如何找到不包含特定單詞的所有行？

Question

在我的情況下，我想找到（使用Python正則表達式）所有行而不是包含單詞「錯誤」或「空」。在代碼：

varformals：PAR_OPEN PAR_CLOSE {}
| PAR_OPEN varform PAR_CLOSE {}
/* error /|錯誤PAR_CLOSE {}
/錯誤/|錯誤變量PAR_CLOSE {}
/錯誤*/| PAR_OPEN錯誤PAR_CLOSE {}
;

Answer 1

Regex101

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Debuggex Demo

描述

1st Capturing group (^((?!error|empty).)*$) 
    ^assert position at start of a line 
2nd Capturing group ((?!error|empty).)* 
    Quantifier: * Between zero and unlimited times, as many times as possible, giving back as needed [greedy] 
    Note: A repeated capturing group will only capture the last iteration. 
    Put a capturing group around the repeated group to capture all 
    iterations or use a non-capturing group instead if you're not interested 
    in the data 
    (?!error|empty) Negative Lookahead - Assert that it is impossible to match the regex below 
     1st Alternative: error 
      error matches the characters error literally (case sensitive) 
     2nd Alternative: empty 
      empty matches the characters empty literally (case sensitive) 
    . matches any character (except newline) 
$ assert position at end of a line 
g modifier: global. All matches (don't return on first match) 
m modifier: multi-line. Causes^and $ to match the begin/end of each line (not only begin/end of string)