How To Let People Know You're A Bad Python Programmer

Post by grunt » Fri, Aug 28, 2009, 5:56 PM UTC

jmillikin wrote: post #17

grunt wrote: post #14

Call Perl from Python This is an oldie but a goodie, but a lot of bad programmers don't realize they can make their Python code even worse, if they embed a bunch of untested, legacy, Perl code in it. There is a Perl/Python module that makes this a snap. Yes, throw in a Perl slight for good measure. A surer way of endearing yourself to your fellow Pythonistas , I know of not. This is not unlike what happens on reddit.…

Perl, that miserable little unwanted orphan of a language, has real anonymous, first-class functions complete with closures. Python, sadly, does not Which Python are you talking about? The language I use has had closures and first-class functions for years.

Post by erlanger » Fri, Aug 28, 2009, 6:18 PM UTC

blasdel wrote: post #16

grunt wrote: post #14

Call Perl from Python This is an oldie but a goodie, but a lot of bad programmers don't realize they can make their Python code even worse, if they embed a bunch of untested, legacy, Perl code in it. There is a Perl/Python module that makes this a snap. Yes, throw in a Perl slight for good measure. A surer way of endearing yourself to your fellow Pythonistas , I know of not. This is not unlike what happens on reddit.…

I agree wholeheartedly with the first half of your comment, but the second half is the same uninformed dogma you rail against in the first! Python is not really a functional programming language -- it has statements and suites, neither of which are first-class. lambda is implemented as an inline (suite-less) value-returning statement (like the ternary statement) because dealing with indentation would be a bitch. Sinc…

  def name_printer(name):
      def printer():
          print(name)
      return printer

  erlanger_printer = name_printer('erlanger')

Post by arohner » Fri, Aug 28, 2009, 6:54 PM UTC

abstractbill wrote: post #21

jmillikin wrote: post #17

Earlier quoted context omitted.

Perl, that miserable little unwanted orphan of a language, has real anonymous, first-class functions complete with closures. Python, sadly, does not Which Python are you talking about? The language I use has had closures and first-class functions for years.

They don't seem to work very well: >>> def foo(): ... blah = 42 ... def wibble(): ... print "blah is " + blah ... wibble() ... >>> foo() blah is 42 Great! Looks like we have real closures! >>> def foo(): ... blah = 42 ... def wibble(): ... blah += 1 ... wibble() ... print "blah is " + blah ... >>> foo() Traceback (most recent call last): File " ", line 1, in File " ", line 5, in foo File " ", line 4, in wibble Unboun…

Post by ubernostrum » Fri, Aug 28, 2009, 7:00 PM UTC

grunt wrote: post #22

jmillikin wrote: post #17

Earlier quoted context omitted.

Perl, that miserable little unwanted orphan of a language, has real anonymous, first-class functions complete with closures. Python, sadly, does not Which Python are you talking about? The language I use has had closures and first-class functions for years.

Only since Python 3000, with the addition of the "nonlocal" declaration, can python claim to have closures. And yes, Python does also have "first-class functions"--in the same way that C has first-class functions. It's the "anonymous" part that it has difficulty with.

Post by [deleted] » Fri, Aug 28, 2009, 7:09 PM UTC

ubernostrum wrote: post #29

alec wrote: post #18

> Brag that you called Perl from Python because it was "quicker" to experienced Python programmers. A coworker found that calling out to grep can be faster than using Python's regular expressions for large amounts of text processing. My first reaction was to cringe, but it was indeed much faster for this particular problem; I think I was the bad programmer for reflexively cringing instead of saying "nice performance…

There are times and cases where a Perl script is faster than grep. It's ridiculously heavily optimized for that particular task.