Compilare mysql-python su Windows con PIP

Question

Così ho installato Python 2.7 e setuptools sul mio laptop Windows 7. Ho anche installato Visual Studio 2008 Express e MySQL con gli strumenti di sviluppo.

Sto cercando di installare MySQL-python tramite pip come:

pip install mysql-python 

sto ottenendo gli errori di collegamento:

Creating library build\temp.win32-2.7\Release\_mysql.lib and object build\temp.win32-2.7\Release\_mysql.exp 

_mysql.obj : error LNK2019: unresolved external symbol _mysql_error@4 referenced in function __mysql_Exception 

_mysql.obj : error LNK2019: unresolved external symbol _mysql_errno@4 referenced in function __mysql_Exception 

_mysql.obj : error LNK2019: unresolved external symbol _mysql_server_init@12 referenced in function __mysql_server_init 

_mysql.obj : error LNK2019: unresolved external symbol _mysql_server_end@0 referenced in function __mysql_server_end 

_mysql.obj : error LNK2019: unresolved external symbol _mysql_thread_safe@0 referenced in function __mysql_thread_safe 

_mysql.obj : error LNK2019: unresolved external symbol _mysql_fetch_fields@4 referenced in function __mysql_ResultObject_Initialize 

_mysql.obj : error LNK2019: unresolved external symbol _mysql_num_fields@4 referenced in function __mysql_ResultObject_Initialize 

_mysql.obj : error LNK2019: unresolved external symbol _mysql_field_count@4 referenced in function __mysql_ResultObject_Initialize 

_mysql.obj : error LNK2019: unresolved external symbol _mysql_store_result@4 referenced in function __mysql_ResultObject_Initialize 

_mysql.obj : error LNK2019: unresolved external symbol _mysql_use_result@4 referenced in function __mysql_ResultObject_Initialize 

_mysql.obj : error LNK2019: unresolved external symbol _mysql_real_connect@32 referenced in function __mysql_ConnectionObject_Initialize 

_mysql.obj : error LNK2019: unresolved external symbol _mysql_ssl_set@24 referenced in function __mysql_ConnectionObject_Initialize 

_mysql.obj : error LNK2019: unresolved external symbol _mysql_options@12 referenced in function __mysql_ConnectionObject_Initialize 

_mysql.obj : error LNK2019: unresolved external symbol _mysql_init@4 referenced in function __mysql_ConnectionObject_Initialize 

_mysql.obj : error LNK2019: unresolved external symbol _mysql_close@4 referenced in function __mysql_ConnectionObject_close 

_mysql.obj : error LNK2019: unresolved external symbol _mysql_affected_rows@4 referenced in function __mysql_ConnectionObject_affected_rows 

_mysql.obj : error LNK2019: unresolved external symbol _mysql_debug@4 referenced in function __mysql_debug 

_mysql.obj : error LNK2019: unresolved external symbol _mysql_dump_debug_info@4 referenced in function __mysql_ConnectionObject_dump_debug_info 

_mysql.obj : error LNK2019: unresolved external symbol _mysql_autocommit@8 referenced in function __mysql_ConnectionObject_autocommit 

_mysql.obj : error LNK2019: unresolved external symbol _mysql_commit@4 referenced in function __mysql_ConnectionObject_commit 

_mysql.obj : error LNK2019: unresolved external symbol _mysql_rollback@4 referenced in function __mysql_ConnectionObject_rollback 

_mysql.obj : error LNK2019: unresolved external symbol _mysql_next_result@4 referenced in function __mysql_ConnectionObject_next_result 

_mysql.obj : error LNK2019: unresolved external symbol _mysql_set_server_option@8 referenced in function __mysql_ConnectionObject_set_server_option 

_mysql.obj : error LNK2019: unresolved external symbol _mysql_sqlstate@4 referenced in function __mysql_ConnectionObject_sqlstate 

_mysql.obj : error LNK2019: unresolved external symbol _mysql_warning_count@4 referenced in function __mysql_ConnectionObject_warning_count 

_mysql.obj : error LNK2019: unresolved external symbol _mysql_escape_string@12 referenced in function __mysql_escape_string 

_mysql.obj : error LNK2019: unresolved external symbol _mysql_real_escape_string@16 referenced in function __mysql_escape_string 

_mysql.obj : error LNK2019: unresolved external symbol _mysql_fetch_lengths@4 referenced in function __mysql_row_to_tuple 

_mysql.obj : error LNK2019: unresolved external symbol __imp__strncpy referenced in function __mysql_row_to_dict 

_mysql.obj : error LNK2019: unresolved external symbol __imp__strncat referenced in function __mysql_row_to_dict 

_mysql.obj : error LNK2019: unresolved external symbol _memset referenced in function __mysql_row_to_dict_old 

_mysql.obj : error LNK2019: unresolved external symbol _mysql_fetch_row@4 referenced in function __mysql__fetch_row 

_mysql.obj : error LNK2019: unresolved external symbol _mysql_num_rows@4 referenced in function __mysql_ResultObject_fetch_row 

_mysql.obj : error LNK2019: unresolved external symbol _mysql_change_user@16 referenced in function __mysql_ConnectionObject_change_user 

_mysql.obj : error LNK2019: unresolved external symbol _mysql_character_set_name@4 referenced in function __mysql_ConnectionObject_character_set_name 

_mysql.obj : error LNK2019: unresolved external symbol _mysql_set_character_set@8 referenced in function __mysql_ConnectionObject_set_character_set 

