from PyQt5.QtWidgets import (QWidget,QApplication,QTextEdit,
    QInputDialog,QPushButton,QVBoxLayout,QProgressBar)
import sys

class Tbx(QWidget):
    def __init__(self):
        super().__init__()
        self.initUI()

    def initUI(self):
        self.vbox = QVBoxLayout()
        self.btn = QPushButton('ClickMe',self)
        self.btn.clicked.connect(self.dollar)
        self.te = QTextEdit(self)
        self.prgb = QProgressBar(self)
        self.vbox.addWidget(self.te)
        self.vbox.addWidget(self.btn)
        self.vbox.addWidget(self.prgb)
        self.setLayout(self.vbox)
        self.setGeometry(300,300,400,250)
        self.setWindowTitle('Application')
        self.show()
    def dollar(self):
        text_1_int , ok = QInputDialog.getInt(self,'HowMany?','Enter How Many dollar do you want ?')
        if not ok:
            return
        current_lines = self.te.toPlainText().split('n')
        new_lines = list()
        self.prgb.setMaximum(text_1_int + 1)
        for dollar_counter in range(1, text_1_int+1):
            word = '$'*dollar_counter
            new_lines += [word + text for text in current_lines]
            self.prgb.setValue(dollar_counter + 1)
        self.te.setPlainText('n'.join(new_lines))

if __name__ == '__main__':
    app = QApplication(sys.argv)
    ex = Tbx()
    sys.exit(app.exec_())