Home Backend Development Python Tutorial How to implement automatic import of packages in python

How to implement automatic import of packages in python

May 09, 2023 pm 03:25 PM
python

问题描述: 代码编写过程中,需要引入文件,但是引入的文件随着项目的变大会变多,所以编写了一个自动导入的方法,会根据文件名称的特点进行导入。

def auto_import(packagePath: str, fileTag: str, interceptLength: int, level=1):
    """
    自动导入函数,导入具有某个标识的文件
    :param packagePath: 当前包路径
    :param level: 软件包层级
    :param fileTag:文件名称标识
    :param interceptLength:导入属性截取名称
    :return:
    """
    # 定义导入属性列表和包
    att_list = []
    # 获取对应的包层级
    rank = level
    package = ''
    for i in range(level):
        # 获取父级包名称拼接包名称
        package += packagePath.split('\\')[-rank] + '.'
        rank -= 1
    # 遍历当前包下的所有文件
    for fileName in os.listdir(packagePath):
        # 筛选出nameTag的文件进行导入
        if fileTag in fileName:
            print(f'导入包名称:{package}' + fileName[:-3])
            # 动态导入包,并获取包内的具体模块、属性
            att_list.append(
                # 导入包中的某个属性
                importlib.import_module(
                    # 拼接模块路径
                    f'{package}' + fileName[:-3]
                    # 获取模块中的对应属性
                ).__dict__[fileName[:-interceptLength]])
    # 返回属性列表
    return att_list
Copy after login

假如我们创建了多个TableModel文件,需要校验对应的文件是否在数据库中存在,那么我们就可以这么用:

import os
import auto_import


def auto_check_model():
    """
    导入tableModel中的所有文件,验证数据库中表是否存在
    :return: 返回验证结果
    """
    # 获取当前文件夹路径
    packagePath = os.path.dirname(os.path.realpath(__file__))
    # 获取所有model文件
    model_list = auto_import(packagePath=packagePath, fileTag='Model',  interceptLength=8, level=2)
    # 建立数据库连接
    connect = DatabaseOperation().connect()
    # 检查model在数据库中是否存在,不存在则创建
    for i in range(len(model_list)):
        model_list[i].metadata.create_all(connect)
        print(f"####     {model_list[i].__name__}校验完成!    ####")
Copy after login

The above is the detailed content of How to implement automatic import of packages in python. For more information, please follow other related articles on the PHP Chinese website!

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

Choosing Between PHP and Python: A Guide Choosing Between PHP and Python: A Guide Apr 18, 2025 am 12:24 AM

PHP is suitable for web development and rapid prototyping, and Python is suitable for data science and machine learning. 1.PHP is used for dynamic web development, with simple syntax and suitable for rapid development. 2. Python has concise syntax, is suitable for multiple fields, and has a strong library ecosystem.

PHP and Python: Different Paradigms Explained PHP and Python: Different Paradigms Explained Apr 18, 2025 am 12:26 AM

PHP is mainly procedural programming, but also supports object-oriented programming (OOP); Python supports a variety of paradigms, including OOP, functional and procedural programming. PHP is suitable for web development, and Python is suitable for a variety of applications such as data analysis and machine learning.

Can vs code run in Windows 8 Can vs code run in Windows 8 Apr 15, 2025 pm 07:24 PM

VS Code can run on Windows 8, but the experience may not be great. First make sure the system has been updated to the latest patch, then download the VS Code installation package that matches the system architecture and install it as prompted. After installation, be aware that some extensions may be incompatible with Windows 8 and need to look for alternative extensions or use newer Windows systems in a virtual machine. Install the necessary extensions to check whether they work properly. Although VS Code is feasible on Windows 8, it is recommended to upgrade to a newer Windows system for a better development experience and security.

Is the vscode extension malicious? Is the vscode extension malicious? Apr 15, 2025 pm 07:57 PM

VS Code extensions pose malicious risks, such as hiding malicious code, exploiting vulnerabilities, and masturbating as legitimate extensions. Methods to identify malicious extensions include: checking publishers, reading comments, checking code, and installing with caution. Security measures also include: security awareness, good habits, regular updates and antivirus software.

How to run programs in terminal vscode How to run programs in terminal vscode Apr 15, 2025 pm 06:42 PM

In VS Code, you can run the program in the terminal through the following steps: Prepare the code and open the integrated terminal to ensure that the code directory is consistent with the terminal working directory. Select the run command according to the programming language (such as Python's python your_file_name.py) to check whether it runs successfully and resolve errors. Use the debugger to improve debugging efficiency.

Can visual studio code be used in python Can visual studio code be used in python Apr 15, 2025 pm 08:18 PM

VS Code can be used to write Python and provides many features that make it an ideal tool for developing Python applications. It allows users to: install Python extensions to get functions such as code completion, syntax highlighting, and debugging. Use the debugger to track code step by step, find and fix errors. Integrate Git for version control. Use code formatting tools to maintain code consistency. Use the Linting tool to spot potential problems ahead of time.

Can vscode be used for mac Can vscode be used for mac Apr 15, 2025 pm 07:36 PM

VS Code is available on Mac. It has powerful extensions, Git integration, terminal and debugger, and also offers a wealth of setup options. However, for particularly large projects or highly professional development, VS Code may have performance or functional limitations.

Can vscode run ipynb Can vscode run ipynb Apr 15, 2025 pm 07:30 PM

The key to running Jupyter Notebook in VS Code is to ensure that the Python environment is properly configured, understand that the code execution order is consistent with the cell order, and be aware of large files or external libraries that may affect performance. The code completion and debugging functions provided by VS Code can greatly improve coding efficiency and reduce errors.

See all articles