ini格式文件

ini文件是Initialization File的缩写，平时用于存储软件的的配置文件。例如：MySQL数据库的配置文件。

例如：

　　[mysqld]

　　datadir=/var/lib/mysql
　　socket=/var/lib/mysql/mysql.sock
　　log-bin=py-mysql-bin
　　character-set-server=utf8
　　collation-server=utf8_general_ci
　　log-error=/var/log/mysqld.log
　　# Disabling symbolic-links is recommended to prevent assorted security risks
　　symbolic-links=0

　　[mysqld_safe]
　　log-error=/var/log/mariadb/mariadb.log
　　pid-file=/var/run/mariadb/mariadb.pid

　　[client]
　　default-character-set=utf8

这种格式是可以直接使用open来出来，考虑到自己处理比较麻烦，所以Python为我们提供了更为方便的方式。

import configparser

config = configparser.ConfigParser()
config.read('files/my.ini', encoding='utf-8')
# config.read('/Users/wupeiqi/PycharmProjects/luffyCourse/day09/files/my.ini', encoding='utf-8')

# 1.获取所有的节点
"""
result = config.sections()
print(result)  # ['mysqld', 'mysqld_safe', 'client']
"""

# 2.获取节点下的键值
"""
result = config.items("mysqld_safe")
print(result)  # [('log-error', '/var/log/mariadb/mariadb.log'), ('pid-file', '/var/run/mariadb/mariadb.pid')]

for key, value in config.items("mysqld_safe"):
    print(key, value)
"""

# 3.获取某个节点下的键对应的值
"""
result = config.get("mysqld","collation-server")
print(result)
"""

# 4.其他

# 4.1 是否存在节点
# v1 = config.has_section("client")
# print(v1)

# 4.2 添加一个节点
# config.add_section("group")
# config.set('group','name','wupeiqi')
# config.set('client','name','wupeiqi')
# config.write(open('files/new.ini', mode='w', encoding='utf-8'))

# 4.3 删除
# config.remove_section('client')
# config.remove_option("mysqld", "datadir")
# config.write(open('files/new.ini', mode='w', encoding='utf-8'))

读取所有节点

import configparser

config = configparser.ConfigParser()
config.read('/Users/wupeiqi/PycharmProjects/luffyCourse/day09/files/my.conf', encoding='utf-8')
# config.read('my.conf', encoding='utf-8')
ret = config.sections()
print(ret) 

>>输出
['mysqld', 'mysqld_safe', 'client']

读取节点下的键值

import configparser

config = configparser.ConfigParser()
config.read('/Users/wupeiqi/PycharmProjects/luffyCourse/day09/files/my.conf', encoding='utf-8')
# config.read('my.conf', encoding='utf-8')
item_list = config.items("mysqld_safe")
print(item_list) 

>>输出
[('log-error', '/var/log/mariadb/mariadb.log'), ('pid-file', '/var/run/mariadb/mariadb.pid')]

读取节点下值（根据节点+键）

import configparser

config = configparser.ConfigParser()
config.read('/Users/wupeiqi/PycharmProjects/luffyCourse/day09/files/my.conf', encoding='utf-8')

value = config.get('mysqld', 'log-bin')
print(value)

>>输出
py-mysql-bin

检查、删除、添加节点

import configparser

config = configparser.ConfigParser()
config.read('/Users/wupeiqi/PycharmProjects/luffyCourse/day09/files/my.conf', encoding='utf-8')
# config.read('my.conf', encoding='utf-8')


# 检查
has_sec = config.has_section('mysqld')
print(has_sec)

# 添加节点
config.add_section("SEC_1")
# 节点中设置键值
config.set('SEC_1', 'k10', "123")
config.set('SEC_1', 'name', "哈哈哈哈哈")

config.add_section("SEC_2")
config.set('SEC_2', 'k10', "123")
# 内容写入新文件
config.write(open('/Users/wupeiqi/PycharmProjects/luffyCourse/day09/files/xxoo.conf', 'w'))


# 删除节点
config.remove_section("SEC_2")
# 删除节点中的键值
config.remove_option('SEC_1', 'k10')
config.write(open('/Users/wupeiqi/PycharmProjects/luffyCourse/day09/files/new.conf', 'w'))

ini格式文件

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