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If you try something like this in python: a = os.system("find / -name myfile.ext") print a   # the output for find will be printed, but ‘a’ will store the exit code of the find command So, how do you save the output of os.system to a variable? Use the subprocess module and proceed like: [...]

Some time ago I posted some cds invenio mysql useful queries. Some people wrote some days ago asking wether I could put this into a function. Here you are List all deleted records which belong(ed) to collection ‘colname’ (tested with Invenio 0.99.x) def listDeletedFromCollname(colname, coltag=’980__c’): from invenio.dbquery import run_sql query = """ SELECT distinct bibrec_bib98x.id_bibrec [...]

I learned a python trick that saved me a lot of time when using the interpreter. Just wanted to share it with you. >>> import rlcompleter, readline >>> readline.parse_and_bind("tab:complete") With the above lines you’ll have a unix-like autocomplete for functions. For instance, if you type >>> import os >>> os. And then you press “TAB” [...]

A friend of mine asked yesterday: how do I get the mod_python version that my site is running? Answer is quite easy! >>> import mod_python >>> print mod_python.version 3.3.1

If you are getting a message like this: >>> import cx_Oracle Traceback (most recent call last): File "<stdin>", line 1, in ? ImportError: libclntsh.so.11.1: wrong ELF class: ELFCLASS32 It means you are having issues with ELF (Executable and Linkable Format) How to solve em? First, locate the path to libclntsh.so.11.1 (usually in /usr): [root@zaguan importaFHdesdeRoble]# [...]

Es muy probable que si programas en python te encuentres, alguna vez, con una situación en la que debes eliminar las tildes de algún texto. Esto se puede hacer fácilmente utilizando el módulo unicodedata. He creado la funcion elimina_tildes tal que asi: 1 2 3 4 5 6 7 import unicodedata def elimina_tildes(s): return ”.join((c [...]

A few days ago I had to install MySQLdb. The installation is quite simple: # tar -xzvf MySQL-python-1.2.2.tar.gz # cd MySQL-python-1.2.2 # python setup.py build # python setup.py install But then I checked a page which had to use this python module (MySQLdb) and… oops, it did not work: Can’t extract file(s) to egg cache [...]

A modo de chuleta, una vez más, os pongo los pasos necesarios para trabajar con Eclipse, EGit y PyDev. 1. Instalar Eclipse Classic. 2. Iniciar Eclipse, y deberías ver una pantalla similar a: 3. Instalar PyDev desde Eclipse. Para ello, en la pantalla anterior, pulsa sobre la flecha de la derecha. Aparecerá una pantalla de [...]

This is a usual question in python forums. How (the hell!) do I check my variable’s type? I am NOT a python-pro, but I have to deal with this language very often, as CDS Invenio is coded using python. Well, I was changing a function and wanted to check the type of a variable… First [...]

Yesterday I looked at /var/log/httpd/error_log and observed a [notice] mod_python: (Re)importing module ‘mod_python.publisher’ was filling apache error_log file. Tibor (from CDS Support Team) told me this was a harmless notice I could safely ignore. I wanted to get rid of it because it fills logs, so I decided to upgrade my mod_python to last version [...]