Python：解析properties文件

在项目中遇到解析properties的情况，而Python中正好没有解析properties文件的现成模块，于是从网上找到了这个脚本，有一些小地方修改了一下

原博客： Python读写properties文件

import re

import os

import tempfile

class Properties:

    def __init__(self, file_name):

        self.file_name = file_name

        self.properties = {}

        try:

            fopen = open(self.file_name, 'r')

            for line in fopen:

                line = line.strip()

                if line.find('=') > 0 and not line.startswith('#'):

                    strs = line.split('=')

                    self.properties[strs[0].strip()] = strs[1].strip()

        except Exception, e:

            raise e

        else:

            fopen.close()

    def has_key(self, key):

        return key in self.properties

    def get(self, key, default_value=''):

        if key in self.properties:

            return self.properties[key]

        return default_value

    def put(self, key, value):

        self.properties[key] = value

        replace_property(self.file_name, key + '=.*', key + '=' + value, True)

def parse(file_name):

    return Properties(file_name)

def replace_property(file_name, from_regex, to_str, append_on_not_exists=True):

    tmpfile = tempfile.TemporaryFile()

    if os.path.exists(file_name):

        r_open = open(file_name, 'r')

        pattern = re.compile(r'' + from_regex)

        found = None

        for line in r_open:

            if pattern.search(line) and not line.strip().startswith('#'):

                found = True

                line = re.sub(from_regex, to_str, line)

            tmpfile.write(line)

        if not found and append_on_not_exists:

            tmpfile.write('\n' + to_str)

        r_open.close()

        tmpfile.seek(0)

        content = tmpfile.read()

        if os.path.exists(file_name):

            os.remove(file_name)

        w_open = open(file_name, 'w')

        w_open.write(content)

        w_open.close()

        tmpfile.close()

    else:

        print "file %s not found" % file_name

使用方式：

file_path = 'xxx.properties'

props = property.parse(file_path)   #读取文件

props.put('key_a', 'value_a')       #修改/添加key=value

print props.get('key_a')            #根据key读取value

print "props.has_key('key_a')=" + str(props.has_key('key_a'))   #判断是否包含该key

参考： 
Python实用脚本（1）：读取Properties文件

原文转自：https://blog.csdn.net/xavierqwb/article/details/54848762