Question

Question 3 [10]
Create an application using PyQt. The user is prompted for the name of an animal rescue service. This must be displayed in the UI in capital letters. The user is then required to enter a character (letter). This must also be displayed on the UI in capital letters. The application must read the name of the animal rescue service as well as the character and then count the number of occurrences of the character in the animal rescue service name. The count must be displayed.
Required:
 Screenshot of the Animalxxxxxxxx.py program.
 Ensure that the screenshot shows your file name that includes your student number!
 Screenshot of output.
 Screen shot of the object inspector (all components named).
 Code: Input.
 Code: Result.
 Comments (at least 3)
 Error message for incorrect input from user (e.g. no name of animal rescue service).
 Error message of character not found or the character is blank!

Answer 1

Note: Done accordingly. Please comment for any problem. Please Uprate. Thanks.

Code:

import sys
from PyQt5 import QtCore, QtWidgets
from PyQt5.QtWidgets import QMainWindow, QLabel, QGridLayout, QWidget,QLineEdit,QInputDialog,QMessageBox
from PyQt5.QtCore import QSize

def getText(self,prompt):
text, okPressed = QInputDialog.getText(self, "Get text",prompt+":", QLineEdit.Normal, "")
if okPressed and text != '':
return text
else:
QMessageBox.about(self, "Error", "Input should not be empty")
exit()
  
class HelloWindow(QMainWindow):
def __init__(self):
QMainWindow.__init__(self)

self.setMinimumSize(QSize(200, 200))
self.setWindowTitle("Animal Rescue Service")
centralWidget = QWidget(self)
self.setCentralWidget(centralWidget)   

gridLayout = QGridLayout(self)   
centralWidget.setLayout(gridLayout)
name=getText(self,"Please give animal rescue service name")
name=name.upper()
title = QLabel(name, self)
title.setAlignment(QtCore.Qt.AlignCenter)
gridLayout.addWidget(title, 0, 0)
char=getText(self,"Please give character to count")
occurence = name.lower().count(char)
if occurence==0:
QMessageBox.about(self, "Error", "Character not found")
else:
charInp = QLabel("Total occurence :"+str(occurence), self)
charInp.setAlignment(QtCore.Qt.AlignCenter)
gridLayout.addWidget(charInp, 1, 0)

if __name__ == "__main__":
app = QtWidgets.QApplication(sys.argv)
mainWin = HelloWindow()
mainWin.show()
sys.exit( app.exec_() )

Program screenshot:

Output: