Python清单'in'陈述式无法正常运作

Question

I tried to used 'in' function to check some value available in a list or not. But it does not work correctly.

from nltk.tokenize import word_tokenize

x ='what are bad'
a= word_tokenize(x)[0]
qestion = ['what,why,how,are,am,should']

if a in qestion:
 print 'question'
else:
 print 'not a question'

I couldn't find the reason for that. Can any one help me to solve this.

Answer 1

The following certainly is a list, but I don't think it's the list that you were looking for.

 qestion = ['what,why,how,are,am,should']

i think what you wanted was

question = 'what,why,how,are,am,should'.split(',')

which produces

['what', 'why', 'how', 'are', 'am', 'should']

Which is more likely to full fill your IF x in y condition.