import sys
from PyQt5.QtWidgets import QApplication, QMainWindow, QPlainTextEdit
if __name__ == '__main__':
app = QApplication(sys.argv)
main_window = QMainWindow()
# Create text entry box
text_edit_widget = QPlainTextEdit()
# Change font, colour of text entry box
text_edit_widget.setStyleSheet(
"""QPlainTextEdit {background-color: #333;
color: #00FF00;
text-decoration: underline;
font-family: Courier;}""")
# "Central Widget" expands to fill all available space
main_window.setCentralWidget(text_edit_widget)
# Print text to console whenever it changes
text_edit_widget.textChanged.connect(
lambda: print(text_edit_widget.document().toPlainText()))
# Set initial value of text
text_edit_widget.document().setPlainText("Type text in here")
main_window.show()
# Start event loop
sys.exit(app.exec_())