小编Pyt*_*kie的帖子

我正在使用pandas以python方式读取csv文件

data = pd.read_csv('file1.csv', error_bad_lines=False)

我正在跳过第6行:预计4个领域,看到6个

如何阻止此警告出现？谢谢

我正在尝试在pyspark中拆分数据帧这是我拥有的数据

df = sc.parallelize([[1, 'Foo|10'], [2, 'Bar|11'], [3,'Car|12']]).toDF(['Key', 'Value'])
df = df.withColumn('Splitted', split(df['Value'], '|')[0])

我有

+-----+---------+-----+
|Key|Value|Splitted   |
+-----+---------+-----+
|    1|   Food|10|   F|
|    2|   Bar|11 |   B|
|    3|   Caring 12| C|
+-----+---------+-----+

但我想要

+-----+---------+-----+
|Key  | Value|Splitted|
+-----+---------+-----+
|    1|   10|  Food   |
|    2|   11|  Bar    |
|    3|   12|Caring   |
+-----+---------+-----+

有人可以指出我做错了什么吗？

What if i have a unique situation like this?
df = sc.parallelize([[1, 'Foo|10|we'], [2, 'Bar|11|we'], [3,'Car|12|we']]).toDF(['Key', 'Value'])

+---+---------+
|Key|    Value|
+---+---------+
|  1|Foo|10|we|
| …

我有一个json文件,我试图访问该值,但我一直收到一个错误,上面写着"TypeError:string indices必须是整数,而不是str"

这是Json数据.

{'sentiment': '{\n  "0": {\n    "comment": "Chibok schoolgirls were swapped for 5 Boko Haram commanders \n    "username": "@NigeriaNewsdesk:, @todayng", \n    "score": 0.0\n  }\n}'}

data = val ['sentiment']打印数据将此返回给我

{
 "0": {
  "comment": "Chibok schoolgirls were swapped for 5 Boko Haram commanders", 
  "username": "@NigeriaNewsdesk:, @todayng", 
  "score": 0.0
 }
}

但是当我尝试访问键/值对时,我得到数据中的记录错误:print(records ["0"] ["username"])

TypeError: string indices must be integers, not str

知道我为什么会收到这些错误吗？谢谢