似乎无法导入Python中的特定模块

Question

我已经安装了TextBlob。你知道吗

$ python -m pip install TextBlob
Requirement already satisfied: TextBlob in c:\users\marc\anaconda2\lib\site-packages
Requirement already satisfied: nltk>=3.1 in c:\users\marc\anaconda2\lib\site-packages (from   TextBlob)
Requirement already satisfied: six in c:\users\marc\anaconda2\lib\site-packages (from    nltk>=3.1->TextBlob)

仅在我尝试运行此代码时：

from __future__ import division, unicode_literals

import math
from textblob import TextBlob as tb

def tf(word, blob):
 return blob.words.count(word) / len(blob.words)

def n_containing(word, bloblist):
 return sum(1 for blob in bloblist if word in blob.words)

def idf(word, bloblist):
 return math.log(len(bloblist) / (1 + n_containing(word, bloblist)))

def tfidf(word, blob, bloblist):
 return tf(word, blob) * idf(word, bloblist)

我仍然得到这个错误：

   from textblob import TextBlob as tb
ImportError: No module named 'textblob'

你觉得这里出了什么问题吗？你知道吗