Python #25-Application of Regular Expressions

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Tips : To get each character from the word use "."

Source Code :

import re

result=re.findall(r".", "I AM BIG FAN OF SACHIN")

print result

Output:

['I', ' ', 'A', 'M', ' ', 'B', 'I', 'G', ' ', 'F', 'A', 'N', ' ', 'O', 'F', ' ', 'S', 'A', 'C', 'H', 'I', 'N']

Note Worthy : If you notice the output space is also present, in order to remove use "\w" instead of ".".

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Tips : To get each character from the word use "\w" without space " " in output.

Source Code : 

import re

result=re.findall(r"\w", "I AM A BIG FAN OF SACHIN")

print result

Output:

['I', 'A', 'M', 'A', 'B', 'I', 'G', 'F', 'A', 'N', 'O', 'F', 'S', 'A', 'C', 'H', 'I', 'N']

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Tips :  To get each word use "*" or "+"

Source Code :

import re

result=re.findall(r"\w*", "I AM A BIG FAN OF SACHIN")

print result

Output:

['I', '', 'AM', '', 'A', '', 'BIG', '', 'FAN', '', 'OF', '', 'SACHIN', '']

Note Worthy : Again, it is returning space as a word because "*" returns zero or more matches of pattern to its left. Now to remove spaces we will go with "+".

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Source Code :

import re

result=re.findall(r"\w+", "I AM A BIG FAN OF SACHIN")

print result

Output:

['I', 'AM', 'A', 'BIG', 'FAN', 'OF', 'SACHIN']

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NEED TO COMPILER TO CHECK CLICK ME 

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Tips: To get each word use "^"

Source Code :

import re

result=re.findall(r"^\w+", "I LOVE TO CODE")

print result

Output:

['I']

Note Worthy : If we will use "$" instead of "^", it will return the word from the end of the string. Let’s look at it.

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Source Code :

import re

result=re.findall(r"\w+$", "I LOVE TO CODE")

print result

Output :

['CODE']

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NEED TO COMPILER TO CHECK CLICK ME 

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Credits : Analytics Vidhya

Regex in Python : 

• Python #21-Regular Expression In python 
• Python #22-Regex match() and search() in python
• Python #23-Regex findall() and sub() in python

Thanks and regards,

Tech Bird