Python 使用来自另一个文件的输入在文件中搜索文本 [英] Python search a file for text using input from another file

问题描述

我是 Python 和编程的新手.我需要一些关于 python 脚本的帮助.有两个文件，每个文件都包含电子邮件地址(超过 5000 行).输入文件包含我想在数据文件中搜索的电子邮件地址(也包含电子邮件地址).然后我想将输出打印到文件或在控制台上显示.我搜索脚本并能够修改，但我没有得到想要的结果.你能帮我吗?

I'm new to python and programming. I need some help with a python script. There are two files each containing email addresses (more than 5000 lines). Input file contains email addresses that I want to search in the data file(also contains email addresses). Then I want to print the output to a file or display on the console. I search for scripts and was able to modify but I'm not getting the desired results. Can you please help me?

dfile1 (50K lines)
[e-mail]
[e-mail]
[e-mail]


ifile1 (10K lines)
[e-mail]
[e-mail]
[e-mail]
[e-mail]

Output file
[e-mail]
[e-mail]



datafile = 'C:\\Python27\\scripts\\dfile1.txt'
inputfile = 'C:\\Python27\\scripts\\ifile1.txt'

with open(inputfile, 'r') as f:
names = f.readlines()

outputlist = []

with open(datafile, 'r') as fd:
  for line in fd:
    name = fd.readline()
    if name[1:-1] in names:
        outputlist.append(line)
    else:
        print "Nothing found"
 print outputlist

新代码

with open(inputfile, 'r') as f:
    names = f.readlines()
outputlist = []

with open(datafile, 'r') as f:
    for line in f:
        name = f.readlines()
        if name in names:
            outputlist.append(line)
        else:
            print "Nothing found"
    print outputlist

推荐答案

我会这样做:

names=[]
outputList=[]
with open(inputfile) as f:
    for line in f:
        names.append(line.rstrip("\n")

myEmails=set(names)

with open(outputfile) as fd, open("emails.txt", "w") as output:
    for line in fd:
        for name in names:
            c=line.rstrip("\n")
            if name in myEmails:
                print name #for console
                output.write(name) #for writing to file

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