小编Ita*_*chi的帖子

在尝试通过pip安装任何python包时,我在parse()中得到了意外的arg:keyword编码.

我遇到了这个问题,因为我为python 3.6安装了tensorflow,这可能导致了html5lib和setuptools的一些问题.使用tar.gz文件(管理员安装)重新安装了html5lib1.0b10,但问题仍然存在.请帮忙!!

pip install spacy
Collecting spacy
Exception:
Traceback (most recent call last):
  File "C:\ProgramData\Anaconda3\lib\site-packages\pip\basecommand.py", line 215, in main
    status = self.run(options, args)
  File "C:\ProgramData\Anaconda3\lib\site-packages\pip\commands\install.py", line 335, in run
    wb.build(autobuilding=True)
  File "C:\ProgramData\Anaconda3\lib\site-packages\pip\wheel.py", line 749, in build
    self.requirement_set.prepare_files(self.finder)
  File "C:\ProgramData\Anaconda3\lib\site-packages\pip\req\req_set.py", line 380, in prepare_files
    ignore_dependencies=self.ignore_dependencies))
  File "C:\ProgramData\Anaconda3\lib\site-packages\pip\req\req_set.py", line 554, in _prepare_file
    require_hashes
  File "C:\ProgramData\Anaconda3\lib\site-packages\pip\req\req_install.py", line 278, in populate_link
    self.link = finder.find_requirement(self, upgrade)
  File "C:\ProgramData\Anaconda3\lib\site-packages\pip\index.py", line 465, in find_requirement
    all_candidates = self.find_all_candidates(req.name)
  File "C:\ProgramData\Anaconda3\lib\site-packages\pip\index.py", line 423, in find_all_candidates
    for page in …

lstrip 删除了附加字符，请帮助我理解原因。它是否从头开始删除所有输入字符？

'http://twitter.com/c_renwick'.lstrip('http://twitter.com/')
>>>'_renwick'

我有一个带有MapType列的pyspark DataFrame，并想通过键名将其分解为所有列

root
 |-- a: map (nullable = true)
 |    |-- key: string
 |    |-- value: long (valueContainsNull = true)

我想做sp_test.select('a.*') 但是出现错误：

AnalysisException：'只能加星展开结构数据类型。属性：ArrayBuffer(a);'

如果我们知道所有的关键，可以通过

sp_test.select(['a.%s'%item for item in ['a','b']]).show()

但我想删除关键的依赖

如果我们有StrucType列，可以通过执行以下操作轻松实现 display(nested_df.select('*', 'nested_array.*'))

root
 |-- _corrupt_record: string (nullable = true)
 |-- field1: long (nullable = true)
 |-- field2: long (nullable = true)
 |-- nested_array: struct (nullable = true)
 |    |-- nested_field1: long (nullable = true)
 |    |-- nested_field2: long (nullable = true)

我有些疑惑：

1. 可以MapType …