How to invoke third-party Python libraries in Qt?

2 years ago
Benjamin Taylor
1 minute

In Qt, calling third-party Python libraries requires the use of either PyQt or PySide. These libraries allow you to embed a Python interpreter in Qt and call Python’s third-party libraries.

Here is an example of using PyQt to call a Python third-party library:

from PyQt5.QtWidgets import QApplication
from PyQt5.QtCore import QProcess

if __name__ == '__main__':
    app = QApplication([])

    # 创建一个QProcess对象
    process = QProcess()

    # 设置要执行的Python脚本
    process.start('python', ['-c', 'import numpy; print(numpy.array([1, 2, 3]))'])

    # 等待进程结束
    process.waitForFinished()

    # 读取进程的输出
    output = process.readAll()
    print(output.data().decode("utf-8"))

    app.exec_()

In this example, we are using QProcess to create a child process, then executing a Python script that imports the NumPy library and prints a NumPy array. We use process.readAll() to read the output of the process and print it out.

Of course, this is just a simple example – feel free to use Python’s third-party libraries according to your own needs.

bannerAds