python正则表达式-列表中的re.findall() [英] python regular expression - re.findall() in list

问题描述

这是我的清单:

lista=[u'REG_S_3_UMTS_0_0 (RNC)', u'REG_S_3_UMTS_0_1 (RNC)', u'REG_S_3_UMTS_0_2 (RNC)', u'REG_S_2_GSM_NORT_CBSP_bsc_0_0 (BSC)', u'REG_S_2_GSM_NORT_CBSP_bsc_0_1 (BSC)', u'REG_S_2_GSM_NORT_CBSP_bsc_0_2 (BSC)', u'REG_S_3_GSM_ERIC_CBSP_bsc_0_0 (BSC)', u'REG_S_3_GSM_ERIC_CBSP_bsc_0_1 (BSC)', u'REG_S_3_GSM_ERIC_CBSP_bsc_0_2 (BSC)', u'REG_S_3_GSM_HUAP_CBSM_bsc_0_0 (BSC)', u'REG_S_3_GSM_HUAP_CBSM_bsc_0_1 (BSC)', u'REG_S_3_GSM_HUAP_CBSM_bsc_0_2 (BSC)', u'REG_S_3_GSM_HUA_CBSM_bsc_0_0 (BSC)', u'REG_S_3_GSM_HUA_CBSM_bsc_0_1 (BSC)', u'REG_S_3_GSM_HUA_CBSM_bsc_0_2 (BSC)', u'REG_S_3_GSM_IPAC_SABP_bsc_0_0 (BSC)', u'REG_S_3_GSM_IPAC_SABP_bsc_0_1 (BSC)', u'REG_S_3_GSM_IPAC_SABP_bsc_0_2 (BSC)', u'REG_S_3_GSM_NOKI_CLNS_bsc_0_0 (BSC)', u'REG_S_3_GSM_NOKI_CLNS_bsc_0_1 (BSC)', u'REG_S_3_GSM_NOKI_CLNS_bsc_0_2 (BSC)', u'REG_S_3_GSM_NOKI_RFC1_bsc_0_0 (BSC)', u'REG_S_3_GSM_NOKI_RFC1_bsc_0_1 (BSC)', u'REG_S_3_GSM_NOKI_RFC1_bsc_0_2 (BSC)', u'REG_S_3_GSM_NORT_CBSP_bsc_0_0 (BSC)', u'REG_S_3_GSM_NORT_CBSP_bsc_0_1 (BSC)', u'REG_S_3_GSM_NORT_CBSP_bsc_0_2 (BSC)', u'REG_S_3_GSM_SIEM_BSCI_bsc_0_0 (BSC)', u'REG_S_3_GSM_SIEM_BSCI_bsc_0_1 (BSC)', u'REG_S_3_GSM_SIEM_BSCI_bsc_0_2 (BSC)', u'REG_S_GSM_ERIC_CBSP_bsc_0_0 (BSC)', u'REG_S_GSM_ERIC_CBSP_bsc_0_1 (BSC)', u'REG_S_GSM_ERIC_CBSP_bsc_0_2 (BSC)', u'REG_S_GSM_HUAP_CBSM_bsc_0_0 (BSC)', u'REG_S_GSM_HUAP_CBSM_bsc_0_1 (BSC)', u'REG_S_GSM_HUAP_CBSM_bsc_0_2 (BSC)', u'REG_S_GSM_HUA_CBSM_bsc_0_0 (BSC)', u'REG_S_GSM_HUA_CBSM_bsc_0_1 (BSC)', u'REG_S_GSM_HUA_CBSM_bsc_0_2 (BSC)', u'REG_S_GSM_NORT_CBSP_bsc_0_0 (BSC)', u'REG_S_GSM_NORT_CBSP_bsc_0_1 (BSC)', u'REG_S_GSM_NORT_CBSP_bsc_0_2 (BSC)', u'Pool ID: 200']

这就是我的职责:

def Filter_List(lista):

     string = ''.join(lista)
     match = re.findall(r"\(([A-Z]+)\)|Pool ID", string)
     return match

结果我得到:

[u'RNC', u'RNC', u'RNC', u'BSC', u'BSC', u'BSC', u'BSC', u'BSC', u'BSC', u'BSC', u'BSC', u'BSC', u'BSC', u'BSC', u'BSC', u'BSC', u'BSC', u'BSC', u'BSC', u'BSC', u'BSC', u'BSC', u'BSC', u'BSC', u'BSC', u'BSC', u'BSC', u'BSC', u'BSC', u'BSC', u'BSC', u'BSC', u'BSC', u'BSC', u'BSC', u'BSC', u'BSC', u'BSC', u'BSC', u'BSC', u'BSC', u'BSC', u'']

但是最后一个元素(应该是:Pool ID)没有显示.只有: u'' .有谁知道我应该如何改变我的表情?提前致谢！！！

But the last element (it should be: Pool ID) doesn't display.There's only: u'' . Does anyone know how should I change my expression? Thanks in advance !!!

