Python读取文件，查找字符串并删除字符 [英] Python Read File, Look up a String and Remove Characters

问题描述

我有一组数字(NDC - 药物编号)，其中包含 -.我正在尝试读取文件，删除 - 并将数字写入新文件.对此的任何帮助将不胜感激.使用 Py 2.7

I have a set of numbers (NDC - drug numbers) that have a - in them. I am trying to read the file, remove the - and write the numbers to a new file. Any help with this would be appreciated. Using Py 2.7

1. 68817-0134-50
2. 68817-0134-50
3. 68817-0134-50

问题是连字符并不总是在同一位置.

The issue is that the hyphen is not always in the same position.

1. 8290-033010

它会改变并且可以在任何位置

It changes and can be in any position

with open('c:\NDCHypen.txt', 'r') as infile,
     open('c:\NDCOnly.txt', 'w') as outfile:
    replace("-", "")

推荐答案

with open(r'c:\NDCHypen.txt', 'r') as infile, \
     open(r'c:\NDCOnly.txt', 'w') as outfile:
    data = infile.read()
    data = data.replace("-", "")
    outfile.write(data)

为了防止行尾转换(例如在 '\r\n' 和 \n' 之间)，以二进制模式打开这两个文件: pass 'rb' 或 'wb' 作为 open 的第二个参数.

To prevent the conversion of line endings (e.g. between '\r\n' and \n'), open both files in binary mode: pass 'rb' or 'wb' as the 2nd arg of open.

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