writing understandable regular expressions

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String Handling example from a Well House Consultants training course
More on String Handling [link]

This example is described in the following article(s):
• Object oriented or structured - a comparison in Python. Also writing clean regular expressions - [link]

Source code: rexy Module: Y108

# writing understandable regular expressions

import re

inny = r'([A-Z]{1,2}\d+)'
outy = r'(\d[A-Z]{2})'
gap = r'\s+'

pcreg = re.compile(inny + gap + outy)
space = re.compile(gap)

where = "I am at CB4 5RF today and SN12 7NY on Friday"

gotten = pcreg.findall(where)
if gotten:
        print("yay")
        print(gotten)
else:
        print("nah")

print(where.split(" "))
print(space.split(where))

""" Sample Output

WomanWithCat:y108 grahamellis$ python2 rexy
yay
[('CB4', '5RF'), ('SN12', '7NY')]
['I', 'am', '', '', '', 'at', 'CB4', '5RF', '', '', '', 'today', 'and', 'SN12', '7NY', 'on', 'Friday']
['I', 'am', 'at', 'CB4', '5RF', 'today', 'and', 'SN12', '7NY', 'on', 'Friday']
WomanWithCat:y108 grahamellis$ python3 rexy
yay
[('CB4', '5RF'), ('SN12', '7NY')]
['I', 'am', '', '', '', 'at', 'CB4', '5RF', '', '', '', 'today', 'and', 'SN12', '7NY', 'on', 'Friday']
['I', 'am', 'at', 'CB4', '5RF', 'today', 'and', 'SN12', '7NY', 'on', 'Friday']
WomanWithCat:y108 grahamellis$

"""

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