A java call to python prompts No module named

yanxuefeng1516 注册会员
2023-02-25 12:09

This answer quotes ChatGPT
If you have any questions, please reply to me

The error message "No module named xlwt" means that a module named "xlwt" was not found in the Python environment. xlwt is a Python module for writing data to Excel files.

To solve this problem, you need to install the xlwt module in the Python environment. You can install it using the pip tool. You can run the following command from the command line window:

pip install xlwt

If you are using Python 3, you may need to use pip3:

pip3 install xlwt

After the installation is successful, you can run your Java code again to see if the same error occurs again.

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deathcj 注册会员
2023-02-25 12:09

the reference answer GPT ᴼ ᴾ ᴱ ᴺ ᴬ ᴵ < br / > the error message shows the Python environment is not installed XLWT module, can be used in the Python environment PIP command to install the module:

pip install xlwt

If there are multiple versions of Python in the Python environment, make sure that the version of Python used by the Java program is the same as the installed module. You can use the set(String key, String value) method of the PythonInterpreter class in a Java program to set the Python interpreter path and Python module path, ensuring that the Python environment being called is consistent with the required module. For example:

PythonInterpreter.initialize(System.getProperties(), System.getProperties(), new String[] { pythonPath });
PythonInterpreter pythonInterpreter = new PythonInterpreter();
pythonInterpreter.set("pythonPath", pythonPath);
pythonInterpreter.set("pythonLibPath", pythonLibPath);
pythonInterpreter.exec("import sys");
pythonInterpreter.exec("sys.path.append(pythonLibPath)");

Where pythonPath is the path of the Python interpreter and pythonLibPath is the path of the Python module. Once the setup is complete, you can call the Python module in your Java program.

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cwk73914 注册会员
2023-02-25 12:09

The answer part references GPT, GPT_Pro better solution
Java calls Python script No module named xiwt, This is because when a Python script is called in Java, the module or package that the Python script needs to import is not installed. For example, to use the numpy library, you must install numpy in your Python environment, or you will get an error No module named 'numpy'.

Solution:

Add the appropriate module or package when installing Python and recompile the Java program after the installation is complete.
install the appropriate module or package using the pip command, such as pip install numpy on the terminal to install the numpy library.
Copy the module or package to be used into the same folder as the Java program, and then recompile the Java program.
Modify the sys.path variable in the Python environment. Add the folder where the module or package is located to sys.path. For example, enter import sys in the Python terminal. Sys. Path. Append("/usr/local/lib/python2.7 / site - packages ").
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