regex build

正則構建

構建複雜的單行正則弦線。

首選的構建方式是在RegexBuild實例上使用一線通話鏈。對於更複雜的任何事情，將其用作上下文管理器將允許在同一實例上進行多個調用。

RegexBuild的實例可以與字符串互換使用，從而可以使用多個嵌套實例。

 > >> original_regex = r'.*\Roaming\(Microsoft|NVIDIA|Adobe\.*(Asset|Native)Cache)\'

# Complex example
> >> with RegexBuild ( r'.*\Roaming\' ) as build_regex :
...     build_regex (
...         'Microsoft' , 'NVIDIA' , RegexBuild ( r'Adobe\.*' )( 'Asset' , 'Native' )( 'Cache' ),
...     )( r'\' )

> >> original_regex == str ( build_regex )
True

# Different ways to build the same regex
> >> with RegexBuild ( '(?i)' , exit = '$' ) as case_insensitive :
...     # As one line
...     case_insensitive ( 'prefix1_' )( 'word1' , 'word2' )( '_suffix1' )
...
...     # As context managers
...     with case_insensitive ( 'prefix2_' ) as prefix :
...         with prefix ( 'word2' , 'word3' ) as words :
...             words ( '_suffix2' )
...
...     # As context manager using the "end" parameter
...     with case_insensitive ( 'prefix3_' , end = '_suffix3' ) as prefix :
...         prefix ( 'word4' )
...         prefix ( 'word5' )
...

> >> case_insensitive
'(?i)(prefix1_(word1|word2)_suffix1|prefix2_(word3|word4)_suffix2|prefix3_(word5|word6)_suffix3)$'