_mysql.obj : error LNK2019: unresolved external symbol _mysql_get_character_set_info@8 referenced in function __mysql_ConnectionObject_get_character_set_info 

_mysql.obj : error LNK2019: unresolved external symbol _mysql_get_client_info@0 referenced in function __mysql_get_client_info 

_mysql.obj : error LNK2019: unresolved external symbol _mysql_get_host_info@4 referenced in function __mysql_ConnectionObject_get_host_info 

_mysql.obj : error LNK2019: unresolved external symbol _mysql_get_proto_info@4 referenced in function __mysql_ConnectionObject_get_proto_info 

_mysql.obj : error LNK2019: unresolved external symbol _mysql_get_server_info@4 referenced in function __mysql_ConnectionObject_get_server_info 

_mysql.obj : error LNK2019: unresolved external symbol _mysql_info@4 referenced in function __mysql_ConnectionObject_info 

_mysql.obj : error LNK2019: unresolved external symbol _mysql_insert_id@4 referenced in function __mysql_ConnectionObject_insert_id 

_mysql.obj : error LNK2019: unresolved external symbol _mysql_kill@8 referenced in function __mysql_ConnectionObject_kill 

_mysql.obj : error LNK2019: unresolved external symbol _mysql_ping@4 referenced in function __mysql_ConnectionObject_ping 

_mysql.obj : error LNK2019: unresolved external symbol _mysql_real_query@12 referenced in function __mysql_ConnectionObject_query 

_mysql.obj : error LNK2019: unresolved external symbol _mysql_select_db@8 referenced in function __mysql_ConnectionObject_select_db 

_mysql.obj : error LNK2019: unresolved external symbol _mysql_shutdown@8 referenced in function __mysql_ConnectionObject_shutdown 

_mysql.obj : error LNK2019: unresolved external symbol _mysql_stat@4 referenced in function __mysql_ConnectionObject_stat 

_mysql.obj : error LNK2019: unresolved external symbol _mysql_thread_id@4 referenced in function __mysql_ConnectionObject_thread_id 

_mysql.obj : error LNK2019: unresolved external symbol __imp__sprintf referenced in function __mysql_ConnectionObject_repr 

_mysql.obj : error LNK2019: unresolved external symbol _mysql_data_seek@12 referenced in function __mysql_ResultObject_data_seek 

_mysql.obj : error LNK2019: unresolved external symbol _mysql_row_seek@8 referenced in function __mysql_ResultObject_row_seek 

_mysql.obj : error LNK2019: unresolved external symbol _mysql_row_tell@4 referenced in function __mysql_ResultObject_row_seek 

_mysql.obj : error LNK2019: unresolved external symbol _mysql_free_result@4 referenced in function __mysql_ResultObject_dealloc 

LINK : error LNK2001: unresolved external symbol __DllMainCRTStartup@12 

build\lib.win32-2.7\_mysql.pyd : fatal error LNK1120: 56 unresolved externals 

error: command 'C:\\Program Files (x86)\\Microsoft Visual Studio 9.0\\VC\\BIN\\link.exe' failed with exit status 1120 

Tutte le idee come risolvere questo problema? Grazie

Answer 1

Sembra che l'installazione non rilevi la libreria client mysql. Trova e copia mysqlcppconn.dll dalla tua installazione mysql in una cartella che viene letta dallo script di compilazione, ad esempio la cartella windows. Per ulteriori informazioni consulta questo link https://dev.mysql.com/doc/connector-cpp/en/connector-cpp-apps-windows-visual-studio.html#connector-cpp-application-build-dynamic

Answer 2

Verificare che entrambi sono o 32bit o 64 bit, e non si dispone di una mancata corrispondenza tra di loro. Quando ho avuto questo problema, è stato perché ho installato un Python a 64 bit ma ho installato un MySQL a 32 bit. Il programma di installazione del pip non ha quindi potuto trovare i binari di corrispondenza a cui collegarsi e non è riuscito con questo messaggio. Risolvere il problema era semplicemente una questione di installare il Python a 32 bit sopra le righe e tutto funzionava.

Si noti che potrebbe anche essere possibile aggiornare MySQL a 64 bit, ma gli installer al momento per MySQL sembrano essere solo a 32 bit. È possibile installare tramite un file .zip scaricato dal sito ufficiale di MySQL anche se contiene binari a 64 bit.

per scoprire quale è stato installato:

• Per Python, basta andare alla riga di comando e digitare python. Dovrebbe mostrarti quale versione e se si trattava di un'installazione a 32 bit o 64 bit come quella

  Python 2.7.10 (predefinito, 23 maggio 2015, 09:40:32) [MSC v.1500 32 bit (Intel)] su win32

• per MySQL, il modo più semplice sarà probabilmente in quale cartella è installato. Se si installa per Program Files/, allora è a 64 bit, ma se si installa a Program Files (x86)/ è 32bit

Answer 3

I provato questo e ha funzionato per me su Win7 a 64 bit di anaconda. tipo di questo nella vostra prompt dei comandi:

pip installare MySQL-python

La mia installazione funziona perché sto utilizzando Studio 2010.

Answer 4

Ho avuto lo stesso problema e esattamente lo stesso errors.I non so perché ma

pip install Mysql-python 

ha dato errori. ma quando ho provato

easy_install Mysql-python 

E worked.I non so perché, ma lo ha fatto il lavoro, ma mi piacerebbe sapere perché.