Hello everyone!

I have a folder TreeView on the left layout and I want to drag a .txt file from there and drop it to the other layout. Hopefully, I want to load the data of that dropped file on a variable.
For the code’s needs, I used till now (to my “real” code) the np.loadtxt() to load the data, so I’d like to use it here too.
In case it matters, the .txt file contains 4 columns (coordinates).

I post my code. The program closes when I drop the file.

Thanks in advance!

Qt Code: 
  1. import sys, time, os
  2.  
  3. from PyQt5.QtWidgets import *
  4. from PyQt5.QtGui import *
  5. from PyQt5.QtCore import *
  6.  
  7. import numpy as np
  8. import pylab as pl
  9.  
  10. import random
  11.  
  12. class Example(QMainWindow):
  13.  
  14.     def __init__(self):
  15.         super().__init__()
  16.  
  17.         self.initUI()
  18.  
  19.  
  20.     def initUI(self):
  21.  
  22.         self.central_widget = QWidget()
  23.         self.setCentralWidget(self.central_widget)
  24.  
  25.  
  26.         self.folderLayout = QWidget();
  27.  
  28.         self.pathRoot = QDir.rootPath()
  29.  
  30.         self.dirmodel = QFileSystemModel(self)
  31.         self.dirmodel.setRootPath(QDir.currentPath())
  32.  
  33.         self.indexRoot = self.dirmodel.index(self.dirmodel.rootPath())
  34.  
  35.         self.folder_view = QTreeView();
  36.         self.folder_view.setDragEnabled(True)
  37.         self.folder_view.setModel(self.dirmodel)
  38.         self.folder_view.setRootIndex(self.indexRoot)
  39.  
  40.         self.selectionModel = self.folder_view.selectionModel()
  41.  
  42.         self.left_layout = QVBoxLayout()
  43.         self.left_layout.addWidget(self.folder_view)
  44.  
  45.         self.folderLayout.setLayout(self.left_layout)        
  46.  
  47.         splitter_filebrowser = QSplitter(Qt.Horizontal)
  48.         splitter_filebrowser.addWidget(self.folderLayout)
  49.         splitter_filebrowser.addWidget(Figure_Canvas(self))
  50.         splitter_filebrowser.setStretchFactor(1, 1)
  51.  
  52.         hbox = QHBoxLayout(self)
  53.         hbox.addWidget(splitter_filebrowser)
  54.  
  55.         self.centralWidget().setLayout(hbox)
  56.  
  57.  
  58.         self.setWindowTitle('Simple drag & drop')
  59.         self.setGeometry(750, 100, 600, 500)
  60.  
  61.  
  62.  
  63. class Figure_Canvas(QWidget):
  64.  
  65.     def __init__(self, parent):
  66.         super().__init__(parent)
  67.  
  68.         self.setAcceptDrops(True)
  69.  
  70.         blabla = QLineEdit()
  71.  
  72.         self.right_layout = QVBoxLayout()
  73.         self.right_layout.addWidget(blabla)
  74.  
  75.  
  76.         self.buttonLayout = QWidget()
  77.         self.buttonLayout.setLayout(self.right_layout)
  78.  
  79.     def dragEnterEvent(self, e):
  80.  
  81.         if e.mimeData().hasFormat('text/uri-list'):
  82.             e.accept()
  83.         else:
  84.             e.ignore() 
  85.  
  86.     def dropEvent(self, e):
  87.  
  88.         print("something")
  89.         data = np.loadtxt(e.mimeData())
  90.         print(data)
  91.  
  92.  
  93. if __name__ == '__main__':
  94.  
  95.     app = QApplication(sys.argv)
  96.     ex = Example()
  97.     ex.show()
  98.     app.exec_()
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