Python versus C++ Speed

[Sparohok]

What do you mean by speed?

Choice of language is dictated by the relative cost of execution time versus development & maintainence time.

If you're writing code used by millions of people, or if a microsecond can cost you thousands of dollars, by all means write C code.

If you're like me and you write code for your own use, and you spend a lot more time writing your code than you spend running it, Python so much faster than C it's not even funny.

It all depends.

Martin

 

[nononsense]

Quote from Sparohok:

What do you mean by speed?

Choice of language is dictated by the relative cost of execution time versus development & maintainence time.

If you're writing code used by millions of people, or if a microsecond can cost you thousands of dollars, by all means write C code.

If you're like me and you write code for your own use, and you spend a lot more time writing your code than you spend running it, Python so much faster than C it's not even funny.

It all depends.

Martin

Python so much faster than C it's not even funny
Who said this?
Ya didn't look at the reference cited:
http://amath.colorado.edu/faculty/fperez/talks/0204_python-c.pdf
Come back after you did and know what you're talking about.

 

[prt_systems]

Quote from nononsense:

...In passsing, quickly on GUI's:
Looking further into something like matplotlab also will show you the unbelievable cross-platform ability to relate to any GUI, wx, gtk, qt, glade, tk.
As to IDE's under/for Python, quite some choice, even for Jython if you have to.
)

matplotlib is a good free plotting package for simple 2D graphics......

 

[science_trader]

Quote from nononsense:

Python versus C++ Speed
As a lot has been said about these lately, I thought this url pointer might be useful:
http://amath.colorado.edu/faculty/fperez/talks/0204_python-c.pdf

also (scipy-weave):
http://www.scipy.org/documentation/weave/

nononsense

...and a presentation written in Latex using the beamer class. I love it...

 

[ktmexc20]

Quote from prt_systems:

matplotlib is a good free plotting package for simple 2D graphics......

I might say quite "simple" in interface and vast in implementation... Remember that matplotlib is a front-end to a large variety of back-ends as nonon was suggesting. This includes complete gui libraries also vector graphics (cairo, etc.) and imaging capabilities, not to mention it inherits the matlab like package "Scipy" (More correctly it's Numpy, the new replacement of Numeric and Numarray ) for mathematical / Nd array functionality.

screenshots

 

[ktmexc20]

While I'm thinking about it, what's recommended for 2d plotting and/or gui libs through a straight "C" API?

 

[prt_systems]

Quote from ktmexc20:

I might say quite "simple" in interface and vast in implementation... Remember that matplotlib is a front-end to a large variety of back-ends as nonon was suggesting. This includes complete gui libraries also vector graphics (cairo, etc.) and imaging capabilities, not to mention it inherits the matlab like package "Scipy" (More correctly it's Numpy, the new replacement of Numeric and Numarray ) for mathematical / Nd array functionality.

screenshots

Well yes ..... but if your visualization needs are demanding you will spend a lot of time and effort with these - it might make sense depending upon circumstances - whereas other specialized tools might be able to handle things in one line of code.....

Again, in general I will use these if I can .... certainly if I had extremely demanding visualization needs then I might turn to these as a portion of a custom solution .... but for moderately demaning applications I might even use a tool which requires a fee .....

 

[nononsense]

Quote from prt_systems:

Well yes ..... but if your visualization needs are demanding you will spend a lot of time and effort with these - it might make sense depending upon circumstances - whereas other specialized tools might be able to handle things in one line of code.....

Again, in general I will use these if I can .... certainly if I had extremely demanding visualization needs then I might turn to these as a portion of a custom solution .... but for moderately demaning applications I might even use a tool which requires a fee .....

If you need more as 3D, you can use gnuplot - (gplt in scipy).
Further there is MayaVi py-based (uses VTK). Hard to imagine anything "demanding" that couldn't be handled by these. You can see some examples in the url posted earlier.

 

[Sparohok]

Quote from nononsense:

Ya didn't look at the reference cited:

Yes, I read it, it is a competent overview.

You, however, did not even read my post.

Read again. Read for comprehension, not just looking for something to disagree with. Then tell me whether you still think I'm wrong and why, and we can have a discussion.

Martin

 

[nononsense]

Quote from Sparohok:

Yes, I read it, it is a competent overview.

You, however, did not even read my post.

Read again. Read for comprehension, not just looking for something to disagree with. Then tell me whether you still think I'm wrong and why, and we can have a discussion.

Martin

Sorry if I misread you Martin.
For an ordinary guy like me, you could have said it in a more straightforward way. Your "and you spend a lot more time writing your code than you spend running it" kind of threw me of and I'm still not sure what it means in this context.