python - WTForms "too many values to unpack"与 SelectField

Question

我正在使用 WTForms 并尝试显示 SelectField，但出现以下错误:

>>> form.status()
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "C:\Python26\Lib\site-packages\wtforms\fields.py", line 136, in __call__
    return self.widget(self, **kwargs)
  File "C:\Python26\Lib\site-packages\wtforms\widgets.py", line 237, in __call__
    for val, label, selected in field.iter_choices():
  File "C:\Python26\Lib\site-packages\wtforms\fields.py", line 390, in iter_choices
    for value, label in self.choices:
ValueError: too many values to unpack

这是我的表格:

class TestForm(Form):
    status = SelectField(u'Status', choices=Test.statuses())

Test.statuses 静态方法返回一个字符串列表。我做错了什么？

Answer 1

It expects a list of (str, str) tuples, not a list of strings.