python-3.x - ModuleNotFoundError : No module named 'py4j'

Question

我安装了 Spark，但在将 pyspark 模块加载到 ipython 时遇到问题。我收到以下错误:

ModuleNotFoundError                       Traceback (most recent call last)
<ipython-input-2-49d7c4e178f8> in <module>
----> 1 import pyspark

/opt/spark/python/pyspark/__init__.py in <module>
     44 
     45 from pyspark.conf import SparkConf
---> 46 from pyspark.context import SparkContext
     47 from pyspark.rdd import RDD
     48 from pyspark.files import SparkFiles

/opt/spark/python/pyspark/context.py in <module>
     27 from tempfile import NamedTemporaryFile
     28 
---> 29 from py4j.protocol import Py4JError
     30 
     31 from pyspark import accumulators

ModuleNotFoundError: No module named 'py4j'

Answer 1

如果可以直接运行spark，可能需要修复环境变量PYTHONPATH .检查目录$SPARK_HOME/python/lib/中的文件名.如果 Spark 版本为 2.4.3，则文件为 py4j-0.10.7-src.zip :

export PYTHONPATH=$SPARK_HOME/python:$SPARK_HOME/python/lib/py4j-0.10.7-src.zip:$PYTHONPATH