着替换

fbuser=FacebookProfile.objects.get(user__exact = current_username)

与

或者如果要使用当前的\u用户名

fbuser=FacebookProfile.objects.get(user__username__exact=current_username)

---

不过我还是犯了和以前一样的错误。我怀疑这与期望int有关。我只是不知道如何使它不期望int。第三行起作用了。你能解释一下用户名是什么吗？非常感谢它基本上是说使用

用户

模型的

用户名

字段进行比较。附加的

\uuuu-exact

表示用户名必须与参数匹配。

fbuser=FacebookProfile.objects.get(user__username__exact=current_username)