如何从文件中读取的每行字符串的开头删除 b？

Question

I'm reading a csv as follows.

data = pd.read_csv('news.csv')

It contains news and category as columns. I need to tokenize the words in news column. The problem is that each line of text in news column contains b at the beginning.

b'Longevity Increase Seen Around the World: WHO'
b'Chikungunya spreading, mosquito-borne virus ...

I tried How do I get rid of the b-prefix in a string in python? but this is for byte encoded string. So,

line = data['news'][0]
line.decode('utf-8')

would cause:

AttributeError: 'str' object has no attribute 'decode'

Each of those lines are of type str . How do I remove those b's ?

Answer 1

This b'' may point to byte type that could be decoded to string '' , but also could be a string itself with content b'...' .

For the first case you need line.decode() , the second case need line[2:-1] .