Python正则表达式匹配引号或“<>”

Question

I want to find and match #include directive in C programs and copy them.

So I want to create a regex, which matches both:

#include <stdlib.h>
#include "mylib.h"

and the copy it for further processing.

Sure I could create two simple regex, but I'd like to have only one to match both. I can't figure out how to make it.

So all I've got is re.compile(r"\\s*#\\s*include\\s*")

Thank you for advice.

Answer 1

data = """
#include <stdlib.h>
#include "mylib.h"
"""
import re
pattern = re.compile("#\s*include\s*(?:<.*?>|\".*?\")")
print pattern.findall(data)

Output

['#include <stdlib.h>', '#include "mylib.h"']

Answer 2

以下模式匹配：

#include [<"]\\w+?\\.h[>"]

Answer 3

另一种选择，因为我很少看到使用中的(?(id/name)yes|no)表达式的任何示例：

#\s*include\s*(?:(<)|("))\w+(\.\w+)?(?(1)>|")