C*********m
发帖数: 213 | 1 向这里的高手请教一个小问题。想用python re 表达式匹配文本
[[xref:12345671|database record]][[wikipedia:AnotherLink]] test line 1
[[xref:12345672]] Test line 2
...
[[xref:12345690|another record]] test line 20
中[[xref:...]]中的内容，但是希望capture返回结果中xref:后面的数字以及|后面的
内容。
用 m = re.compile(r'\[\[xref:(\d+)(.*)\]\]')可以处理后面几行，但是第一行会把
[[wikipedia的内容也抓到一起。 | r*******n
发帖数: 3020 | 2 because .* is greedy,
so try .*?
The following from Document of Python.
*?, +?, ??
The '*', '+', and '?' qualifiers are all greedy; they match as much text
as possible. Sometimes this behaviour isn’t desired; if the RE <.*> is
matched against 'title', it will match the entire string, and not
just ''. Adding '?' after the qualifier makes it perform the match in
non-greedy or minimal fashion; as few characters as possible will be matched
. Using .*? in the previous expression will
【在 C*********m 的大作中提到】
: 向这里的高手请教一个小问题。想用python re 表达式匹配文本
: [[xref:12345671|database record]][[wikipedia:AnotherLink]] test line 1
: [[xref:12345672]] Test line 2
: ...
: [[xref:12345690|another record]] test line 20
: 中[[xref:...]]中的内容，但是希望capture返回结果中xref:后面的数字以及|后面的
: 内容。
: 用 m = re.compile(r'\[\[xref:(\d+)(.*)\]\]')可以处理后面几行，但是第一行会把
: [[wikipedia的内容也抓到一起。
| C*********m
发帖数: 213 | 3 多谢. 可以了.
text
matched
【在 r*******n 的大作中提到】
: because .* is greedy,
: so try .*?
: The following from Document of Python.
: *?, +?, ??
: The '*', '+', and '?' qualifiers are all greedy; they match as much text
: as possible. Sometimes this behaviour isn’t desired; if the RE <.*> is
: matched against 'title', it will match the entire string, and not
: just ''. Adding '?' after the qualifier makes it perform the match in
: non-greedy or minimal fashion; as few characters as possible will be matched
: . Using .*? in the previous expression will
|
|
