{"id":28633,"date":"2023-01-01T12:57:00","date_gmt":"2023-01-01T07:27:00","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-i-cant-use-the-equals-or-the-enter-key-on-my-keyboard-to-get-an-answer-for-anything-duplicate\/"},"modified":"2023-01-01T12:57:00","modified_gmt":"2023-01-01T07:27:00","slug":"solved-i-cant-use-the-equals-or-the-enter-key-on-my-keyboard-to-get-an-answer-for-anything-duplicate","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-i-cant-use-the-equals-or-the-enter-key-on-my-keyboard-to-get-an-answer-for-anything-duplicate\/","title":{"rendered":"[Solved] i cant use the equals or the enter key on my keyboard to get an answer for anything [duplicate]"},"content":{"rendered":"

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To call a the same function as a button press on a keypress you have to bind keypress to you GUI. <\/p>\n

Example<\/p>\n

try:\n    # for Python2\n    from Tkinter import *\nexcept ImportError:\n    # for Python3\n    from tkinter import *\n\n\nclass GUI(Frame):\n\n    # Create and return a packed frame.\n    def frame(self, side): \n        w = Frame(self)\n        w.pack(side=side, expand=YES, fill=BOTH)\n        return w\n\n    # Create and return a button.\n    def button(self, root, side, text, command=None): \n        w = Button(root, text=text, command=command) \n        w.pack(side=side, expand=YES, fill=BOTH)\n        return w\n\n    def hello(self):\n        self.display.set('hello')\n\n    def keyPressed(self,event):\n        #test to see whether enetr is pressed\n        if event.keysym == 'Return':\n            self.hello()\n    def __init__(self):\n        Frame.__init__(self)\n        self.option_add('*Font', 'Verdana 12 bold')\n        self.pack(expand=YES, fill=BOTH)\n        self.master.title('Simple GUI')\n\n        # The StringVar() object holds the value of the Entry.\n        self.display = StringVar()\n        e = Entry(self, relief=SUNKEN, textvariable=self.display)\n        e.pack(side=TOP, expand=YES, fill=BOTH)\n\n\n        # Clear button.\n        clearF = self.frame(BOTTOM)\n        self.hello_button = self.button(clearF, LEFT, 'Hello', self.hello)\n        #bind keypresses\n        self.bind_all('<Key>', self.keyPressed)\n\n\nif __name__ == '__main__':\n GUI().mainloop()\n<\/code><\/pre>\n
for this specific example the folowing code shoulod work:<\/p>\n
try:\n    # for Python2\n    from Tkinter import *\nexcept ImportError:\n    # for Python3\n    from tkinter import *\n    # Calculator is a class derived from Frame.  Frames, being someone generic,\n    # make a nice base class for whatever you what to create.\n# Calculator is a class derived from Frame.  Frames, being someone generic,\n        # make a nice base class for whatever you what to create.\nclass Calculator(Frame):\n\n    # Create and return a packed frame.\n    def frame(this, side): \n        w = Frame(this)\n        w.pack(side=side, expand=YES, fill=BOTH)\n        return w\n\n    def keyPressed(self,event):\n        #test to see whether enetr is pressed\n        if event.keysym == 'Return':\n            self.calc()\n\n    # Create and return a button.\n    def button(this, root, side, text, command=None): \n        w = Button(root, text=text, command=command) \n        w.pack(side=side, expand=YES, fill=BOTH)\n        return w\n\n    # Enter a digit.\n    need_clr = False\n    def digit(self, digit):\n        if self.need_clr:\n            self.display.set('')\n            self.need_clr = False\n        self.display.set(self.display.get() + digit)\n\n    # Change sign.\n    def sign(self):\n        need_clr = False\n        cont = self.display.get()\n        if len(cont) > 0 and cont[0] == '-':\n            self.display.set(cont[1:])\n        else:\n            self.display.set('-' + cont)\n\n    # Decimal\n    def decimal(self):\n        self.need_clr = False\n        cont = self.display.get()\n        lastsp = cont.rfind(' ')\n        if lastsp == -1:\n            lastsp = 0\n        if cont.find('.',lastsp) == -1:\n            self.display.set(cont + '.')\n\n    # Push a function button.\n    def oper(self, op):\n        self.display.set(self.display.get() + ' ' + op + ' ')\n        self.need_clr = False\n\n    # Calculate the expressoin and set the result.\n    def calc(self):\n        try:\n            self.display.set(eval(self.display.get()))\n            self.need_clr = True\n        except:\n            showerror('Operation Error', 'Illegal Operation')\n            self.display.set('')\n            self.need_clr = False\n\n    def __init__(self):\n        Frame.__init__(self)\n        self.option_add('*Font', 'Verdana 12 bold')\n        self.pack(expand=YES, fill=BOTH)\n        self.master.title('Simple Calculator')\n\n        # The StringVar() object holds the value of the Entry.\n        self.display = StringVar()\n        e = Entry(self, relief=SUNKEN, textvariable=self.display)\n        e.pack(side=TOP, expand=YES, fill=BOTH)\n\n        # This is a nice loop to produce the number buttons.  The Lambda\n        # is an anonymous function.\n        for key in (\"123\", \"456\", \"789\"):\n            keyF = self.frame(TOP)\n            for char in key:\n                self.button(keyF, LEFT, char,\n                            lambda c=char: self.digit(c))\n\n        keyF = self.frame(TOP)\n        self.button(keyF, LEFT, '-', self.sign)\n        self.button(keyF, LEFT, '0', lambda ch=\"0\": self.digit(ch))\n        self.button(keyF, LEFT, '.', self.decimal)\n\n        # The frame is used to hold the operator buttons.\n        opsF = self.frame(TOP)\n        for char in \"+-*\/=\":\n            if char == '=':\n                btn = self.button(opsF, LEFT, char, self.calc)\n            else:\n                btn = self.button(opsF, LEFT, char, \n                                  lambda w=self, s=char: w.oper(s))\n\n        # Clear button.\n        clearF = self.frame(BOTTOM)\n        self.button(clearF, LEFT, 'Clr', lambda w=self.display: w.set(''))\n        self.bind_all('<Key>', self.keyPressed)\n     # Make a new function for the - sign.  Maybe for . as well.  Add event\n     # bindings for digits to call the button functions.\n\n     # This allows the file to be used either as a module or an independent\n     # program.\nif __name__ == '__main__':\n    Calculator().mainloop()\n<\/code><\/pre>\n<\/p><\/div>\n
<\/div>\n<\/div>\n
            7<\/span> <\/p><\/div>\n<\/div>\n
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solved i cant use the equals or the enter key on my keyboard to get an answer for anything [duplicate] <\/p>\n","protected":false},"excerpt":{"rendered":"
[ad_1] To call a the same function as a button press on a keypress you have to bind keypress to you GUI. Example try: # for Python2 from Tkinter import * except ImportError: # for Python3 from tkinter import * class GUI(Frame): # Create and return a packed frame. def frame(self, side): w = Frame(self) … Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[320],"tags":[349,768],"class_list":["post-28633","post","type-post","status-publish","format-standard","hentry","category-solved","tag-python","tag-tkinter"],"yoast_head":"\n[Solved] i cant use the equals or the enter key on my keyboard to get an answer for anything [duplicate] - JassWeb<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/jassweb.com\/solved\/solved-i-cant-use-the-equals-or-the-enter-key-on-my-keyboard-to-get-an-answer-for-anything-duplicate\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] i cant use the equals or the enter key on my keyboard to get an answer for anything [duplicate] - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] To call a the same function as a button press on a keypress you have to bind keypress to you GUI. 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