Tutorial 11 - how does the .matches() method work?

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Tutorial 11 - how does the .matches() method work?

edited Jul 8, 2020

How does the .matches() method below work? What specifically do all of the symbols mean?

not_lp_name = ~Fundamentals.standard_name.latest.matches('.* L[. ]?P.?$')

1 response

'.' - this is for find matches on multiple lines '*' - matching on repetitions e.g., in this case, LP or LPP will be a match for LP 'L' - this is the first part we are looking for '[.]' - this is for matching the '.' symbol '?' - this is for the preceding characters, 'L' and '.', the '?' allows for matching of 'L' or 'L.', think of It as and or '$' - signifies the match needs to be the only thing at the end, so L.P. or LP (and the other variations via '?') but nothing else can come after

Source: https://docs.python.org/3.5/library/re.html#re.DOTALL
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The material on this website is provided for informational purposes only and does not constitute an offer to sell, a solicitation to buy, or a recommendation or endorsement for any security or strategy, nor does it constitute an offer to provide investment advisory services by Quantopian.

In addition, the material offers no opinion with respect to the suitability of any security or specific investment. No information contained herein should be regarded as a suggestion to engage in or refrain from any investment-related course of action as none of Quantopian nor any of its affiliates is undertaking to provide investment advice, act as an adviser to any plan or entity subject to the Employee Retirement Income Security Act of 1974, as amended, individual retirement account or individual retirement annuity, or give advice in a fiduciary capacity with respect to the materials presented herein. If you are an individual retirement or other investor, contact your financial advisor or other fiduciary unrelated to Quantopian about whether any given investment idea, strategy, product or service described herein may be appropriate for your circumstances. All investments involve risk, including loss of principal. Quantopian makes no guarantees as to the accuracy or completeness of the views expressed in the website. The views are subject to change, and may have become unreliable for various reasons, including changes in market conditions or economic circumstances.