使用本地包相对导入时ConfigParser无法读取文件

错误回溯信息 #

Traceback (most recent call last):
  File "F:\Coding\user.py", line 2, in <module>
    from db_handler.handler import check
  File "F:\Coding\db_handler\handler.py", line 14, in <module>
    params = db_config()
             ^^^^^^^^^^^
  File "F:\Coding\db_handler\config.py", line 22, in db_config
    raise Exception('Section {0} not found in the {1} file'.format(section, filename))
Exception: Section db_info not found in the config.ini file

项目文件结构 #

├db_handler
|   └───config.ini
|   └───config.py
|   └───handler.py
|   └───__init__.py
├user.py

各文件内容 #

config.ini #

[db_info]
host=somesite.com
database=profiles
user=hilfing
password=pass
port=5432

config.py #

def db_config(filename='config.ini', section='db_info'):
    # create a parser
    parser = ConfigParser()
    # read config file
    parser.read(filename)
    db = {}
    if parser.has_section(section):
        params = parser.items(section)
        for param in params:
            db[param[0]] = param[1]
    else:
        raise Exception('Section {0} not found in the {1} file'.format(section, filename))
    return db

handler.py #

import psycopg2
from .config import db_config

# read connection parameters
params = db_config()

# connect to the PostgreSQL server
try:
    conn = psycopg2.connect(**params)
except (Exception, psycopg2.DatabaseError) as error:
    print(error)

user.py #

from db_handler.handler import check

c = check()
print(c)

#Other code...

已尝试的解决方法 #

• 给config.py中的filename参数添加.或./前缀，问题未解决
• 将handler.py中的相对导入from .config import db_config改为import config，单独运行handler.py时有效，但从user.py导入整个包时出错

最终解决办法 #

将db_handler目录下的config.ini移动到项目根目录（与user.py同级）即可正常读取配置。

内容的提问来源于stack exchange，提问作者HilFing_Real