config.json方式实现全局配置参数的读写操作
使用python实现以下功能:
1、使用将接口获取的变量值,写入到当前目录下的config文件中,如delayTime=10;
2、读取当前目录下的config文件中,特定变量的值,如delayTime=10;
3、若config文件或者节点不存在,则自动进行创建;
#!/usr/bin/env python
# -*- coding: utf-8 -*-
import json,os
def write_config_json(key=None, value=None,section="default", config_file='config.json'):
"""
将接口获取的变量值写入到config文件中
:param config_file: config文件路径,默认为'config.json'
:param key: 需要写入的变量名
:param value: 需要写入的变量值
:return: 如果文件不存在则创建,如果节点不存在则新增,如果节点存在则覆盖
"""
if not os.path.exists(config_file):
print(f'文件{config_file}不存在,将创建新的文件')
with open(config_file, 'w', encoding='utf-8') as f:
json.dump({f'{section}':{}}, f)
with open(config_file, 'r', encoding='utf-8') as f:
config = json.load(f)
config[section][key] = value
with open(config_file, 'w', encoding='utf-8') as f:
json.dump(config, f, indent=4)
# 封装函数:一次写入多个值至配置文件,适用于大量数据写入,提高性能
def write_configs_json(keys_values_dict, section="default", config_file='config.json'):
"""
将接口获取的变量值写入到config文件中
接受一个变量名列表,和一个参数value,它接受一个与key列表长度相同的值列表。然后遍历这个元组列表,将每个元组的键值对写入到配置文件中。
:param config_file: config文件路径,默认为'config.json'
:param key: 需要写入的变量名
:param value: 需要写入的变量值
:return: 如果文件不存在则创建,如果节点不存在则新增,如果节点存在则覆盖
"""
if not os.path.exists(config_file):
print(f'文件{config_file}不存在,将创建新的文件')
with open(config_file, 'w', encoding='utf-8') as f:
json.dump({section:{}}, f)
with open(config_file, 'r', encoding='utf-8') as f:
config = json.load(f)
if section not in config:
config[section] = {}
# 设置变量值
for key, value in keys_values_dict.items():
config[f'{section}'][key] = str(value)
# 写入配置文件
with open(config_file, 'w', encoding='utf-8') as f:
json.dump(config, f, indent=2)
def read_config_json(key=None, section="default", config_file='config.json'):
"""
读取config文件中的特定变量值
:param config_file: config文件路径,默认为'config.json'
:param key: 需要读取的变量名
:return: 返回读取到的变量值,如果文件或节点不存在则返回None
"""
if not os.path.exists(config_file):
print(f'文件{config_file}不存在')
return None
with open(config_file, 'r', encoding='utf-8') as f:
config = json.load(f)
if key not in config[section]:
print(f'节点{key}不存在')
return None
return config[section][key]
# 打印config文件的内容
def type_config(config_file='config.json'):
# 若配置文件存在,则读取所有变量值
if os.path.exists(config_file):
result = open(config_file, "r", encoding='utf-8').read()
print(f"result={result}")
return result
# 若配置文件不存在,则返回空值
else:
return None
if __name__ == '__main__':
# 以上代码实现了读取和写入config.json文件的功能,
# 其中 read_config_json 函数用于读取特定变量的值,
# write_config_json 函数用于将接口获取的变量值写入到config文件中。
# 如果config文件不存在,会自动创建新的文件;
# 如果节点不存在,会新增节点;
# 如果节点存在,会覆盖原有的节点值。
# 测试单个写入操作
write_config_json('runTimes', 99)
write_config_json('delayTime', 88)
write_config_json('sleepTime', 66)
print(f"write_config_json={type_config()}")
# 测试批量写入操作
my_section = {
"key1": "value1",
"key2": "value2",
"key3": "value3"
}
write_configs_json(my_section,"HRD")
print(f"write_configs_json={type_config()}")
# 测试读取操作
value = read_config_json('delayTime')
print(value)
result={
"default": {
"runTimes": 99,
"delayTime": 88,
"sleepTime": 66
},
"my_section": {
"key1": "value1",
"key2": "value2",
"key3": "value3"
},
"HRD": {
"key1": "value1",
"key2": "value2",
"key3": "value3"
}
}
write_config_json={
"default": {
"runTimes": 99,
"delayTime": 88,
"sleepTime": 66
},
"my_section": {
"key1": "value1",
"key2": "value2",
"key3": "value3"
},
"HRD": {
"key1": "value1",
"key2": "value2",
"key3": "value3"
}
}
result={
"default": {
"runTimes": 99,
"delayTime": 88,
"sleepTime": 66
},
"my_section": {
"key1": "value1",
"key2": "value2",
"key3": "value3"
},
"HRD": {
"key1": "value1",
"key2": "value2",
"key3": "value3"
}
}
write_configs_json={
"default": {
"runTimes": 99,
"delayTime": 88,
"sleepTime": 66
},
"my_section": {
"key1": "value1",
"key2": "value2",
"key3": "value3"
},
"HRD": {
"key1": "value1",
"key2": "value2",
"key3": "value3"
}
}
88