推荐答案

注意 re.findall 如果正则表达式模式定义了捕获组，则返回(列表)元组.删除它:

Note that re.findall returns (list of) tuples if a regex pattern has capture groups defined. Remove it:

import re
lista=[u'REG_S_3_UMTS_0_0 (RNC)', u'REG_S_3_UMTS_0_1 (RNC)', u'REG_S_3_UMTS_0_2 (RNC)', u'REG_S_2_GSM_NORT_CBSP_bsc_0_0 (BSC)', u'REG_S_2_GSM_NORT_CBSP_bsc_0_1 (BSC)', u'REG_S_2_GSM_NORT_CBSP_bsc_0_2 (BSC)', u'REG_S_3_GSM_ERIC_CBSP_bsc_0_0 (BSC)', u'REG_S_3_GSM_ERIC_CBSP_bsc_0_1 (BSC)', u'REG_S_3_GSM_ERIC_CBSP_bsc_0_2 (BSC)', u'REG_S_3_GSM_HUAP_CBSM_bsc_0_0 (BSC)', u'REG_S_3_GSM_HUAP_CBSM_bsc_0_1 (BSC)', u'REG_S_3_GSM_HUAP_CBSM_bsc_0_2 (BSC)', u'REG_S_3_GSM_HUA_CBSM_bsc_0_0 (BSC)', u'REG_S_3_GSM_HUA_CBSM_bsc_0_1 (BSC)', u'REG_S_3_GSM_HUA_CBSM_bsc_0_2 (BSC)', u'REG_S_3_GSM_IPAC_SABP_bsc_0_0 (BSC)', u'REG_S_3_GSM_IPAC_SABP_bsc_0_1 (BSC)', u'REG_S_3_GSM_IPAC_SABP_bsc_0_2 (BSC)', u'REG_S_3_GSM_NOKI_CLNS_bsc_0_0 (BSC)', u'REG_S_3_GSM_NOKI_CLNS_bsc_0_1 (BSC)', u'REG_S_3_GSM_NOKI_CLNS_bsc_0_2 (BSC)', u'REG_S_3_GSM_NOKI_RFC1_bsc_0_0 (BSC)', u'REG_S_3_GSM_NOKI_RFC1_bsc_0_1 (BSC)', u'REG_S_3_GSM_NOKI_RFC1_bsc_0_2 (BSC)', u'REG_S_3_GSM_NORT_CBSP_bsc_0_0 (BSC)', u'REG_S_3_GSM_NORT_CBSP_bsc_0_1 (BSC)', u'REG_S_3_GSM_NORT_CBSP_bsc_0_2 (BSC)', u'REG_S_3_GSM_SIEM_BSCI_bsc_0_0 (BSC)', u'REG_S_3_GSM_SIEM_BSCI_bsc_0_1 (BSC)', u'REG_S_3_GSM_SIEM_BSCI_bsc_0_2 (BSC)', u'REG_S_GSM_ERIC_CBSP_bsc_0_0 (BSC)', u'REG_S_GSM_ERIC_CBSP_bsc_0_1 (BSC)', u'REG_S_GSM_ERIC_CBSP_bsc_0_2 (BSC)', u'REG_S_GSM_HUAP_CBSM_bsc_0_0 (BSC)', u'REG_S_GSM_HUAP_CBSM_bsc_0_1 (BSC)', u'REG_S_GSM_HUAP_CBSM_bsc_0_2 (BSC)', u'REG_S_GSM_HUA_CBSM_bsc_0_0 (BSC)', u'REG_S_GSM_HUA_CBSM_bsc_0_1 (BSC)', u'REG_S_GSM_HUA_CBSM_bsc_0_2 (BSC)', u'REG_S_GSM_NORT_CBSP_bsc_0_0 (BSC)', u'REG_S_GSM_NORT_CBSP_bsc_0_1 (BSC)', u'REG_S_GSM_NORT_CBSP_bsc_0_2 (BSC)', u'Pool ID: 200']
string = ''.join(lista)
match = re.findall(r"\([A-Z]+\)|Pool ID", string)
print(match)

参见这个 Python 演示返回

[u'(RNC)', u'(RNC)', u'(RNC)', u'(BSC)', u'(BSC)', u'(BSC)', u'(BSC)', u'(BSC)', u'(BSC)', u'(BSC)', u'(BSC)', u'(BSC)', u'(BSC)', u'(BSC)', u'(BSC)', u'(BSC)', u'(BSC)', u'(BSC)', u'(BSC)', u'(BSC)', u'(BSC)', u'(BSC)', u'(BSC)', u'(BSC)', u'(BSC)', u'(BSC)', u'(BSC)', u'(BSC))', u'(BSC)', u'(BSC)', u'(BSC)', u'(BSC)', u'(BSC)', u'(BSC)', u'(BSC)', u'(BSC)', u'(BSC)', u'(BSC)', u'(BSC)', u'(BSC)', u'(BSC)', u'(BSC)', u'Pool ID']

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