使用正则表达式查找所有匹配项

Question

我正在尝试提取关键字（Exhibit）旁边的所有数字匹配项（nn.nn）。例如，through April 25, 2012through April 25, 2012 Exhibit 99.6 Exhibit 99.10这是我的代码。import os,reimport numpy as npos.chdir('C:\\Users\\dul\\Dropbox\\CTO\\test')def extract_data(filename):    with open(filename, 'r') as file1:        text1=file1.read()    matchexh = re.findall(r'Exhibit (\d+).(\d+)',text1)    with open('outfile.txt', "a+") as outfile:        outfile.write("\n"+matchexh)files= os.listdir("C:\\Users\\dul\\Dropbox\\CTO\\test")for file in files:    if ".txt" in file:        extract_data(file)当我运行它时，我收到一条错误消息File "C:\Users\dul\Dropbox\CTO\test\exhibitno.py", line 13, in extract_data     outfile.write("\n"+matchexh)  TypeError: cannot concatenate 'str' and 'list' objects如何获取所有匹配项并列出它们？

Answer 1

改变这个：

matchexh = re.search(r'Exhibit (\d+).(\d+)',text1).group().strip()

到：

matchexh = re.findall(r'Exhibit (\d+).(\d+)',text1)