CODEWITHSUNDEEP
pythonregexpattern-matchingartificial-intelligence
Thom
Thom

Reputation: 621

Python: Reggular Expressions filtering for Self Learning program

I am making a program that has a small way of self learning, but now I want to get "information" from the output like:

>>>#ff0000 is the hexcode for the color red

I want to filter with reggular expressions that the user filled this sentence is the hexcode for the color, and that I retrieve the name of the color and the hexcode. I have put a small code below how I want to works:

#main.py

strInput = raw_input("Please give a fact:")

if "{0} is the hexcode for the color {1}" in strInput:
    #  {0} is the name of the color
    #  {1} is the hexcode of the color
    print "You give me an color"

if "{0} is an vehicle" in strInput:
    #  {0} is an vehicle
    print "You give me an vehicle"

Is this possible with reggular expressions, and what is the best way to do it with reggular expressions?

Upvotes: 0

Views: 34

Answers (1)

wildwilhelm
wildwilhelm

Reputation: 5019

You can read about regular expressions in Python in the standard library documentation. Here, I'm using named groups to store the matched value into a dictionary structure with a key that you choose.

>>> import re
>>> s = '#ff0000 is the hexcode for the color red'
>>> m = re.match(r'(?P<hexcode>.+) is the hexcode for the color (?P<color>.+)', s)
>>> m.groupdict()
{'color': 'red', 'hexcode': '#ff0000'}

Note that if there's no match using your regular expression, the m object here will be None.

Upvotes: 2

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