Python string replace not working (bytes input expected?)

Question

I am trying to use Pyner (https://github.com/dat/pyner) for NER. I give it a string of text to extract named entities from it. But I get an error. I am attaching the snipet where the error arises:

for s in ('\f', '\n', '\r', '\t', '\v'): #strip whitespaces
    text = text.replace(s, '')

Error message: {TypeError: a bytes-like object is required, not 'str'}

This error occurs even when I try multiple types of inputs (bytes objects)

text = b'This'
text = bytes("This".encode('utf-8'))

I think the problem is that replace is not getting the right input type. I am using python 3.5. What am I doing wrong? Please help!

Answer 1

replace可以混合使用str，bytes但不能同时使用。

你可以像这样重写它：

for s in (b'\f', b'\n', b'\r', b'\t', b'\v'): #strip whitespaces except space!
    text = text.replace(s, b'')

您还可以应用strip适用于bytes类型的内容：

text = text.strip()  # remove all of the above + space

也可能：转换回str预先，尝试：

text = str(text)

或者

text = text.decode('utf-8')

（选择最佳解决方案以避免修改第三方包，正如帕特里克指出的那样）