Python - Constrained Search





Many times, after we get the result of a search we need to search one level deeper into part of the existing search result. For example, in a given body of text we aim to get the web addresses and also extract the different parts of the web address like the protocol, domain name etc. In such scenario we need to take help of group function which is used to divide the search result into various groups bases on the regular expression assigned. We create such group expression by separating the main search result using parentheses around the searchable part excluding the fixed words we want match.

import re
text = "The web address is https://www.tutorialspoint.com"

# Taking "://" and "." to separate the groups 
result = re.search('([\w.-]+)://([\w.-]+)\.([\w.-]+)', text)
if result :
    print "The main web Address: ",result.group()
    print "The protocol: ",result.group(1)
    print "The doman name: ",result.group(2) 
    print "The TLD: ",result.group(3) 

When we run the above program, we get the following output −

The main web Address:  https://www.tutorialspoint.com
The protocol:  https
The doman name:  www.tutorialspoint
The TLD:  com


Frequently Asked Questions

+
Ans: Python Text Processing Tutorial for Beginners - Learn Python Text Processing in simple and easy steps starting from basic to advanced concepts with examples including Text Processing,Text Processing Environment,String Immutability,Sorting Lines,Reformatting Paragraphs,Counting Token in Paragraphs ,Convert Binary to ASCII,Convert ASCII to Binary,Strings as Files,Backward File Reading,Filter Duplicate Words,Extract Emails from Text,Extract URL from Text,Pretty Print Numbers,Text Processing State Machine,Capitalize and Translate,Tokenization,Remove Stopwords,Synonyms and Antonyms,Text Translation,Word Replacement,Spelling Check,WordNet Interface,Corpora Access,Tagging Words,Chunks and Chinks,Chunk Classification,Text Classification,Bigrams,Process PDF,Process Word Document,Reading RSS feed,Sentiment Analysis,Search and Match,Text Munging,Text wrapping,Frequency Distribution,Text Summarization,Stemming Algorithms,Constrained Search. view more..
+
Ans: Python Text Processing Tutorial for Beginners - Learn Python Text Processing in simple and easy steps starting from basic to advanced concepts with examples including Text Processing,Text Processing Environment,String Immutability,Sorting Lines,Reformatting Paragraphs,Counting Token in Paragraphs ,Convert Binary to ASCII,Convert ASCII to Binary,Strings as Files,Backward File Reading,Filter Duplicate Words,Extract Emails from Text,Extract URL from Text,Pretty Print Numbers,Text Processing State Machine,Capitalize and Translate,Tokenization,Remove Stopwords,Synonyms and Antonyms,Text Translation,Word Replacement,Spelling Check,WordNet Interface,Corpora Access,Tagging Words,Chunks and Chinks,Chunk Classification,Text Classification,Bigrams,Process PDF,Process Word Document,Reading RSS feed,Sentiment Analysis,Search and Match,Text Munging,Text wrapping,Frequency Distribution,Text Summarization,Stemming Algorithms,Constrained Search. view more..
+
Ans: Python Text Processing Tutorial for Beginners - Learn Python Text Processing in simple and easy steps starting from basic to advanced concepts with examples including Text Processing,Text Processing Environment,String Immutability,Sorting Lines,Reformatting Paragraphs,Counting Token in Paragraphs ,Convert Binary to ASCII,Convert ASCII to Binary,Strings as Files,Backward File Reading,Filter Duplicate Words,Extract Emails from Text,Extract URL from Text,Pretty Print Numbers,Text Processing State Machine,Capitalize and Translate,Tokenization,Remove Stopwords,Synonyms and Antonyms,Text Translation,Word Replacement,Spelling Check,WordNet Interface,Corpora Access,Tagging Words,Chunks and Chinks,Chunk Classification,Text Classification,Bigrams,Process PDF,Process Word Document,Reading RSS feed,Sentiment Analysis,Search and Match,Text Munging,Text wrapping,Frequency Distribution,Text Summarization,Stemming Algorithms,Constrained Search. view more..
+
