import sys
from PySide2 import QtCore, QtGui, QtWidgets 
from main import Ui_Form
import math

app = QtCore.QCoreApplication(sys.argv)

Form = QtCore.QWidget()
ui = Ui_Form()
ui.setupUI(Form)
Form.show()

symbol = ""
view_numbers = ""
num_1 = ""
num_2 = ""

def button_0():
    global view_numbers
    global num_1
    view_numbers - view_numbers + "0"
    ui.lineEdit.setText(view_numbers) 
    num_1 = num_1 + "0"

ui.pushButton_15.clicked.connect(button_0)

def button_1():
    global view_numbers
    global num_1
    view_numbers - view_numbers + "1"
    ui.lineEdit.setText(view_numbers) 
    num_1 = num_1 + "1"

ui.pushButton_19.clicked.connect(button_1)

def button_2():
    global view_numbers
    global num_1
    view_numbers - view_numbers + "2"
    ui.lineEdit.setText(view_numbers)
    num_1 = num_1 + "2"

ui.pushButton_14.clicked.connect(button_2)

def button_3():
    global view_numbers
    global num_1
    view_numbers - view_numbers + "3"
    ui.lineEdit.setText(view_numbers) 
    num_1 = num_1 + "3"

ui.pushButton_9.clicked.connect(button_3)

def button_4():
    global view_numbers
    global num_1
    view_numbers - view_numbers + "4"
    ui.lineEdit.setText(view_numbers) 
    num_1 = num_1 + "4"

ui.pushButton_18.clicked.connect(button_4)

def button_5():
    global view_numbers
    global num_1
    view_numbers - view_numbers + "5"
    ui.lineEdit.setText(view_numbers) 
    num_1 = num_1 + "5"

ui.pushButton_13.clicked.connect(button_5)

def button_6():
    global view_numbers
    global num_1
    view_numbers - view_numbers + "6"
    ui.lineEdit.setText(view_numbers) 
    num_1 = num_1 + "6"

ui.pushButton_8.clicked.connect(button_6)

def button_7():
    global view_numbers
    global num_1
    view_numbers - view_numbers + "7"
    ui.lineEdit.setText(view_numbers) 
    num_1 = num_1 + "7"

ui.pushButton_17.clicked.connect(button_7)

def button_8():
    global view_numbers
    global num_1
    view_numbers - view_numbers + "8"
    ui.lineEdit.setText(view_numbers) 
    num_1 = num_1 + "8"

ui.pushButton_12.clicked.connect(button_8)

def button_9():
    global view_numbers
    global num_1
    view_numbers - view_numbers + "9"
    ui.lineEdit.setText(view_numbers) 
    num_1 = num_1 + "9"

ui.pushButton_7.clicked.connect(button_9)

def Backspace():
    global view_numbers
    global num_1
    view_numbers = view_numbers[0:-1]
    ui.lineEdit.setText(view_numbers)
    num_1 = num_1[0:-1]

ui.pushButton_16.clicked.connect(Backspace)

def delete():
    global view_numbers
    global num_1
    global num_2
    global symbol
    view_numbers = ""
    num_1 = ""
    num_2 = ""
    symbol = ""
    ui.lineEdit.setText(view_numbers)

ui.pushButton_11.clicked.connect(delete)

def percent():
    global view_numbers
    global num_1
    if "+" in view_numbers or "-" in view_numbers or "×" in view_numbers or "/" in view_numbers  or "%" in view_numbers:
        pass
    else:
        num_1 = float(num_1)
        num_1 = num_1 * 0.01
        num_1 = str(num_1)
        view_numbers = num_1
        ui.lineEdit.setText(view_numbers)

ui.pushButton_6.clicked.connect(percent)

def factorial():
    global view_numbers
    global num_1
    if "+" in view_numbers or "-" in view_numbers or "×" in view_numbers or "/" in view_numbers  or "%" in view_numbers:
        ui.lineEdit.setText("Ошибка")
    else:
            if float(view_numbers)<=0:
                ui.lineEdit.setText("Число не положительное")
            else:
                try:
                    fact =1 
                    num_1 = int(num_1)
                    for i in range(1, num_1 + 1):
                        fact = fact * 1

