Skip to main content

Python regex finditer

Just a revision for me, sharing with you all!
so i have problem to find multiple keywords in a text. i tried using re.search. but that wouldnt work.
as re.search only applicable if keyword found first in a group match.

so, lets go ahead!

i ran using python2.7

Example code for find keywords appearance using python re.finditer (regex)
 search_keywords = ["smart", "high", "confident", "mature"] 

 Now we join the keywords with OR operator | , it will looks something like this
 smart|high|confident|mature
search_patterns = "|".join(search_keywords)

Sample input text
text = "This is a story about a girl. Living in a secluded area in Wonderland.\n" \
       "She is small but very smart and smart, how ever she has verly low confident. Dont judge a book" \
       "by its cover.\n The way she thinks shown how mature she is."


 Now we update the pattern again with ( ) - > parenthesis
 The object is to capture the keyword as a group not individual character. it will looks like
 (smart|high|confident|mature)
search_patterns = "(%s)" % search_patterns
regex = re.compile(search_patterns)


 To find all pattern matches we need to use finditer function. because findall/search will
 only return the first match of the keyword in (smart|high|confident)
 If we use online regex parser,
 we can see that to achieve the same thing we need to apply "Global" flag. Unfortunately python
 doesnt support that.
it = regex.finditer(text, re.MULTILINE)


 To check individual match result, iterate and print m.group()
for match in it: 
    print match.group()


 When you ran, you will get this result
 smart
 smart
 confident
 mature

Try out too!, i did post the note in git. you may refer there

Comments

Popular posts from this blog

C# Serialization Tutorial Part 1 : Serialize object in file stream

Hello Peeps. Came across this topic while doing our game saving data feature. this post only cover basic serialization. basically serialization help us to convert our object into stream of bytes so that our object can be stored or transmit over in memory/file/database. before we can proceed with the serialization tutorial, we need to set the user permission to our target folder path. 1. Set the folder path to be accessible and can be override. This step is to avoid our program/apps from throwing unauthorizedaccessexception.    - for my scenario, im choosing the path of D:\SelfLearning\c#\Serialization to store my data file. Right click the target folder, select on Security tab Select on Users and give full control or modify permission to the user. 2. Now we are going to write our code. First we need to setup our folder path. 3. We going to create our file.  In this tutorial we are using FileStream type, other then FileStream, we can make use of MemoryStream i

Tutorial on Min3D framework using Android Studio

Salam peeps, UPDATES***, the model on the old link is no longer working. so i have create a github repo, where i put the source code in a project, you guys can try to clone in and run on your android studio device emulator or directly on your phone, Ive replaced the model with a cube. https://github.com/aliaramli/Min3DTutorial Previously i ve posted tutorial on min3D using eclipse IDE, i believe most of us has moved to Android Studio IDE in developing android apps? As previous tutorial shows a lot of support from readers and among hot post in my blog, i ve decided to post the same tutorial but this time using Android Studio. For those who are familiar with Eclipse/Android Studio migration they might not have problem in running this tutorial . For more detail explanation on min3D please visit this website page Ok lets get started. Step One Create a new android project in android studio. you may name it as what you like, below are how i defined my project settings.

Tutorial on min3d framework

Salam all. This time I want to share a bit, how I tried out the mid3d framework for the first time. Acknowledge that I am new to android development.   I just follow the tutorial on Mat-d website but there are certain things that I don’t understand how they actually work. Thus I want to share what I did step by step to make this example work. For explanations on coding/steps or errors please visit Mat-d website here J you ll understand more …. mat-d original tutorial load a 3d obl model with min3d for android Step one . Download min3d into your eclipse . Select File>Import>SVN>Checkout projects from SVN Next. Choose radio button : Create a new repository location Next. Enter the svn location http://min3d.googlecode.com/svn/trunk the thing that we want to check out from the svn is the min3d framework code. Step two. Download obj file  www.3dvia.com …you need to register first..it has free acc version.. and download the followin