我该解决这个python错误什么?self.stdin.write(input)typeError:write()参数必

Question

我正在尝试执行以下代码，但它没有运行。下面粘贴的错误日志。这个问题可能是由于导入PG而引起的，但我不知道如何解决此问题。

import pandas as pd
from sqlalchemy import create_engine, MetaData, Table, select, engine
from sqlalchemy.orm import sessionmaker
import datetime
import cx_Oracle
import dateutil.relativedelta
import configparser
import sys, os
from boto3.s3.transfer import S3Transfer
import boto3
import pg
try:
    options = 'keepalives=1 keepalives_idle=200 keepalives_interval=200 keepalives_count=5'
    connection_string = "host=%s port=%s dbname=%s user=%s password=%s %s" % (
        'somehost', '8192', 'somedb', 'someuser', 'somepassword', options)
    print(connection_string)
    con = pg.connect(dbname=connection_string)
    print('Connected to Redshift.Connection Detail : %s' % con)
except Exception as e:
    print('Unable to Connect to Redshift')
    print(e.message)
    print('No')
    sys.exit(1)

C:UsersolaaDesktopCWB> python .my.py Traceback (most recent call last):   File ".my.py", line 11, in <module>
    import pg   File "C:UsersolaaAppDataLocalProgramsPythonPython36libsite-packagespg__init__.py", line 1, in <module>
    from .core import (   File "C:UsersolaaAppDataLocalProgramsPythonPython36libsite-packagespgcore.py", line 6, in <module>
    from . import glfw   File "C:UsersolaaAppDataLocalProgramsPythonPython36libsite-packagespgglfw.py", line 138, in <module>
    ['', '/usr/lib', '/usr/local/lib', 'C:/Users/olaa/AppData/Local/Programs/Python/Python36/Lib/site-packages/pg/'],
_g lfw_get_version)   File "C:UsersolaaAppDataLocalProgramsPythonPython36libsite-packagespgglfw.py", line 74, in _load_library
    version = version_check_callback(filename)   File "C:UsersolaaAppDataLocalProgramsPythonPython36libsite-packagespgglfw.py", line 130, in _glfw_get_versi on
    out = process.communicate(_to_char_p(filename))[0]   File "C:UsersolaaAppDataLocalProgramsPythonPython36libsubprocess.py", line 836, in communicate
    stdout, stderr = self._communicate(input, endtime, timeout)   File "C:UsersolaaAppDataLocalProgramsPythonPython36libsubprocess.py", line 1076, in _communicate
    self._stdin_write(input)   File "C:UsersolaaAppDataLocalProgramsPythonPython36libsubprocess.py", line 776, in _stdin_write
    self.stdin.write(input) TypeError: write() argument must be str, not bytes
Traceback (most recent call last):
  File "<string>", line 28, in <module>
EOFError: EOF when reading a line

Answer 1

import pg

这不是Postgres库。这是一个OpenGL图形库

即使该导入有效，它也会在con = pg.connect( ...

失败

您正在尝试连接到Redshift/Postgres，因此请尝试使用实际的Postgres客户端之一

通常，Python用户想使用psycopg2，除非他们有强有力的理由尝试另一个驱动程序

https://wiki.postgresql.org/wiki/python