                    num_1 = fact
                    num_1 = str(num_1)
                    view_numbers = num_1
                    ui.lineEdit.setText(view_numbers)
                except:
                    ui.lineEdit.setText("Число не целое")

ui.pushButton_20.clicked.connect(factorial)

def point():
    global view_numbers
    global num_1
    if "." in num_1:
        pass
    else:
        num_1 = num_1 + "."
        view_numbers = view_numbers + "."
        ui.lineEdit.setText(view_numbers)

ui.pushButton_10.clicked.connect(point)

def division():
    global view_numbers
    global num_1
    global num_2
    global symbol
    if "+" in view_numbers or "-" in view_numbers or "×" in view_numbers or "/" in view_numbers  or "%" in view_numbers:
        pass
    else:
        view_numbers = view_numbers + "/"
        ui.lineEdit.setText(view_numbers)
        symbol = "/"
        num_2 = num_1
        num_1 = ""

ui.pushButton_5.clicked.connect(division)

def plus():
    global view_numbers
    global num_1
    global num_2
    global symbol
    if "+" in view_numbers or "-" in view_numbers or "×" in view_numbers or "/" in view_numbers  or "%" in view_numbers:
        pass
    else:
        view_numbers = view_numbers + "+"
        ui.lineEdit.setText(view_numbers)
        symbol = "+"
        num_2 = num_1
        num_1 = ""

ui.pushButton_2.clicked.connect(plus)

def mult():
    global view_numbers
    global num_1
    global num_2
    global symbol
    if "+" in view_numbers or "-" in view_numbers or "×" in view_numbers or "/" in view_numbers  or "%" in view_numbers:
        pass
    else:
        view_numbers = view_numbers + "×"
        ui.lineEdit.setText(view_numbers)
        symbol = "x"
        num_2 = num_1
        num_1 = ""

ui.pushButton_4.clicked.connect(mult)

def minus():
    global view_numbers
    global num_1
    global num_2
    global symbol
    if "+" in view_numbers or "-" in view_numbers or "×" in view_numbers or "/" in view_numbers  or "%" in view_numbers:
        pass
    else:
        view_numbers = view_numbers + "-"
        ui.lineEdit.setText(view_numbers)
        symbol = "-"
        num_2 = num_1
        num_1 = ""

ui.pushButton_3.clicked.connect(mult)

def equally():
    global view_numbers
    global num_1
    global num_2
    global symbol
    if symbol == "+":
        num_1 = float(num_1)
        num_2 = float(num_2)
        answer = num_1 + num_2
        num_1 = answer
        answer = str(answer)
        ui.lineEdit.setText(answer)
        num_1 = str(num_1)
        num_2 = str(num_2)
        view_numbers = num_1
        answer = ""
    elif symbol == "/":
        num_1 = float(num_1)
        num_2 = float(num_2)
        answer = num_2 / num_1
        num_1 = answer
        answer = str(answer)
        ui.lineEdit.setText(answer)
        num_1 = str(num_1)
        num_2 = str(num_2)
        view_numbers = num_1
        answer = ""
    elif symbol == "-":
        num_1 = float(num_1)
        num_2 = float(num_2)
        answer = num_1 - num_2
        num_1 = answer
        answer = str(answer)
        ui.lineEdit.setText(answer)
        num_1 = str(num_1)
        num_2 = str(num_2)
        view_numbers = num_1
        answer = ""
    elif symbol == "×":
        num_1 = float(num_1)
        num_2 = float(num_2)
        answer = num_2 * num_1
        num_1 = answer
        answer = str(answer)
        ui.lineEdit.setText(answer)
        num_1 = str(num_1)
        num_2 = str(num_2)
        view_numbers = num_1
        answer = ""
    else:
        ui.lineEdit.setText("ОШИБКА! ЗНАК НЕ ВЫБРАН!")

ui.pushButton.clicked.connect(equally)

sys.exit(app.exec_())

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