pandas 长度不匹配错误的异常处理

Question

将 CSV 或 Excel 文件读入 pandas 时，例如：

import pandas as pd

df = pd.read_excel(inputfile)

我可能会收到长度不匹配错误：

'An error occurred: Length mismatch: Expected axis has 17 elements, new values have 12 elements'

处理此错误的正确异常是什么？它是从哪里导入的？我在库规范中没有看到它。就像是：

import pandas as pd
from pandas import errors
from errors import LengthException

try:
     df = pd.read_excel(inputfile)
except LengthException:
    print "Your axes were messed up!"