Ans: Python Text Processing Tutorial for Beginners - Learn Python Text Processing in simple and easy steps starting from basic to advanced concepts with examples including Text Processing,Text Processing Environment,String Immutability,Sorting Lines,Reformatting Paragraphs,Counting Token in Paragraphs ,Convert Binary to ASCII,Convert ASCII to Binary,Strings as Files,Backward File Reading,Filter Duplicate Words,Extract Emails from Text,Extract URL from Text,Pretty Print Numbers,Text Processing State Machine,Capitalize and Translate,Tokenization,Remove Stopwords,Synonyms and Antonyms,Text Translation,Word Replacement,Spelling Check,WordNet Interface,Corpora Access,Tagging Words,Chunks and Chinks,Chunk Classification,Text Classification,Bigrams,Process PDF,Process Word Document,Reading RSS feed,Sentiment Analysis,Search and Match,Text Munging,Text wrapping,Frequency Distribution,Text Summarization,Stemming Algorithms,Constrained Search. view more..
+
Ans: Python Tutorial for Beginners - Learn Python in simple and easy steps starting from basic to advanced concepts with examples including Python Syntax Object Oriented Language, Methods, Tuples, Tools/Utilities, Exceptions Handling, Sockets, GUI, Extentions, XML Programming. view more..
+
Ans: Python Overview - Learn Python in simple and easy steps starting from basic to advanced concepts with examples including Python Syntax Object Oriented Language, Methods, Tuples, Tools/Utilities, Exceptions Handling, Sockets, GUI, Extentions, XML Programming. view more..
+
Ans: Python Environment Setup - Learn Python in simple and easy steps starting from basic to advanced concepts with examples including Python 3 Syntax Object Oriented Language, Methods, Tuples, Tools/Utilities, Exceptions Handling, Sockets, GUI, Extentions, XML Programming. view more..
+
Ans: Python Basic Syntax - Learn Python in simple and easy steps starting from basic to advanced concepts with examples including Python Syntax Object Oriented Language, Methods, Tuples, Tools/Utilities, Exceptions Handling, Sockets, GUI, Extentions, XML Programming. view more..
+
Ans: Python Variable Types - Learn Python in simple and easy steps starting from basic to advanced concepts with examples including Python Syntax Object Oriented Language, Methods, Tuples, Tools/Utilities, Exceptions Handling, Sockets, GUI, Extentions, XML Programming. view more..
+
Ans: Python Basic Operators - Learn Python in simple and easy steps starting from basic to advanced concepts with examples including Python Syntax Object Oriented Language, Methods, Tuples, Tools/Utilities, Exceptions Handling, Sockets, GUI, Extentions, XML Programming. view more..
+
Ans: Python Decision Making - Learn Python in simple and easy steps starting from basic to advanced concepts with examples including Python Syntax Object Oriented Language, Methods, Tuples, Tools/Utilities, Exceptions Handling, Sockets, GUI, Extentions, XML Programming. view more..
+
Ans: Python Loops - Learn Python in simple and easy steps starting from basic to advanced concepts with examples including Python Syntax Object Oriented Language, Methods, Tuples, Tools/Utilities, Exceptions Handling, Sockets, GUI, Extentions, XML Programming. view more..
+
Ans: Python Numbers - Learn Python in simple and easy steps starting from basic to advanced concepts with examples including Python Syntax Object Oriented Language, Methods, Tuples, Tools/Utilities, Exceptions Handling, Sockets, GUI, Extentions, XML Programming. view more..
+
Ans: Python Strings - Learn Python in simple and easy steps starting from basic to advanced concepts with examples including Python Syntax Object Oriented Language, Methods, Tuples, Tools/Utilities, Exceptions Handling, Sockets, GUI, Extentions, XML Programming. view more..
+
Ans: Python Lists - Learn Python in simple and easy steps starting from basic to advanced concepts with examples including Python Syntax Object Oriented Language, Methods, Tuples, Tools/Utilities, Exceptions Handling, Sockets, GUI, Extentions, XML Programming. view more..
+
Ans: Python Tuples - Learn Python in simple and easy steps starting from basic to advanced concepts with examples including Python Syntax Object Oriented Language, Methods, Tuples, Tools/Utilities, Exceptions Handling, Sockets, GUI, Extentions, XML Programming. view more..
+
Ans: Python Dictionary - Learn Python in simple and easy steps starting from basic to advanced concepts with examples including Python Syntax Object Oriented Language, Methods, Tuples, Tools/Utilities, Exceptions Handling, Sockets, GUI, Extentions, XML Programming. view more..
+
Ans: Python Date and Time - Learn Python in simple and easy steps starting from basic to advanced concepts with examples including Python Syntax Object Oriented Language, Methods, Tuples, Tools/Utilities, Exceptions Handling, Sockets, GUI, Extentions, XML Programming. view more..




Rating - NAN/5
519 views

Advertisements