Topic: [RISOLTO]strani errore nell'esecuzione di file python cgi  (Letto 1208 volte)

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Offline alduccio1983

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Salve a tutti,
è la mia prima volta qui e vi chiedo subito un aiuto per non rinunciare a questo ottimo linguaggio.
Devo creare un sito ed ho scelto python per la sua semplicità scrittura.
Praticamente non riesco a far partire i file .py che inserisco nella root principale di apache "c:\www", anzi...per meglio dire, partono, ma mi danno degli insoliti errori. Cmq voglio spiegarvi come ho impostato e configurato il tutto.

1- ho scaricato python 2.5
2- ho scaricato apache 2.2
3- ho scaricato mod_python 3.3.1 (praticamente...le versione coincidono tutte)
4- ho installato tutto con successo
5- ho modificato il file httpd, cambiando la configuarazione in questo modo:
 
Listen 80
   LoadModule python_module modules/mod_python.so
   DocumentRoot "C:/www"
  <Directory "C:/www">
  Options Indexes FollowSymLinks MultiViews
                AllowOverride All
                Order allow,deny
                allow from all

                AddHandler mod_python .py
                PythonHandler aldo                         <--- questo è il nome del fiel .py in c:\www\aldo.py
                PythonDebug On
</Directory>

Io personalmente pernso di aver impostato tutto al meglio ma quando vado a richiamare il file in "http://localhost/aldo.py mi esce questo errore:
Directory:      'C:/www/'
Filename:       'C:/www/aldo.py'
PathInfo:       ''

Phase:          'PythonHandler'
Handler:        'aldo'

Traceback (most recent call last):

  File "C:\Python25\lib\site-packages\mod_python\importer.py", line 1537, in HandlerDispatch
    default=default_handler, arg=req, silent=hlist.silent)

  File "C:\Python25\lib\site-packages\mod_python\importer.py", line 1206, in _process_target
    object = apache.resolve_object(module, object_str, arg, silent=silent)

  File "C:\Python25\Lib\site-packages\mod_python\apache.py", line 696, in resolve_object
    raise AttributeError, s

AttributeError: module 'C:\www\aldo.py' contains no 'handler'


MODULE CACHE DETAILS

Accessed:       Wed Apr 01 22:37:31 2009
Generation:     0

_mp_291da42c820bbee869e463838e2c125f {
  FileName:     'C:\\www\\aldo.py'
  Instance:     1 [IMPORT]
  Generation:   1
  Modified:     Tue Mar 31 23:35:12 2009
  Imported:     Wed Apr 01 22:37:31 2009
}

Secondo la vosta esperienza dove sbaglio? grazie per le vostre risposte e consigli
« Ultima modifica: Aprile 05, 2009, 12:14 da Charles_Stain »

Offline Markon

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Re: strani errore nell'esecuzione di file python cgi
« Risposta #1 il: Aprile 02, 2009, 15:52 »
Ciao!

Secondo me innanzitutto non bisogna lasciar perdere un linguaggio solo perchè all'inizio dà un errore. Altrimenti non va proprio bene.

Comunque:

[hlpycode]AttributeError: module 'C:\www\aldo.py' contains no 'handler'[/hlpycode]

Mostra il tuo file aldo.py se puoi, altrimenti l'errore te l'ha detto stesso lui: handler non c'è, per cosa  lo usi?

Ciao

Offline alduccio1983

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Re: strani errore nell'esecuzione di file python cgi
« Risposta #2 il: Aprile 02, 2009, 18:18 »
Salve Markon,
quindi tu pensi che non sia un errore dovuto ad una configurazione errata, ma ad un errore di precompilazione, giusto?
Riguardo al file è composto da una sola riga ,giusto per provare...
print "ciao mondo"
Io ho letto molto brevemente la sintassi del linguaggio, pensavo che fosse molto vicino al vecchio qbasic o simili (a parte la progammazzione cgi)
Forse ho sbagliato qualcosa?
Grazie per il tuo auito

Offline Markon

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Re: strani errore nell'esecuzione di file python cgi
« Risposta #3 il: Aprile 02, 2009, 18:36 »
no, allora non è il file aldo.py

c'è qualcosa nella configurazione che non va. Ho trovato questo che però non dice come ha risolto. Dice solo che il problema era dovuto a mod_python.

