compile() in python

compile():

• A function belongs to “re” module.
• It is used to construct the “pattern object”.
• When we use a pattern repeatedly to extract the data, it is recommended to construct the pattern object using compile().

import re
line = "Python and R"

r1 = re.match(r'and' , line)
print("Match :",r1)

r2 = re.search(r'and' , line)
print("Search :",r2)

r3 = re.split(r'and' , line)
print("split :",r3)

• In the above example, we use ‘and’ pattern repeatedly.
• We construct the pattern object using compile() as follows.

import re
line = "Python and R"
pattern = re.compile('and')

r1 = pattern.match(line)
print("Match :",r1)

r2 = pattern.search(line)
print("Search :",r2)

r3 = pattern.split(line)
print("split :",r3)