472,374 Members | 1,017 Online
Bytes | Software Development & Data Engineering Community
Post Job

Home Posts Topics Members FAQ

Join Bytes to post your question to a community of 472,374 software developers and data experts.

What does the -O flag do?

http://rgruet.free.fr/PQR25/PQR2.5.html says

"Optimize generated bytecode (also PYTHONOPTIMIZE=x). Asserts are
suppressed."

Is removing asserts all it does, where can I find more details? I'm
guessing it's not very useful as I hardly ever see it mentioned.

Jan 9 '07 #1
1 3569
Sard schrieb:
"Optimize generated bytecode (also PYTHONOPTIMIZE=x). Asserts are
suppressed."

Is removing asserts all it does, where can I find more details? I'm
guessing it's not very useful as I hardly ever see it mentioned.
It somewhat depends on the Python version. To find out precisely what
it does, search the source code for Py_OptimizeFlag. In 2.5, it

- causes the interpreter to load .pyo files, not .pyc files
(in .zip files, just makes .pyo preferred over .pyc)
- causes __debug__ to have a value of 0
- ignores assert statements in source code
- treats __debug__ statically as being 0
- causes the byte code generator to save .pyo files, not .pyc

HTH,
Martin
Jan 9 '07 #2

This thread has been closed and replies have been disabled. Please start a new discussion.

Similar topics

92
by: Reed L. O'Brien | last post by:
I see rotor was removed for 2.4 and the docs say use an AES module provided separately... Is there a standard module that works alike or an AES module that works alike but with better encryption?...
6
by: Niklaus | last post by:
Hi, Can someone point out what is wrong with this code ? How can i make it better optimize it. When run it gives me seg fault in linux. But windows it works fine(runs for a long time). Do we...
8
by: xanthviper | last post by:
Hey, I'm trying to do what I think is pretty basic here, but I am missing something. Hopefully someone can point me in the right direction. Essentially I have an enumeration set up as the...
2
by: Martin Høst Normark | last post by:
Hi everyone Has anyone got the least experience in integrating the Digital Signature with an ASP.NET Web Application? Here in Denmark, as I supose in many other countries, they're promoting...
10
by: dgk | last post by:
I'm searching for a way to determine if control values have changed. For some it's easy, such as TextBox.Modified. But looking at the radiobutton I come across IsMirrored. Curious, I look to the...
39
by: windandwaves | last post by:
Hi Folk I have to store up to eight boolean bits of information about an item in my database. e.g. with restaurant drive-through facility yellow windows
4
by: amit | last post by:
Hi guys!I am trying to write a program which will segregate some selected keywords from a given file.The source code is given alongwith #include<stdio.h> #include<string.h> char...
98
by: tjb | last post by:
I often see code like this: /// <summary> /// Removes a node. /// </summary> /// <param name="node">The node to remove.</param> public void RemoveNode(Node node) { <...> }
1
by: Gary Wessle | last post by:
Hi in the example code below, if function A or B throw, and I deal with it by setting flag to 0, does the code re-execute from the start of the try line or it resumes from the function that...
4
codemama
by: codemama | last post by:
I have created xml files in C# using the DataSet ds.WriteXml method. I now need to take an xml file and be able to do an insert or delete to a table in MS Access. How would I go about that? Do...
2
by: Kemmylinns12 | last post by:
Blockchain technology has emerged as a transformative force in the business world, offering unprecedented opportunities for innovation and efficiency. While initially associated with cryptocurrencies...
0
by: Naresh1 | last post by:
What is WebLogic Admin Training? WebLogic Admin Training is a specialized program designed to equip individuals with the skills and knowledge required to effectively administer and manage Oracle...
0
by: antdb | last post by:
Ⅰ. Advantage of AntDB: hyper-convergence + streaming processing engine In the overall architecture, a new "hyper-convergence" concept was proposed, which integrated multiple engines and...
0
hi
by: WisdomUfot | last post by:
It's an interesting question you've got about how Gmail hides the HTTP referrer when a link in an email is clicked. While I don't have the specific technical details, Gmail likely implements measures...
0
by: Carina712 | last post by:
Setting background colors for Excel documents can help to improve the visual appeal of the document and make it easier to read and understand. Background colors can be used to highlight important...
0
BLUEPANDA
by: BLUEPANDA | last post by:
At BluePanda Dev, we're passionate about building high-quality software and sharing our knowledge with the community. That's why we've created a SaaS starter kit that's not only easy to use but also...
1
by: Johno34 | last post by:
I have this click event on my form. It speaks to a Datasheet Subform Private Sub Command260_Click() Dim r As DAO.Recordset Set r = Form_frmABCD.Form.RecordsetClone r.MoveFirst Do If...
0
by: jack2019x | last post by:
hello, Is there code or static lib for hook swapchain present? I wanna hook dxgi swapchain present for dx11 and dx9.
0
by: F22F35 | last post by:
I am a newbie to Access (most programming for that matter). I need help in creating an Access database that keeps the history of each user in a database. For example, a user might have lesson 1 sent...

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.