Dunque... prova un po' a vedere il manuale di mod python ...

O aspetta Simosito, che usa spesso cgi con Python.

Ciao

Offline Simosito

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Re: strani errore nell'esecuzione di file python cgi
« Risposta #4 il: Aprile 02, 2009, 19:18 »
Premetto che non ho molta esperienza con mod_python (che è diverso da Python via CGI).

Secondo me sbagli approcio: mod_python ha i suoi handler già pronti.

Se vuoi usare PSP (Python in stile PHP) devi modificare il file httpd nel seguente modo:
   AddHandler mod_python .psp .psp_
   PythonHandler mod_python.psp
   PythonDebug On
(mod_python.psp è un handler di default)

e poi nel tuo file, chiamato ad esempio aldo.psp scrivi:
[hlpycode]<%= 'Hello, world!' %>[/hlpycode]

Se invece vuoi usare un handler personalizzato (come stavi cercando di fare), il tuo file (quello specificato dopo PythonHandler nel httpd) dovrebbe essere impostato così:

[hlpycode]
    from mod_python import apache
    def handler(req):
        req.content_type = 'text/plain'
        req.write("Hello World!")
        return apache.OK
[/hlpycode]

(leggo dalla guida di mod_python)

qualora invece tu decidessi di non utilizzare mod_python ma di usare CGI:
crei un file .htaccess nella root del sito (per poter avere gli script fuori dalla cartella CGI):
Options +ExecCGI
Options +Indexes
AddHandler cgi-script .py

e il tuo aldo.py sarà:
[hlpycode]
#!/usr/bin/python
#(piattaforme *nix-like)
print  "Content-type: text/html\n"
print "Hello, world!"
[/hlpycode]

Saluti,
S~

Offline alduccio1983

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Re: strani errore nell'esecuzione di file python cgi
« Risposta #5 il: Aprile 04, 2009, 15:46 »
Salve simosito,
io praticamente ...visto i tuoi esempi, vorrei utillizzare i cgi.
Ti chiedo, visto che sono molto confuso...dall'installazione di apache, all'installazione di mod_python, quele modifiche devo fare per far partire correttanmente un file .py nella cartella root c:/www ?
 
ps: ho creato il file .htaccess nella root, ma quando ho fatto partire aldo.py mi diceva la barra di google "file non funzionante -errore 404"

ti rilascio il mio file httpd:

#
# This is the main Apache HTTP server configuration file.  It contains the
# configuration directives that give the server its instructions.
# See <URL:http://httpd.apache.org/docs/2.2> for detailed information.
# In particular, see
# <URL:http://httpd.apache.org/docs/2.2/mod/directives.html>
# for a discussion of each configuration directive.
#
# Do NOT simply read the instructions in here without understanding
# what they do.  They're here only as hints or reminders.  If you are unsure
# consult the online docs. You have been warned. 
#
# Configuration and logfile names: If the filenames you specify for many
# of the server's control files begin with "/" (or "drive:/" for Win32), the
# server will use that explicit path.  If the filenames do *not* begin
# with "/", the value of ServerRoot is prepended -- so "logs/foo.log"
# with ServerRoot set to "C:/Programmi/Apache Software Foundation/Apache2.2" will be interpreted by the
# server as "C:/Programmi/Apache Software Foundation/Apache2.2/logs/foo.log".
#
# NOTE: Where filenames are specified, you must use forward slashes
# instead of backslashes (e.g., "c:/apache" instead of "c:\apache").
# If a drive letter is omitted, the drive on which httpd.exe is located
# will be used by default.  It is recommended that you always supply
# an explicit drive letter in absolute paths to avoid confusion.

