在Jupyter笔记本上，我尝试导入＆＃39; mrjob＆＃39;确保软件包已安装（pip2.7列表）后，Python 2.7包，但收到错误。有谁知道我错过了什么？
from mrjob.job import MRJob
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ImportError Traceback (most recent call last)
<ipython-input-45-77ddb811471e> in <module>()
----> 1 from mrjob.job import MRJob
ImportError: No module named mrjob.job