no module named 'flask'

这是一个 python 程序运行时出现的错误信息，表明程序在运行中使用了 Flask 模块，但是系统中并没有安装该模块。可以通过运行 "pip install flask" 来安装 Flask 模块。

相关问题

no module named flask

这是一个 Python 程序运行时的错误提示，意思是找不到名为 "flask" 的模块。可能是因为这个模块没有正确安装，或者程序所在的环境中缺少这个模块。可以尝试使用 pip 安装这个模块：在命令行中输入 "pip install flask"。

No module named flask

It seems like you're encountering an error related to the Flask module. The error message "No module named flask" indicates that Flask is not installed in your Python environment.

To resolve this issue, you can follow these steps:

1. Open your command prompt or terminal.
2. Create a virtual environment (optional but recommended):

   python -m venv myenv

3. Activate the virtual environment:
- For Windows:

     myenv\Scripts\activate

- For macOS/Linux:

     source myenv/bin/activate

4. Install Flask using pip:

   pip install flask

5. Once the installation is complete, you should be able to import Flask in your Python script without any errors.

Make sure you have a stable internet connection during the installation process. If you already have Flask installed but are still encountering this error, try updating Flask to the latest version by running `pip install --upgrade flask`.

Let me know if you have any further questions!