#
# ServerRoot: The top of the directory tree under which the server's
# configuration, error, and log files are kept.
#
# Do not add a slash at the end of the directory path.  If you point
# ServerRoot at a non-local disk, be sure to point the LockFile directive
# at a local disk.  If you wish to share the same ServerRoot for multiple
# httpd daemons, you will need to change at least LockFile and PidFile.
#
ServerRoot "C:/Programmi/Apache Software Foundation/Apache2.2"

#
# Listen: Allows you to bind Apache to specific IP addresses and/or
# ports, instead of the default. See also the <VirtualHost>
# directive.
#
# Change this to Listen on specific IP addresses as shown below to
# prevent Apache from glomming onto all bound IP addresses.
#
#Listen 12.34.56.78:80
Listen 80

#
# Dynamic Shared Object (DSO) Support
#
# To be able to use the functionality of a module which was built as a DSO you
# have to place corresponding `LoadModule' lines at this location so the
# directives contained in it are actually available _before_ they are used.
# Statically compiled modules (those listed by `httpd -l') do not need
# to be loaded here.
#
# Example:
# LoadModule foo_module modules/mod_foo.so
#
LoadModule actions_module modules/mod_actions.so
LoadModule alias_module modules/mod_alias.so
LoadModule asis_module modules/mod_asis.so
LoadModule auth_basic_module modules/mod_auth_basic.so
#LoadModule auth_digest_module modules/mod_auth_digest.so
#LoadModule authn_alias_module modules/mod_authn_alias.so
#LoadModule authn_anon_module modules/mod_authn_anon.so
#LoadModule authn_dbd_module modules/mod_authn_dbd.so
#LoadModule authn_dbm_module modules/mod_authn_dbm.so
LoadModule authn_default_module modules/mod_authn_default.so
LoadModule authn_file_module modules/mod_authn_file.so
#LoadModule authnz_ldap_module modules/mod_authnz_ldap.so
#LoadModule authz_dbm_module modules/mod_authz_dbm.so
LoadModule authz_default_module modules/mod_authz_default.so
LoadModule authz_groupfile_module modules/mod_authz_groupfile.so
LoadModule authz_host_module modules/mod_authz_host.so
#LoadModule authz_owner_module modules/mod_authz_owner.so
LoadModule authz_user_module modules/mod_authz_user.so
LoadModule autoindex_module modules/mod_autoindex.so
#LoadModule cache_module modules/mod_cache.so
#LoadModule cern_meta_module modules/mod_cern_meta.so
LoadModule cgi_module modules/mod_cgi.so
#LoadModule charset_lite_module modules/mod_charset_lite.so
#LoadModule dav_module modules/mod_dav.so
#LoadModule dav_fs_module modules/mod_dav_fs.so
#LoadModule dav_lock_module modules/mod_dav_lock.so
#LoadModule dbd_module modules/mod_dbd.so
#LoadModule deflate_module modules/mod_deflate.so
LoadModule dir_module modules/mod_dir.so
#LoadModule disk_cache_module modules/mod_disk_cache.so
#LoadModule dumpio_module modules/mod_dumpio.so
LoadModule env_module modules/mod_env.so
#LoadModule expires_module modules/mod_expires.so
#LoadModule ext_filter_module modules/mod_ext_filter.so
#LoadModule file_cache_module modules/mod_file_cache.so
#LoadModule filter_module modules/mod_filter.so
#LoadModule headers_module modules/mod_headers.so
#LoadModule ident_module modules/mod_ident.so
#LoadModule imagemap_module modules/mod_imagemap.so
LoadModule include_module modules/mod_include.so
#LoadModule info_module modules/mod_info.so
LoadModule isapi_module modules/mod_isapi.so
#LoadModule ldap_module modules/mod_ldap.so
#LoadModule logio_module modules/mod_logio.so
LoadModule log_config_module modules/mod_log_config.so
#LoadModule log_forensic_module modules/mod_log_forensic.so
#LoadModule mem_cache_module modules/mod_mem_cache.so
LoadModule mime_module modules/mod_mime.so
#LoadModule mime_magic_module modules/mod_mime_magic.so
LoadModule negotiation_module modules/mod_negotiation.so
#LoadModule proxy_module modules/mod_proxy.so
#LoadModule proxy_ajp_module modules/mod_proxy_ajp.so
#LoadModule proxy_balancer_module modules/mod_proxy_balancer.so
#LoadModule proxy_connect_module modules/mod_proxy_connect.so
#LoadModule proxy_ftp_module modules/mod_proxy_ftp.so
#LoadModule proxy_http_module modules/mod_proxy_http.so
#LoadModule rewrite_module modules/mod_rewrite.so
LoadModule setenvif_module modules/mod_setenvif.so
#LoadModule speling_module modules/mod_speling.so
#LoadModule ssl_module modules/mod_ssl.so
#LoadModule status_module modules/mod_status.so
#LoadModule substitute_module modules/mod_substitute.so
#LoadModule unique_id_module modules/mod_unique_id.so
#LoadModule userdir_module modules/mod_userdir.so
#LoadModule usertrack_module modules/mod_usertrack.so
#LoadModule version_module modules/mod_version.so
#LoadModule vhost_alias_module modules/mod_vhost_alias.so
LoadModule python_module modules/mod_python.so

