> -----Original Message----- > From: > [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] > rg] On Behalf Of Gal Diskin > Sent: 05 October 2006 16:01 > To: python-list@python.org > Subject: building strings from variables > > Following a discussion with an associate at work about various ways to > build strings from variables in python, I'd like to hear your opinions > and preferred methods. The methods we discussed are: > 1. some_string = "cd %s ; %s %d %s %s" % ( working_dir, ssh_cmd, > some_count, some_param1, some_param2) > > 2. import string > template = string.Template("cd $dir ; $cmd $count $param1 > $param2") > some_string = template.substitute(dict(dir=working_dir, > > cmd=ssh_cmd, > > count=some_count, > > pararm1=some_param1, > > param2=some_param2)) > here you can use a couple of nice tricks by using class.__dict__ and > globals() \ locals() dictionaries. > > 3. some_string = "cd "+working_dir+" ; "+ssh_cmd+ " > "+str(some_count)+" "+some_param1+" "+some_param2 > (all these are supposed to produce the same strings) > > Which methods do you know of \ prefer \ think is better because...? > I will appreciate any opinions about the matter.
:D I think, it would depend really on what your aims are (readable code, fast string generation...), and how the vars you want to build the string from are respresented in your code (is it natural to use a dict etc..) I kicked off a conversation similar to this earlier today, and that was my conclusion after helpful debate & advice. Matt. This email is confidential and may be privileged. If you are not the intended recipient please notify the sender immediately and delete the email from your computer. You should not copy the email, use it for any purpose or disclose its contents to any other person. Please note that any views or opinions presented in this email may be personal to the author and do not necessarily represent the views or opinions of Digica. It is the responsibility of the recipient to check this email for the presence of viruses. Digica accepts no liability for any damage caused by any virus transmitted by this email. UK: Phoenix House, Colliers Way, Nottingham, NG8 6AT UK Reception Tel: + 44 (0) 115 977 1177 Support Centre: 0845 607 7070 Fax: + 44 (0) 115 977 7000 http://www.digica.com SOUTH AFRICA: Building 3, Parc du Cap, Mispel Road, Bellville, 7535, South Africa Tel: + 27 (0) 21 957 4900 Fax: + 27 (0) 21 948 3135 http://www.digica.com -- http://mail.python.org/mailman/listinfo/python-list
