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61 lines
1.6 KiB
61 lines
1.6 KiB
class Expression:
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def __init__(self, root, left, right):
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self.root = root
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self.left = left
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self.right = right
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def evaluate(self):
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if self.root == '+':
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return self.left.evaluate() + self.right.evaluate()
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elif self.root == '*':
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return self.left.evaluate() * self.right.evaluate()
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else:
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return int(self.root)
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def __str__(self):
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if self.root in ['+', '*']:
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return f'({self.left} {self.root} {self.right})'
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else:
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return str(self.root)
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def npi2tree(npi_list):
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stack = []
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for item in npi_list:
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if item in ['+', '*']:
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right = stack.pop()
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left = stack.pop()
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stack.append(Expression(item, left, right))
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else:
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stack.append(Expression(item, None, None))
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return stack[0]
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import tkinter as tk
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def evaluate_expression():
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expression_text = entry.get()
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npi_list = expression_text.split()
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expression_tree = npi2tree(npi_list)
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result.set(expression_tree.evaluate())
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root = tk.Tk()
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root.configure(bg="orange")
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root.title("Mini Calculatrice")
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expression_label = tk.Label(root, text="Expression:")
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expression_label.pack()
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expression_label.configure(bg="beige")
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entry = tk.Entry(root)
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entry.pack()
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calculate_button = tk.Button(root, text="Calculer", command=evaluate_expression)
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calculate_button.configure(bg="beige")
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calculate_button.pack()
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result = tk.StringVar()
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result_label = tk.Label(root, textvariable=result)
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result_label.configure(bg="orange")
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result_label.pack()
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root.mainloop()
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