Win7，Python3链接hive的各种问题（impyla）

• pip install sasl

  error: Microsoft Visual C++ 14.0 is required. Get it with “Microsoft Visual C++ Build Tools”: http://landinghub.visualstudio.com/visual-cpp-build-tools
  此错误需要安装Visual Studio
  安装地址：
  https://pan.baidu.com/s/1WaBxFghTll6Zofz1DGOZBg
  安装完之后需要打开visual Studio试运行一下
  或者重启电脑

  error: command’C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\BIN\cl.exe’ failed with exit status 2
  sasl版本不对，卸了重新安装

  下不了考虑采用：

1. conda install sasl （推荐）

2. 还下不了去 https://www.lfd.uci.edu/~gohlke/pythonlibs/#sasl 下载对应版本，我Python3.6，win764位下载的是 ：
   sasl‑0.2.1‑cp36‑cp36m‑win_amd64.whl
   在Python里输入

   import pip._internal
   print(pip._internal.pep425tags.get_supported())
   

   可以查看你的pip支持的配置

   到下载目录 pip install sasl‑0.2.1‑cp36‑cp36m‑win_amd64.whl（有可能需要先 pip install wheel）

• pip install thrift_sasl
  error:‘TSocket’ object has no attribute 'isOpen’
  报错尝试：pip install thrift_sasl==0.2.1 --no-deps（这里我的sasl也是0.2.1）

• pip install thrift或（pip install thrift==0.9.3）
  版本可参考

• pip install thriftpy
  来源https://blog.csdn.net/Xiblade/article/details/82318294

• pip install impyla

from impala.dbapi import connect 
from impala.util import as_pandas 
conn=connect(host='****',port=10000,user='***',auth_mechanism='PLAIN',
             database='***') 
cursor = conn.cursor() 
cursor.execute('show databases') 
print(as_pandas(cursor))

ThriftParserError: ThriftPy does not support generating module with path in protocol 'd’

D:\Anaconda3\Lib\site-packages\thriftpy\parser\parser.py的

    if url_scheme == '':
        with open(path) as fh:
            data = fh.read()
    elif url_scheme in ('http', 'https'):
        data = urlopen(path).read()
    else:
        raise ThriftParserError('ThriftPy does not support generating module '
                                'with path in protocol \'{}\''.format(
                                    url_scheme))

更改为

    if url_scheme == '':
        with open(path) as fh:
            data = fh.read()
    elif url_scheme in ('c', 'd','e','f''):
        with open(path) as fh:
            data = fh.read()


    elif url_scheme in ('http', 'https'):
        data = urlopen(path).read()
    else:
        raise ThriftParserError('ThriftPy does not support generating module '
                                'with path in protocol \'{}\''.format(
                                    url_scheme))

命令行使用python -m py_comile parser.py 进行编译，即可
原文：https://blog.csdn.net/sinolover/article/details/77714648
(记得保存，用jupyter跑的记得重启程序！！)

module ‘sasl’ has no attribute 'Client’
sasl没删干净，建议手动删了重下，或参考
https://stackoverflow.com/questions/25278607/how-to-fix-error-attributeerror-module-object-has-no-attribute-client-in-p

thriftpy.protocol.exc.TProtocolException:TProtocolException(type=4)
连接的时候没有定义字段auth_mechanism

TypeError: can’t concat str to bytes

D:\Anaconda3\Lib\site-packages\thrift_sasl_init_.py
第94行代码

def _send_message(self, status, body):

    header = struct.pack(">BI", status, len(body))

    self._trans.write(header + body)

    self._trans.flush()

改为

def _send_message(self, status, body):

    header = struct.pack(">BI", status, len(body))

    if(type(body) is str):

        body = body.encode()

    self._trans.write(header + body)

    self._trans.flush()

原文：https://www.codercto.com/a/35849.html

其他参考：
https://www.codercto.com/a/35849.html
https://blog.csdn.net/Xiblade/article/details/82318294
https://www.cnblogs.com/free-easy0000/p/9638982.html
https://blog.csdn.net/qq_24908345/article/details/80595948