[英]Cannot Install psycopg2 in virtualenv in windows
我正在尝试在我的 VirtualEnv 中安装 Psycopg2,最初我遇到错误,它找不到 pg_config.exe,我通过在 PATH 中添加完整路径来解决它。
但随后它给出了错误 Microsoft Visual C++ 14.0 is required。 要删除它,我安装了 VC_redist.x64 VC_redist.x86。
我还在 VS 社区中安装了 C++ 开发模块。 但它仍然给出这个错误。
编辑:还下载并安装了 VS build tools 。
我的环境:Windows 10 SL,Python 3.8.0,VirtualEnv 16.7.7,pip 19.31。
psycopgmodule.obj : error LNK2001: unresolved external symbol _PQfreemem
psycopgmodule.obj : error LNK2001: unresolved external symbol _PQencryptPasswordConn
psycopgmodule.obj : error LNK2001: unresolved external symbol _PQencryptPassword
psycopgmodule.obj : error LNK2001: unresolved external symbol _PQinitOpenSSL
psycopgmodule.obj : error LNK2001: unresolved external symbol _PQconninfoParse
psycopgmodule.obj : error LNK2001: unresolved external symbol _PQerrorMessage
psycopgmodule.obj : error LNK2001: unresolved external symbol _PQlibVersion
psycopgmodule.obj : error LNK2001: unresolved external symbol _PQconninfoFree
green.obj : error LNK2001: unresolved external symbol _PQclear
pqpath.obj : error LNK2001: unresolved external symbol _PQbinaryTuples
pqpath.obj : error LNK2001: unresolved external symbol _PQsetnonblocking
pqpath.obj : error LNK2001: unresolved external symbol _PQgetvalue
pqpath.obj : error LNK2001: unresolved external symbol _PQresultStatus
pqpath.obj : error LNK2001: unresolved external symbol _PQoidValue
pqpath.obj : error LNK2001: unresolved external symbol _PQcmdStatus
pqpath.obj : error LNK2001: unresolved external symbol _PQsocket
pqpath.obj : error LNK2001: unresolved external symbol _PQftablecol
pqpath.obj : error LNK2001: unresolved external symbol _PQputCopyData
pqpath.obj : error LNK2001: unresolved external symbol _PQstatus
pqpath.obj : error LNK2001: unresolved external symbol _PQisBusy
pqpath.obj : error LNK2001: unresolved external symbol _PQconsumeInput
pqpath.obj : error LNK2001: unresolved external symbol _PQresultErrorField
pqpath.obj : error LNK2001: unresolved external symbol _PQfsize
pqpath.obj : error LNK2001: unresolved external symbol _PQfname
pqpath.obj : error LNK2001: unresolved external symbol _PQsendQuery
pqpath.obj : error LNK2001: unresolved external symbol _PQgetCopyData
pqpath.obj : error LNK2001: unresolved external symbol _PQftable
pqpath.obj : error LNK2001: unresolved external symbol _PQflush
pqpath.obj : error LNK2001: unresolved external symbol _PQftype
pqpath.obj : error LNK2001: unresolved external symbol _PQnfields
pqpath.obj : error LNK2001: unresolved external symbol _PQresultErrorMessage
pqpath.obj : error LNK2001: unresolved external symbol _PQexec
pqpath.obj : error LNK2001: unresolved external symbol _PQfmod
pqpath.obj : error LNK2001: unresolved external symbol _PQcmdTuples
pqpath.obj : error LNK2001: unresolved external symbol _PQntuples
pqpath.obj : error LNK2001: unresolved external symbol _PQresStatus
pqpath.obj : error LNK2001: unresolved external symbol _PQputCopyEnd
pqpath.obj : error LNK2001: unresolved external symbol _PQgetResult
utils.obj : error LNK2001: unresolved external symbol _PQescapeString
utils.obj : error LNK2001: unresolved external symbol _PQescapeStringConn
utils.obj : error LNK2001: unresolved external symbol _PQescapeIdentifier
connection_int.obj : error LNK2001: unresolved external symbol _PQconnectPoll
connection_int.obj : error LNK2001: unresolved external symbol _PQserverVersion
connection_int.obj : error LNK2001: unresolved external symbol _PQnotifies
connection_int.obj : error LNK2001: unresolved external symbol _PQsetNoticeProcessor
