[Hindi]NLP 06# Regular Expressions |NLP|Python 3|Natural Language Processing|2019

[Hindi]NLP 06# Regular Expressions |NLP|Python 3|Natural Language Processing|2019

Code:

# -*- coding: utf-8 -*-

"""NLP_Ex5.ipynb

Automatically generated by Colaboratory.

"""

text = "My phone number is 111-222-3333, call me soon!!!"

text

'phone' in text

'111-222-3333' in text

import re

pattern = 'phone'

re.search(pattern,text)

match = re.search(pattern,text)

match.span()

match.start()

match.end()

text = "My phone is a bran new phone"

match = re.search(pattern,text)

match

match.span()

all_match = re.findall("phone",text)

len(all_match)

for match in re.findall('phone',text):

  print(match)

text = "My phone number is 666-555-8888"

pattern = r'\d\d\d-\d\d\d-\d\d\d\d'

ph = re.search(pattern,text)

ph

ph.group()

pattern = r'(\d{3})-(\d{3})-(\d{4})'

match = re.search(pattern,text)

match.group(3)

re.search(r"man|woman","This woman is my best friend")

re.findall(r".man","This man & woman are my best friends")

re.findall(r"\d$","THis ends with a number 3")

re.findall(r"^\d","8 is my fav. number")

phrase = "THere are 3 numbers 34 inside 5 this sentence"

re.findall(r"[^\d]+",phrase)

phrase2 = "This is a string! but it has puncuation. How to remove it?"

mylist = re.findall(r"[^!.? ]+",phrase2)

mylist

' '.join(mylist)

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