473,406 Members | 2,220 Online
Bytes | Software Development & Data Engineering Community
Post Job

Home Posts Topics Members FAQ

Join Bytes to post your question to a community of 473,406 software developers and data experts.

Regular expressions using re

Python 2.5
Hi all, can anybody tell me how to say "if a jpeg file does NOT have 'gallery_' in the first bit" using the python re module. Something like this:
Expand|Select|Wrap|Line Numbers
  1. re.compile('^gallery_[^|]{1,256}.jp[e]{0,1}g$', re.I)
  2.  
The problem seems to be with the first bit "^gallery_" which is wrong, it just returns all the files that do have "gallery_" in the first bit.
Apr 3 '08 #1
1 1024
I wrote a function for you just to show a way you could do it: (I hope this answers what you were wondering about)
Expand|Select|Wrap|Line Numbers
  1. def find_match(str):
  2.     if not re.match('^gallery_[^|]{1,256}\.jpe?g', str):
  3.         print 'it did NOT match';
  4.     else:
  5.         print 'it matched';
  6.  
Apr 3 '08 #2

Sign in to post your reply or Sign up for a free account.

Similar topics

1
by: Kenneth McDonald | last post by:
I'm working on the 0.8 release of my 'rex' module, and would appreciate feedback, suggestions, and criticism as I work towards finalizing the API and feature sets. rex is a module intended to make...
11
by: Martin Robins | last post by:
I am trying to parse a string that is similar in form to an OLEDB connection string using regular expressions; in principle it is working, but certain character combinations in the string being...
2
by: Sehboo | last post by:
Hi, I have several regular expressions that I need to run against documents. Is it possible to combine several expressions in one expression in Regex object. So that it is faster, or will I...
4
by: Együd Csaba | last post by:
Hi All, I'd like to "compress" the following two filter expressions into one - assuming that it makes sense regarding query execution performance. .... where (adate LIKE "2004.01.10 __:30" or...
7
by: Billa | last post by:
Hi, I am replaceing a big string using different regular expressions (see some example at the end of the message). The problem is whenever I apply a "replace" it makes a new copy of string and I...
9
by: Pete Davis | last post by:
I'm using regular expressions to extract some data and some links from some web pages. I download the page and then I want to get a list of certain links. For building regular expressions, I use...
3
by: a | last post by:
I'm a newbie needing to use some Regular Expressions in PHP. Can I safely use the results of my tests using 'The Regex Coach' (http://www.weitz.de/regex-coach/index.html) Are the Regular...
25
by: Mike | last post by:
I have a regular expression (^(.+)(?=\s*).*\1 ) that results in matches. I would like to get what the actual regular expression is. In other words, when I apply ^(.+)(?=\s*).*\1 to " HEART...
10
by: Thomas Dybdahl Ahle | last post by:
Hi, I'm writing a program with a large data stream to which modules can connect using regular expressions. Now I'd like to not have to test all expressions every time I get a line, as most of...
13
by: Wiseman | last post by:
I'm kind of disappointed with the re regular expressions module. In particular, the lack of support for recursion ( (?R) or (?n) ) is a major drawback to me. There are so many great things that can...
0
by: emmanuelkatto | last post by:
Hi All, I am Emmanuel katto from Uganda. I want to ask what challenges you've faced while migrating a website to cloud. Please let me know. Thanks! Emmanuel
0
by: Hystou | last post by:
There are some requirements for setting up RAID: 1. The motherboard and BIOS support RAID configuration. 2. The motherboard has 2 or more available SATA protocol SSD/HDD slots (including MSATA, M.2...
0
by: Hystou | last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can...
0
Oralloy
by: Oralloy | last post by:
Hello folks, I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>". The problem is that using the GNU compilers,...
0
jinu1996
by: jinu1996 | last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven...
0
by: Hystou | last post by:
Overview: Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows...
0
tracyyun
by: tracyyun | last post by:
Dear forum friends, With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each...
0
agi2029
by: agi2029 | last post by:
Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing,...
0
isladogs
by: isladogs | last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM). In this session, we are pleased to welcome a new...

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.