WTForms：如何避免大整数的数字范围验证器中的溢出错误？

Question

我正在编写一个 Flask 网络应用程序，并且我正在使用 WTForms 的表单。 其中一个输入是 IntegerField

field = IntegerField('Field', validators=[InputRequired(), NumberRange(min=0, max=100)])

由于我使用的是验证器 NumberRange(min=0, max=100)，因此我正确地拒绝了像 10090 这样的输入，但是在插入太大的输入时，例如：

99999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999

我收到以下错误：

OverflowError: int too large to convert to float

我该如何解决这个问题？

Answer 1

这是wtforms 无法处理的事情，因此您必须：

try:
    field = IntegerField('Field', validators=[InputRequired(), NumberRange(min=0, max=100)])
except OverflowError as e:
    raise Exception(e.args[0]) # Or better yet - use the actuall exception thrown when the input is 101