<IfModule !mpm_netware_module>
<IfModule !mpm_winnt_module>
#
# If you wish httpd to run as a different user or group, you must run
# httpd as root initially and it will switch. 
#
# User/Group: The name (or #number) of the user/group to run httpd as.
# It is usually good practice to create a dedicated user and group for
# running httpd, as with most system services.
#
User daemon
Group daemon

</IfModule>
</IfModule>

# 'Main' server configuration
#
# The directives in this section set up the values used by the 'main'
# server, which responds to any requests that aren't handled by a
# <VirtualHost> definition.  These values also provide defaults for
# any <VirtualHost> containers you may define later in the file.
#
# All of these directives may appear inside <VirtualHost> containers,
# in which case these default settings will be overridden for the
# virtual host being defined.
#

#
# ServerAdmin: Your address, where problems with the server should be
# e-mailed.  This address appears on some server-generated pages, such
# as error documents.  e.g. admin@your-domain.com
#
ServerAdmin admin@localhost.it

#
# ServerName gives the name and port that the server uses to identify itself.
# This can often be determined automatically, but we recommend you specify
# it explicitly to prevent problems during startup.
#
# If your host doesn't have a registered DNS name, enter its IP address here.
#
#ServerName localhost:8080

#
# DocumentRoot: The directory out of which you will serve your
# documents. By default, all requests are taken from this directory, but
# symbolic links and aliases may be used to point to other locations.
#
DocumentRoot "C:/www"

#
# Each directory to which Apache has access can be configured with respect
# to which services and features are allowed and/or disabled in that
# directory (and its subdirectories).
#
# First, we configure the "default" to be a very restrictive set of
# features. 
#
<Directory />
   Options Indexes FollowSymLinks MultiViews
                AllowOverride None
                Order allow,deny
                allow from all
## Queste linee abilitano l'interpretazione dei file .py
                AddHandler mod_python .py
                PythonHandler mod_python.publisher
                PythonDebug On
## fine

 
</Directory>

#
# Note that from this point forward you must specifically allow
# particular features to be enabled - so if something's not working as
# you might expect, make sure that you have specifically enabled it
# below.
#

#
# This should be changed to whatever you set DocumentRoot to.
#
<Directory "C:/www">
   Options Indexes FollowSymLinks MultiViews
                AllowOverride None
                Order allow,deny
                allow from all
## Queste linee abilitano l'interpretazione dei file .py
                AddHandler mod_python .py
                PythonHandler mod_python.publisher
                PythonDebug On
## fine


</Directory>

#
# DirectoryIndex: sets the file that Apache will serve if a directory
# is requested.
#
<IfModule dir_module>
    DirectoryIndex index.html
</IfModule>

#
# The following lines prevent .htaccess and .htpasswd files from being
# viewed by Web clients.
#
<FilesMatch "^\.ht">
    Order allow,deny
    Deny from all
    Satisfy All
</FilesMatch>

#
# ErrorLog: The location of the error log file.
# If you do not specify an ErrorLog directive within a <VirtualHost>
# container, error messages relating to that virtual host will be
# logged here.  If you *do* define an error logfile for a <VirtualHost>
# container, that host's errors will be logged there and not here.
#
ErrorLog "logs/error.log"

#
# LogLevel: Control the number of messages logged to the error_log.
# Possible values include: debug, info, notice, warn, error, crit,
# alert, emerg.
#
LogLevel warn

<IfModule log_config_module>
    #
    # The following directives define some format nicknames for use with
    # a CustomLog directive (see below).
    #
    LogFormat "%h %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-Agent}i\"" combined
    LogFormat "%h %l %u %t \"%r\" %>s %b" common

    <IfModule logio_module>
      # You need to enable mod_logio.c to use %I and %O
      LogFormat "%h %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-Agent}i\" %I %O" combinedio
    </IfModule>

