regex to find word that starts with c and ends with o

Question

I am trying to write some code to find sentence that has any word that has a letter c followed by a another letter and ends in o. e.g. cxo, ceo, cfo Aplogies should have mentioned that it can only have one letter in the middle of c and o

I've tried

("c.o")

but this does not seem to work. Please give me some help on where I am going wrong

Some examples.

["chrome", "commo", "cron"] - These should not show

["cxo", "cfo", "coo", "cho"] - These should show

Can you add the code to the question that did not work so readers have more context. — The fourth bird, Jul 13 '22 at 10:03
Example input strings and expected matches would be helpful in giving an exact regex for your needs. — mitch_, Jul 13 '22 at 10:10

mitch_ · Accepted Answer · 2022-07-13T10:18:47.980

1

If your goal is to find any 3-letter word starting with C and ending with O, you can insert a word boundary \b before and after your match like so: /\bc\wo\b/. The presence of \b will prevent partial matches like echo from matching your regex, but will still allow for matches to occur at the beginning and end of your match string.

As an example with python:

import re
r = re.compile(r"\bc\wo\b")
print(r.search("at the end a ceo"))       # => match
print(r.search("ceo at the start"))       # => match
print(r.search("in the middle a ceo is")) # => match
print(r.search("fooceobar"))              # => no match

edited Jul 13 '22 at 10:18

answered Jul 13 '22 at 10:07

mitch_

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This doesnt seem to work when I tested it some how – user3234242 Jul 13 '22 at 10:15
Updated answer with Python example to demonstrate what cases it is aiming to match – mitch_ Jul 13 '22 at 10:19
This also matches c[0-9]o . – Jonathan Ciapetti Jul 13 '22 at 10:21

bpfrd · Answer 2 · 2022-07-13T10:07:47.483

0

a quick solution:

import re
re.findall('o\wc', your_string)

edited Jul 13 '22 at 10:07

answered Jul 13 '22 at 10:04

bpfrd

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Thansk for this. This is good but we only want one letter to be allowed in the middle – user3234242 Jul 13 '22 at 10:05

Nils · Answer 3 · 2022-07-13T10:51:20.533

0

\.*c.o <- starts with c has an Char in between and ends with o

edited Jul 13 '22 at 10:51

answered Jul 13 '22 at 10:07

Nils

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regex to find word that starts with c and ends with o

3 Answers3