Python 正则表达式匹配字符串替换、格式修改

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有如下数据，需要把 . 去掉

# -*- coding: utf-8 -*-"""Created on Mon Sep 25 20:47:33 2017@author: Don"""import ref = open("84.txt",'rb')r = open("84_result.txt","w+")corpus = bytes.decode(f.read()).split("\n")s = r'\d{8}.\d{2}'                 #正则表达式匹配for i in range(len(corpus)):    m = re.match(s, corpus[i])    if m is None:                  #要先判断是否为空        continue    str = m.group(0)               #得到匹配的字符串    repStr= str.replace(".","")    corpus[i] = corpus[i].replace(str, repStr)    r.write(corpus[i] + '\n')r.close()f.close()

有如下数据，需要去掉 . 并把不足十位的最后补零

# -*- coding: utf-8 -*-"""Created on Tue Sep 26 10:46:12 2017@author: Don"""import reimport copyf = open("index.txt",'rb')r = open("index_result.txt","w+")corpus = bytes.decode(f.read()).split("\n")corpuscopy = copy.copy(corpus)for i in range(len(corpus)):    if corpus[i] is None:             #判断空行        continue     tmp = corpus[i].split()    if len(tmp) == 0:        continue    indextmp = len(tmp[-1])    if '.' in tmp[-1]:                #定位.  并删除        index = tmp[-1].find('.')        tmp[-1] = tmp[-1][:index] + tmp[-1][index+1:]    if len(tmp[-1]) < 10:             #不足十位的报关码要补全        tmpstr = ''        for k in range(10 - len(tmp[-1])):            tmpstr = tmpstr + '0'        tmp[-1] = tmp[-1] + tmpstr    corpuscopy[i] = corpuscopy[i][:len(corpuscopy[i]) - indextmp] + tmp[-1]    r.write(corpuscopy[i] + '\n')r.close()f.close()

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