手把手教你使用PySimpleGUI庫打造一款輕量級(jí)計(jì)算器

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大家好，我是Python進(jìn)階者。

前言

前幾天在Python交流群里邊，【??（這是月亮的背面）】大佬分享了一個(gè)有趣的代碼，用于PySimpleGUI庫打造了一款簡易計(jì)算器，覺得挺有意思，非常適合入門PySimpleGUI的小伙伴們學(xué)習(xí)，這里拿出來給大家分享一波。

實(shí)現(xiàn)過程

這里直接上代碼，如下所示：

import?PySimpleGUI?as?sg


#?定義主窗口布局，確定行數(shù)
def?window_main():
????layout?=?[
????????[sg.Text('計(jì)算結(jié)果：',?font=("微軟雅黑",?10)),?sg.Button('歷史記錄',?font=("微軟雅黑",?10),?pad=(10,?1))],
????????[sg.Text('0',?key='-express-',?justification='right',?size=(30,?1),?font=("微軟雅黑",?10),?background_color='#fff',?text_color='#000')],
????????[sg.Text('0',?key='-result-',?justification='right',?size=(30,?1),?font=("微軟雅黑",?10),?background_color='#fff',?text_color='#000')],
????????[sg.Button('清空',?size=(6,?2)),?sg.Button('刪除',?size=(6,?2)),?sg.Button('x2',?size=(6,?2)),?sg.Button('÷',?size=(6,?2))],
????????[sg.Button('7',?size=(6,?2)),?sg.Button('8',?size=(6,?2)),?sg.Button('9',?size=(6,?2)),?sg.Button('x',?size=(6,?2))],
????????[sg.Button('4',?size=(6,?2)),?sg.Button('5',?size=(6,?2)),?sg.Button('6',?size=(6,?2)),?sg.Button('-',?size=(6,?2))],
????????[sg.Button('1',?size=(6,?2)),?sg.Button('2',?size=(6,?2)),?sg.Button('3',?size=(6,?2)),?sg.Button('+',?size=(6,?2))],
????????[sg.Button('+/-',?size=(6,?2)),?sg.Button('0',?size=(6,?2)),?sg.Button('.',?size=(6,?2)),?sg.Button('=',?size=(6,?2))],
????]

????#?創(chuàng)建窗口
????return?sg.Window('簡易計(jì)算器@月亮',?layout,?finalize=True,?default_element_size=(50,?1))

#?定義歷史記錄窗口布局
def?createwindow_history(history_list=None):
????history_text?=?''
????if?history_list:
????????history_text?=?'\n'.join(['='.join(i)?for?i?in?history_list])
????layout?=?[
????????[sg.Text('歷史記錄：',?font=("微軟雅黑",?10))],
????????[sg.Multiline(history_text,?justification='right',?disabled=True,?autoscroll=True,?size=(30,?10),?font=("微軟雅黑",?10),?background_color='#fff',?text_color='#000')]
????]
????return?sg.Window('歷史記錄',?layout,?finalize=True)


def?get_result(eval_str):
????global?result
????eval_str?=?eval_str.replace('^',?'**').replace('x',?'*').replace('÷',?'/')
????try:
????????result?=?eval(eval_str)
????except?Exception?as?e:
????????result?=?'0'
????window_main['-result-'].update(result)
????return?str(result)


window_main?=?window_main()
window_sub?=?None
history_list?=?[]
express?=?'0'
result?=?'0'
flag?=?0

while?True:
????window,?event,?value?=?sg.read_all_windows()
????if?window?==?window_main?and?event?in?(None,?sg.WIN_CLOSED):
????????if?window_sub?is?not?None:
????????????window_sub.close()
????????break
????elif?event?==?'歷史記錄':
????????if?not?window_sub:
????????????window_sub?=?createwindow_history(history_list)
????????else:
????????????window_sub.close()
????????????window_sub?=?None
????elif?window?==?window_sub?and?event?is?None:
????????window_sub.close()
????????window_sub?=?None
????elif?event?==?'=':
????????express1?=?express
????????express?=?get_result(express)
????????history_list.append([express1,?express])
????????flag?=?1
????elif?event?==?'清空':
????????express?=?'0'
????????result?=?'0'
????????window_main['-express-'].update(express)
????????window_main['-result-'].update(result)
????elif?event?==?'刪除':
????????if?len(express.lstrip('-').strip('(').strip(')'))?==?1:
????????????express?=?'0'
????????elif?express[-1]?==?')':
????????????express?=?express.lstrip('-').strip('(').strip(')')
????????else:
????????????express?=?express[:-1]
????????window_main['-express-'].update(express)
????elif?event?==?'x2':
????????express?=?f'({express})?^?2'
????????window_main['-express-'].update(express)
????elif?event?==?'+/-':
????????express?=?f'-({express})'
????????get_result(express)
????else:
????????if?flag?==?1?and?event?in?'0123456789':
????????????express?=?'0'
????????????flag?=?0
????????if?express?==?'0':
????????????express?=?event
????????else:
????????????express?=?express?+?event
????????window_main['-express-'].update(express)

window.close()

代碼運(yùn)行之后，一款建議計(jì)算器就已經(jīng)浮現(xiàn)在眼前了。

之后你可以自己做點(diǎn)簡單的加減乘除等計(jì)算，都是可以的，也支持清除，查看歷史記錄功能等等。

總結(jié)

大家好，我是Python進(jìn)階者。這篇文章主要基于PySimpleGUI庫，打造了一款輕量級(jí)計(jì)算器，實(shí)現(xiàn)計(jì)算器的相關(guān)功能。

最后感謝【??（這是月亮的背面）】大佬的代碼分享，也歡迎大家積極嘗試，有好的內(nèi)容也可以分享給我噢！