Initial commit

.idea/.gitignore

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+# Default ignored files
+/shelf/
+/workspace.xml
+# Editor-based HTTP Client requests
+/httpRequests/
+# Datasource local storage ignored files
+/dataSources/
+/dataSources.local.xml

.idea/MvcTaschenrechner.iml

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+<?xml version="1.0" encoding="UTF-8"?>
+<module type="PYTHON_MODULE" version="4">
+  <component name="NewModuleRootManager">
+    <content url="file://$MODULE_DIR$">
+      <excludeFolder url="file://$MODULE_DIR$/venv" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

.idea/inspectionProfiles/profiles_settings.xml

@@ -0,0 +1,6 @@
+<component name="InspectionProjectProfileManager">
+  <settings>
+    <option name="USE_PROJECT_PROFILE" value="false" />
+    <version value="1.0" />
+  </settings>
+</component>

.idea/misc.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectRootManager" version="2" project-jdk-name="Python 3.10 (MvcTaschenrechner) (2)" project-jdk-type="Python SDK" />
+</project>

.idea/modules.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/.idea/MvcTaschenrechner.iml" filepath="$PROJECT_DIR$/.idea/MvcTaschenrechner.iml" />
+    </modules>
+  </component>
+</project>

controller.py

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+from model import Model
+from view import View
+
+
+class Controller:
+    def __init__(self):
+        self.model = Model()
+        self.view = View(self)
+
+    def main(self):
+        self.view.main()
+
+    def on_button_click(self, caption):
+        result = self.model.calculate(caption)
+
+        self.view.value_var.set(result)
+
+
+if __name__ == '__main__':
+    calculator = Controller()
+    calculator.main()

model.py

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+'''
+Created on Jun 03, 2022
+
+@author: error042
+'''
+
+class Model:
+    '''
+    classdocs
+    '''
+
+    def __init__(self):
+        '''
+        Constructor
+        '''
+        self.previous_value = ''
+        self.value = ''
+        self.operator = ''
+
+    def calculate(self, caption):
+        if caption == 'C':
+            self.value = ''
+
+        elif caption == '+/-':
+            self.value = self.value[1:] if self.value[0] == '-' else '-' + self.value
+
+        elif caption == '.':
+            if not caption in self.value:
+                self.value += caption
+            elif self.value[-1] == caption:
+                self.value = self.value[:-1]
+
+        elif caption == '%':
+            self.operator = '/'
+            self.previous_value = self.value
+            self.value = '100'
+            self.value = str(self._evaluate())
+
+        elif caption == '=':
+            self.value = str(self._evaluate())
+
+        elif isinstance(caption, int):
+            self.value += str(caption)
+
+        else:
+            if self.value:
+                self.operator = caption
+                self.previous_value = self.value
+                self.value = ''
+
+        return self.value
+
+    def _evaluate(self):
+        return eval(self.previous_value+self.operator+self.value)

view.py

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+'''
+Created on Jun 03, 2022
+
+@author: error042
+'''
+import tkinter as tk
+from tkinter import ttk
+
+
+class View(tk.Tk):
+    '''
+    classdocs
+    '''
+
+    PAD = 10
+    MAX_BUTTONS_PER_ROW = 4
+    button_captions = [
+        'C', '+/-', '%', '/',
+        7, 8, 9, '*',
+        4, 5, 6, '-',
+        1, 2, 3, '+',
+        0, '.', '='
+    ]
+
+    def __init__(self, controller):
+        '''
+        Constructor
+        '''
+        super().__init__()
+
+        self.title('PyCalc')
+
+        self.controller = controller
+
+        self.value_var = tk.StringVar()
+
+        self._make_main_frame()
+        self._make_entry()
+        self._make_buttons()
+
+    def main(self):
+        self.mainloop()
+
+    def _make_main_frame(self):
+        self.main_frm = ttk.Frame(self)
+        self.main_frm.pack(padx=self.PAD, pady=self.PAD)
+
+    def _make_entry(self):
+        ent = ttk.Entry(self.main_frm, justify='right', textvariable=self.value_var, state='readonly')
+        ent.pack(fill='x')
+
+    def _make_buttons(self):
+        outer_frm = ttk.Frame(self.main_frm)
+        outer_frm.pack()
+
+        frm = ttk.Frame(outer_frm)
+        frm.pack()
+
+        for buttons_in_row, caption in enumerate(self.button_captions):
+            if buttons_in_row % self.MAX_BUTTONS_PER_ROW == 0:
+                frm = ttk.Frame(outer_frm)
+                frm.pack()
+
+            btn = ttk.Button(
+                frm, text=caption, command=(
+                    lambda button=caption: self.controller.on_button_click(button)
+                )
+            )
+            btn.pack(side='left')