connection_int.obj : error LNK2001: unresolved external symbol _PQgetCancel
connection_int.obj : error LNK2001: unresolved external symbol _PQfinish
connection_int.obj : error LNK2001: unresolved external symbol _PQprotocolVersion
connection_int.obj : error LNK2001: unresolved external symbol _PQfreeCancel
connection_int.obj : error LNK2001: unresolved external symbol _PQconnectdb
connection_int.obj : error LNK2001: unresolved external symbol _PQconnectStart
connection_int.obj : error LNK2001: unresolved external symbol _PQparameterStatus
connection_type.obj : error LNK2001: unresolved external symbol _PQcancel
connection_type.obj : error LNK2001: unresolved external symbol _PQtransactionStatus
connection_type.obj : error LNK2001: unresolved external symbol _PQbackendPID
connection_type.obj : error LNK2001: unresolved external symbol _PQconninfo
cursor_type.obj : error LNK2001: unresolved external symbol _PQgetisnull
cursor_type.obj : error LNK2001: unresolved external symbol _PQgetlength
conninfo_type.obj : error LNK2001: unresolved external symbol _PQsslInUse
conninfo_type.obj : error LNK2001: unresolved external symbol _PQconnectionNeedsPassword
conninfo_type.obj : error LNK2001: unresolved external symbol _PQpass
conninfo_type.obj : error LNK2001: unresolved external symbol _PQdb
conninfo_type.obj : error LNK2001: unresolved external symbol _PQsslAttribute
conninfo_type.obj : error LNK2001: unresolved external symbol _PQport
conninfo_type.obj : error LNK2001: unresolved external symbol _PQoptions
conninfo_type.obj : error LNK2001: unresolved external symbol _PQconnectionUsedPassword
conninfo_type.obj : error LNK2001: unresolved external symbol _PQsslAttributeNames
conninfo_type.obj : error LNK2001: unresolved external symbol _PQuser
conninfo_type.obj : error LNK2001: unresolved external symbol _PQhost
lobject_int.obj : error LNK2001: unresolved external symbol _lo_truncate
lobject_int.obj : error LNK2001: unresolved external symbol _lo_write
lobject_int.obj : error LNK2001: unresolved external symbol _lo_export
lobject_int.obj : error LNK2001: unresolved external symbol _lo_import
lobject_int.obj : error LNK2001: unresolved external symbol _lo_creat
lobject_int.obj : error LNK2001: unresolved external symbol _lo_read
lobject_int.obj : error LNK2001: unresolved external symbol _lo_tell
lobject_int.obj : error LNK2001: unresolved external symbol _lo_create
lobject_int.obj : error LNK2001: unresolved external symbol _lo_lseek
lobject_int.obj : error LNK2001: unresolved external symbol _lo_unlink
lobject_int.obj : error LNK2001: unresolved external symbol _lo_open
lobject_int.obj : error LNK2001: unresolved external symbol _lo_close
adapter_binary.obj : error LNK2001: unresolved external symbol _PQescapeByteaConn
adapter_binary.obj : error LNK2001: unresolved external symbol _PQescapeBytea
build\lib.win32-3.8\psycopg2\_psycopg.cp38-win32.pyd : fatal error LNK1120: 83 unresolved externals
error: command 'C:\\Program Files (x86)\\Microsoft Visual Studio\\2019\\Community\\VC\\Tools\\MSVC\\14.23.28105\\bin\\HostX86\\x86\\link.exe' failed with exit status 1120
background: I am doing development in Django which uses pgSQL, for some reasons, i did a clean install of windows and after windows installation, i run my virtualenv but it could not detect any package(maybe because my env was created in python 3.7 and现在我有 python 3.8(尽管我确实尝试使用 python 3.7 安装它))。 所以我不得不重建 virtualenv 并且目前被困在 psycopg2
安装python 64位版本(官网x86-64)。 在安装了正确版本的 python 后,我遇到了同样的问题,并且做了你所做的 evrt 并且它没有工作,我解决了这个问题。
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