From: geremy condra on 28 Jun 2010 16:30 On Mon, Jun 28, 2010 at 1:08 PM, Edward A. Falk <falk(a)green.rahul.net> wrote: > In article <mailman.2270.1277736664.32709.python-list(a)python.org>, > Stephen Hansen <me+list/python(a)ixokai.io> wrote: >> >>No one said otherwise, or that print was useless and never used in such >>contexts. > > I was responding to the question "Also, do you use print *that* > much? Really?" The implication being that in the majority of useful > python programs, you don't really need to use print. > > My answer is yes, I use print in 100% of the scripts I write, including > the large useful ones. > > For this reason alone, python 3 is incompatible with python 2 (which > has already been acknowledged.) > > Until such time as 100% of the systems I might ever want to run my progams > on have python 3 installed, I cannot port my programs over from python 2. Uhmm, just add the parenthesis to your old scripts. You can do that without breaking on 2.x. Geremy Condra
From: Stephen Hansen on 28 Jun 2010 16:50 On 6/28/10 1:30 PM, geremy condra wrote: > On Mon, Jun 28, 2010 at 1:08 PM, Edward A. Falk<falk(a)green.rahul.net> wrote: >> In article<mailman.2270.1277736664.32709.python-list(a)python.org>, >> Stephen Hansen<me+list/python(a)ixokai.io> wrote: >>> >>> No one said otherwise, or that print was useless and never used in such >>> contexts. >> >> I was responding to the question "Also, do you use print *that* >> much? Really?" The implication being that in the majority of useful >> python programs, you don't really need to use print. >> >> My answer is yes, I use print in 100% of the scripts I write, including >> the large useful ones. >> >> For this reason alone, python 3 is incompatible with python 2 (which >> has already been acknowledged.) >> >> Until such time as 100% of the systems I might ever want to run my progams >> on have python 3 installed, I cannot port my programs over from python 2. > > Uhmm, just add the parenthesis to your old scripts. You can > do that without breaking on 2.x. Only sort of. But in Python 2.6+, you only need to "from __future__ import print_function" to make code work in both 2.x and 3.x (at least insofar as the print situation is concerned). -- ... Stephen Hansen ... Also: Ixokai ... Mail: me+list/python (AT) ixokai (DOT) io ... Blog: http://meh.ixokai.io/
From: Grant Edwards on 28 Jun 2010 16:52 On 2010-06-28, geremy condra <debatem1(a)gmail.com> wrote: > On Mon, Jun 28, 2010 at 1:08 PM, Edward A. Falk <falk(a)green.rahul.net> wrote: >> In article <mailman.2270.1277736664.32709.python-list(a)python.org>, >> Stephen Hansen ?<me+list/python(a)ixokai.io> wrote: >>> >>>No one said otherwise, or that print was useless and never used in such >>>contexts. >> >> I was responding to the question "Also, do you use print *that* >> much? Really?" ?The implication being that in the majority of useful >> python programs, you don't really need to use print. >> >> My answer is yes, I use print in 100% of the scripts I write, including >> the large useful ones. >> >> For this reason alone, python 3 is incompatible with python 2 (which >> has already been acknowledged.) >> >> Until such time as 100% of the systems I might ever want to run my progams >> on have python 3 installed, I cannot port my programs over from python 2. > > Uhmm, just add the parenthesis to your old scripts. You can > do that without breaking on 2.x. I suppose so, for some values of "breaking". It can change the output: There is definitely a semantic difference between print "asdf", and print ("asdf",) -- Grant Edwards grant.b.edwards Yow! Those people look at exactly like Donnie and gmail.com Marie Osmond!!
From: Robert Kern on 28 Jun 2010 17:11 On 6/28/10 3:09 PM, Edward A. Falk wrote: > In article<mailman.2268.1277736080.32709.python-list(a)python.org>, > Stephen Hansen<me+list/python(a)ixokai.io> wrote: >> >> Any other use, I basically operate on a file object. > > I use file objects all the time. I use print with them. The 2to3 conversion script takes care of this for you. [~]$ 2to3 foo.py RefactoringTool: Skipping implicit fixer: buffer RefactoringTool: Skipping implicit fixer: idioms RefactoringTool: Skipping implicit fixer: set_literal RefactoringTool: Skipping implicit fixer: ws_comma --- foo.py (original) +++ foo.py (refactored) @@ -1,3 +1,3 @@ import sys -print >>sys.stderr, "Error!" +print("Error!", file=sys.stderr) RefactoringTool: Files that need to be modified: RefactoringTool: foo.py -- Robert Kern "I have come to believe that the whole world is an enigma, a harmless enigma that is made terrible by our own mad attempt to interpret it as though it had an underlying truth." -- Umberto Eco
From: geremy condra on 28 Jun 2010 17:20
On Mon, Jun 28, 2010 at 1:52 PM, Grant Edwards <invalid(a)invalid.invalid> wrote: > On 2010-06-28, geremy condra <debatem1(a)gmail.com> wrote: >> On Mon, Jun 28, 2010 at 1:08 PM, Edward A. Falk <falk(a)green.rahul.net> wrote: >>> In article <mailman.2270.1277736664.32709.python-list(a)python.org>, >>> Stephen Hansen ?<me+list/python(a)ixokai.io> wrote: >>>> >>>>No one said otherwise, or that print was useless and never used in such >>>>contexts. >>> >>> I was responding to the question "Also, do you use print *that* >>> much? Really?" ?The implication being that in the majority of useful >>> python programs, you don't really need to use print. >>> >>> My answer is yes, I use print in 100% of the scripts I write, including >>> the large useful ones. >>> >>> For this reason alone, python 3 is incompatible with python 2 (which >>> has already been acknowledged.) >>> >>> Until such time as 100% of the systems I might ever want to run my progams >>> on have python 3 installed, I cannot port my programs over from python 2. >> >> Uhmm, just add the parenthesis to your old scripts. You can >> do that without breaking on 2.x. > > I suppose so, for some values of "breaking". It can change the output: > > There is definitely a semantic difference between > > print "asdf", > > and > print ("asdf",) I was actually referring to what stephen hansen pointed out, the from __future__ import print_function. Geremy Condra |