python - 导入错误: No module named requests while running spark

Question

我正在尝试使用名为“requests”的 python 包以及使用 pyspark 的程序。我已经下载了所需的包，并且能够通过包含“导入请求”将其用于普通的 python 程序，但它不适用于 pyspark 程序并显示“ImportError:没有名为 requests 的模块”。

代码

def get_text(s):
    import requests
    url = s
    data = requests.get(url).text
    return data

调用函数

newrdd=newrdd.map(get_text)

输出错误行

16/12/12 15:42:33 WARN scheduler.TaskSetManager: Lost task 0.0 in stage 1.0 (TID 48, node090.cm.cluster): org.apache.spark.api.python.PythonException: Traceback (most recent call last):
  File "/local/hadoop-2/tmp/hadoop-yarn/nm-local-dir/usercache/wdps1615/appcache/application_1480500761259_0178/container_1480500761259_0178_01_000003/pyspark.zip/pyspark/worker.py", line 172, in     main
    process()
  File "/local/hadoop-2/tmp/hadoop-yarn/nm-local-dir/usercache/wdps1615/appcache/application_1480500761259_0178/container_1480500761259_0178_01_000003/pyspark.zip/pyspark/worker.py", line 167, in process
    serializer.dump_stream(func(split_index, iterator), outfile)
  File "/local/hadoop-2/tmp/hadoop-yarn/nm-local-dir/usercache/wdps1615/appcache/application_1480500761259_0178/container_1480500761259_0178_01_000003/pyspark.zip/pyspark/serializers.py", line 133, in dump_stream
    for obj in iterator:
  File "/var/scratch/wdps1615/spark-2.0.2-bin-without-hadoop/python/lib/pyspark.zip/pyspark/rdd.py", line 1507, in func
  File "/var/scratch/wdps1615/Entitytext.py", line 45, in get_text
    import requests
ImportError: No module named requests

Link to error screenshot

Answer 1

我遇到了同样的问题，这对我有用:

import sys
sys.path.append('/usr/local/lib/python3.5/dist-packages')
import requests

您也可以使用 python2.7 而不是 python3.5，但您必须确保 pip 软件包已安装并在该文件夹中可用。