    #
    # The location and format of the access logfile (Common Logfile Format).
    # If you do not define any access logfiles within a <VirtualHost>
    # container, they will be logged here.  Contrariwise, if you *do*
    # define per-<VirtualHost> access logfiles, transactions will be
    # logged therein and *not* in this file.
    #
    CustomLog "logs/access.log" common

    #
    # If you prefer a logfile with access, agent, and referer information
    # (Combined Logfile Format) you can use the following directive.
    #
    #CustomLog "logs/access.log" combined
</IfModule>

<IfModule alias_module>
    #
    # Redirect: Allows you to tell clients about documents that used to
    # exist in your server's namespace, but do not anymore. The client
    # will make a new request for the document at its new location.
    # Example:
    # Redirect permanent /foo http://localhost/bar

    #
    # Alias: Maps web paths into filesystem paths and is used to
    # access content that does not live under the DocumentRoot.
    # Example:
    # Alias /webpath /full/filesystem/path
    #
    # If you include a trailing / on /webpath then the server will
    # require it to be present in the URL.  You will also likely
    # need to provide a <Directory> section to allow access to
    # the filesystem path.

    #
    # ScriptAlias: This controls which directories contain server scripts.
    # ScriptAliases are essentially the same as Aliases, except that
    # documents in the target directory are treated as applications and
    # run by the server when requested rather than as documents sent to the
    # client.  The same rules about trailing "/" apply to ScriptAlias
    # directives as to Alias.
    #
    ScriptAlias /cgi-bin/ "C:/Programmi/Apache Software Foundation/Apache2.2/cgi-bin/"

</IfModule>

<IfModule cgid_module>
    #
    # ScriptSock: On threaded servers, designate the path to the UNIX
    # socket used to communicate with the CGI daemon of mod_cgid.
    #
    #Scriptsock logs/cgisock
</IfModule>

#
# "C:/Programmi/Apache Software Foundation/Apache2.2/cgi-bin" should be changed to whatever your ScriptAliased
# CGI directory exists, if you have that configured.
#
<Directory "C:/Programmi/Apache Software Foundation/Apache2.2/cgi-bin">
    AllowOverride None
    Options None
    Order allow,deny
    Allow from all
</Directory>

#
# DefaultType: the default MIME type the server will use for a document
# if it cannot otherwise determine one, such as from filename extensions.
# If your server contains mostly text or HTML documents, "text/plain" is
# a good value.  If most of your content is binary, such as applications
# or images, you may want to use "application/octet-stream" instead to
# keep browsers from trying to display binary files as though they are
# text.
#
DefaultType text/plain

<IfModule mime_module>
    #
    # TypesConfig points to the file containing the list of mappings from
    # filename extension to MIME-type.
    #
    TypesConfig conf/mime.types

    #
    # AddType allows you to add to or override the MIME configuration
    # file specified in TypesConfig for specific file types.
    #
    #AddType application/x-gzip .tgz
    #
    # AddEncoding allows you to have certain browsers uncompress
    # information on the fly. Note: Not all browsers support this.
    #
    #AddEncoding x-compress .Z
    #AddEncoding x-gzip .gz .tgz
    #
    # If the AddEncoding directives above are commented-out, then you
    # probably should define those extensions to indicate media types:
    #
    AddType application/x-compress .Z
    AddType application/x-gzip .gz .tgz

    #
    # AddHandler allows you to map certain file extensions to "handlers":
    # actions unrelated to filetype. These can be either built into the server
    # or added with the Action directive (see below)
    #
    # To use CGI scripts outside of ScriptAliased directories:
    # (You will also need to add "ExecCGI" to the "Options" directive.)
    #
    #AddHandler cgi-script .cgi

    # For type maps (negotiated resources):
    #AddHandler type-map var

    #
    # Filters allow you to process content before it is sent to the client.
    #
    # To parse .shtml files for server-side includes (SSI):
    # (You will also need to add "Includes" to the "Options" directive.)
    #
    #AddType text/html .shtml
    #AddOutputFilter INCLUDES .shtml
</IfModule>

#
# The mod_mime_magic module allows the server to use various hints from the
# contents of the file itself to determine its type.  The MIMEMagicFile
# directive tells the module where the hint definitions are located.
#
#MIMEMagicFile conf/magic

