python configparser模块

import configparser


"""
sections() 返回所有的section
has_section(section) 判断是否有指定的section
has_option(section, option) 判断是否有指定的section中的option
options(section) 返回指定section中的所有option的列表
read(filenames, encoding=None) 给定文件名，读配置文件
read_file(f, filename=None) 给定文件描述符，读配置文件
read_string(string) 从字符串中读取配置文件
read_dict(dictionary) 从字典中读取配置文件
get(section, option, raw=False, vars=None, fallback=_UNSET) 读取指定的sention中的option内容，string
getint(section, options, raw=False, vars=None, fallback=_UNSET) 同get，结果转int
getfloat(section, options, raw=False, vars=None, fallback=_UNSET) 同get，结果转float
getboolean(section, options, raw=False, vars=None, fallback=_UNSET) 同get，结果转bool
items(section=_UNSET, raw=False, vars=None) 给section返回(name, value)，否则(section_name, section_proxy)
remove_section(section) 删除section
remove_option(section, option) 删除指定section的option
set(section, option, value) 设置option
write(fp, space_around_delimiters=True) 写配置文件
"""


def write_config(filename):
    config = configparser.ConfigParser()
    # set db
    section_name = 'db'
    config.add_section(section_name)
    config.set(section_name, 'dbname', 'MySQL')
    config.set(section_name, 'host', '127.0.0.1')
    config.set(section_name, 'port', '80')
    config.set(section_name, 'password', '123456')
    config.set(section_name, 'databasename', 'test')

    # set app
    section_name = 'app'
    config.add_section(section_name)
    config.set(section_name, 'loggerapp', '192.168.20.2')
    config.set(section_name, 'reportapp', '192.168.20.3')

    # write to file
    with open(filename, 'a') as fd:
        config.write(fd)


def update_config(filename, section, **kwargs):
    config = configparser.ConfigParser()
    config.read(filename)
    # print(config.sections())
    for section in config.sections():
        print("[", section, "]")
        items = config.items(section)
        for item in items:
            print("	", item[0], " = ", item[1])
    if config.has_option("db", "dbname"):
        config.set("db", "dbname", "11")
        print("...............")
    for key in kwargs:
        print("	", key, " = ", kwargs[key])
        if config.has_option(section, key):
            config.set(section, key, kwargs[key])
            print("...............")

    with open(filename, 'r+') as fd:
        config.write(fd)


if __name__ == '__main__':
    file_name = 'test.conf'
    write_config(file_name)
    update_config(file_name, 'app', reportapp='192.168.100.100')