正则分组取数字

# -*- coding: utf-8 -*-

import re

lib_num_pattern = re.compile(r‘(\d+)\.(\d+)‘)

chars = ‘入库179.00件‘
result = lib_num_pattern.search(chars)
print(‘re_search:‘, result.group(), result.groups())
print(‘type: ‘, type(result.groups()))
print(‘lib_num: ‘, result.groups()[0])

import java.util.regex.Matcher;
import java.util.regex.Pattern;
 
public class RegexMatches
{
    public static void main( String[] args ){

      String line = "入库179.00件";
      String pattern = "(\\d+)\\.(\\d+)";
 
      Pattern r = Pattern.compile(pattern);
 
      Matcher m = r.matcher(line);
      if (m.find( )) {
         System.out.println("Found value: " + m.group() );
         System.out.println("Found value: " + m.group(1) );
      } else {
         System.out.println("NO MATCH");
      }
   }
}