#
# Customizable error responses come in three flavors:
# 1) plain text 2) local redirects 3) external redirects
#
# Some examples:
#ErrorDocument 500 "The server made a boo boo."
#ErrorDocument 404 /missing.html
#ErrorDocument 404 "/cgi-bin/missing_handler.pl"
#ErrorDocument 402 http://localhost/subscription_info.html
#

#
# EnableMMAP and EnableSendfile: On systems that support it,
# memory-mapping or the sendfile syscall is used to deliver
# files.  This usually improves server performance, but must
# be turned off when serving from networked-mounted
# filesystems or if support for these functions is otherwise
# broken on your system.
#
#EnableMMAP off
#EnableSendfile off

# Supplemental configuration
#
# The configuration files in the conf/extra/ directory can be
# included to add extra features or to modify the default configuration of
# the server, or you may simply copy their contents here and change as
# necessary.

# Server-pool management (MPM specific)
#Include conf/extra/httpd-mpm.conf

# Multi-language error messages
#Include conf/extra/httpd-multilang-errordoc.conf

# Fancy directory listings
#Include conf/extra/httpd-autoindex.conf

# Language settings
#Include conf/extra/httpd-languages.conf

# User home directories
#Include conf/extra/httpd-userdir.conf

# Real-time info on requests and configuration
#Include conf/extra/httpd-info.conf

# Virtual hosts
#Include conf/extra/httpd-vhosts.conf

# Local access to the Apache HTTP Server Manual
#Include conf/extra/httpd-manual.conf

# Distributed authoring and versioning (WebDAV)
#Include conf/extra/httpd-dav.conf

# Various default settings
#Include conf/extra/httpd-default.conf

# Secure (SSL/TLS) connections
#Include conf/extra/httpd-ssl.conf
#
# Note: The following must must be present to support
#       starting without SSL on platforms with no /dev/random equivalent
#       but a statically compiled-in mod_ssl.
#
<IfModule ssl_module>
SSLRandomSeed startup builtin
SSLRandomSeed connect builtin
</IfModule>

Offline Simosito

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Re: strani errore nell'esecuzione di file python cgi
« Risposta #6 il: Aprile 04, 2009, 17:19 »
Modificalo così:
<Directory "C:/www">
   Options Indexes FollowSymLinks MultiViews
                AllowOverride None
                Order allow,deny
                allow from all
## Python via CGI
                Options +ExecCGI
                AddHandler cgi-script .py
                ## fine
</Directory>

(Il file .htacces non ti serve più, e neanche mod_python)

Metti il seguente codice all'inizio dei tuoi file .py:
[hlpycode]
#!C:/Python25/python.exe
[/hlpycode]

(ovviamente se python è installato da un altra parte devi cambiare il percorso).

Ciao,
S~

fonte: questa pagina
« Ultima modifica: Aprile 04, 2009, 17:22 da Simosito »

Offline alduccio1983

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Re: strani errore nell'esecuzione di file python cgi
« Risposta #7 il: Aprile 04, 2009, 18:07 »
ottimo funziona!
Ho disistallato il mod_python ed ho solo apportato le modifiche da te elencate.
voleva farti solo un'altra piccola domanda ma non vorrei uscire fuori argomento.
Un file python creato in questo modo, quando dovrà essere trasferito su di un hosting, deve essere trasferito nella cartella cgi-bin? deve subitre quelche modifica nel sorgente?

Offline Simosito

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Re: strani errore nell'esecuzione di file python cgi
« Risposta #8 il: Aprile 05, 2009, 09:12 »
Allora: quando lo carichi su un host prima di tutto devi creare un file .htaccess nella root e mettere l'opzione "Options +ExecCGI".
Per quanto riguarda la prima riga del file dipende se l'host è windows o linux.
Se sarà linux  dovrai cambiare la prima riga in:
[hlpycode]
#!/usr/bin/env/ python
[/hlpycode]

Offline alduccio1983

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Re: strani errore nell'esecuzione di file python cgi
« Risposta #9 il: Aprile 05, 2009, 11:19 »
OK tutto bene quel che finisce bene, spero che questa discussione possa aiutare anche delle altre persone. Grazie simosito...grazie markon