On 01/05/2013 01:49 PM, Jan Riechers wrote:
On 05.01.2013 03:11, someone wrote: But about the regular expressions (a bit deeper look into that): Like said of Chris:[a-z] defines a "catching group", in this case all ascii lowercase letters ranging from "a" to "z". If noting else is provided, the rule matches one letter if there is no range defined by something like: {} -> Target a range of a match/hit There are also a ? -> Lazy match * -> Gready match [A-Z][0-9]{1,3} means translated: Look for any uppercase letter in ascii(!) (not "öäü" or similiar) ranging from "A" to "Z". Now look for any digit (2nd catching group) with the addition to satisfy the rule ONLY if there are at least 1 to 3 digits found. Note: If there are 4 or more digits - the catching rule is still satisfied and will provide a match/hit.
Ok, thanks a lot for the elaboration... I think I need to work with it myself at some time to be sure of understanding it...
If there is a follow up group, the next evaluation is gone through if present and so forth. If the expression is satisfied, the match is returned. The lazy "?" and greedy "*" matches try to satisfy, as the naming implies, to match as less or as much of what you have asked for. For example the regular expression is valid: 0* -> Look for a zero, and be greedy as of how many zeros you want match which might follow. Regular expressions don't have to include catching groups in order to work. But when you use them yourself somehow, its quite simple I think. I guess you are anyhow busy mangling with pyLint, PEP-Standards and pyOpenGL - so good luck with that :)
You're right - I'm a bit "overbooked" at the moment - but thanks a lot for clarifyring this with the regexps :-)
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