Python使用PySimpleGUI打造轻量级计算器

pip install pysimplegui

import PySimpleGUI as sg  
  
# 定义窗口的布局  
layout = [  
    [sg.Text('Calculator', size=(20, 1), justification='center', font=("Helvetica", 25))],  
    [sg.Input(size=(20, 1), enable_events=True, key='-INPUT-')],  
    [sg.Button('7'), sg.Button('8'), sg.Button('9'), sg.Button('/')],  
    [sg.Button('4'), sg.Button('5'), sg.Button('6'), sg.Button('*')],  
    [sg.Button('1'), sg.Button('2'), sg.Button('3'), sg.Button('-')],  
    [sg.Button('0'), sg.Button('.'), sg.Button('+'), sg.Button('=')],  
    [sg.Button('C')]  
]  
  
# 创建窗口  
window = sg.Window('Calculator', layout)  
  
# 事件循环  
while True:  
    event, values = window.read()  
    if event == sg.WIN_CLOSED or event == 'C':  # 如果点击了窗口的关闭按钮或'C'按钮  
        break  
    print('You entered ', values['-INPUT-'])  # 打印输入框的内容  
  
window.close()

import PySimpleGUI as sg  
import operator  
  
# 定义运算符及其对应的函数  
operators = {  
    '+': operator.add,  
    '-': operator.sub,  
    '*': operator.mul,  
    '/': operator.truediv  
}  
  
# 初始化计算器的状态  
calculator = {  
    'result': 0,  
    'operation': None,  
    'operand': None  
}  
  
# 定义计算器的回调函数  
def evaluate(event, values, calculator):  
    if calculator['operation'] is None:  
        calculator['operand'] = float(values['-INPUT-'])  
        calculator['operation'] = operators[event]  
        window['-INPUT-'].update('')  
    else:  
        calculator['result'] = calculator['operation'](calculator['result'], float(values['-INPUT-']))  
        calculator['operation'] = None  
        window['-INPUT-'].update(str(calculator['result']))  
  
def clear(event, values, calculator):  
    calculator['result'] = 0  
    calculator['operation'] = None  
    calculator['operand'] = None  
    window['-INPUT-'].update
 
 
 
 
#定义窗口的布局
layout = [
[sg.Text('Calculator', size=(20, 1), justification='center', font=("Helvetica", 25))],
[sg.Input(size=(20, 1), enable_events=True, key='-INPUT-')],
[sg.Button('7', key='7'), sg.Button('8', key='8'), sg.Button('9', key='9'), sg.Button('/', key='/')],
[sg.Button('4', key='4'), sg.Button('5', key='5'), sg.Button('6', key='6'), sg.Button('', key='')],
[sg.Button('1', key='1'), sg.Button('2', key='2'), sg.Button('3', key='3'), sg.Button('-', key='-')],
[sg.Button('0', key='0'), sg.Button('.', key='.'), sg.Button('+', key='+'), sg.Button('=', key='=')],
[sg.Button('C', key='C')]
]
 
#创建窗口
window = sg.Window('Calculator', layout)
 
事件循环
while True:
event, values = window.read()
if event == sg.WIN_CLOSED or event == 'C':
break
elif event in operators:
evaluate(event, values, calculator)
elif event == '=':
if calculator['operation'] is not None:
calculator['result'] = calculator['operation'](calculator['result'], float(values['-INPUT-']))
window['-INPUT-'].update(str(calculator['result']))
calculator['operation'] = None
elif event.isdigit() or event == '.':
if calculator['operation'] is None:
window['-INPUT-'].update(window['-INPUT-'].get() + event)
else:
print('Please complete the previous operation first.')
 
window.close()