def doEvaluate(): eva = Evaluate() eva.eval()
class Operations: position = 0 result = '' memory = '' def __init__(self, results, button=""): self.results = results self.button = button self.evaluate = Evaluate() def operation(self): if self.button == 'x': self.button = '*' self.results.insert(1.0 + Operations.position, self.button) Operations.position += 1 def calculate(self): Operations.result = self.getResult() result = self.evaluate.eval(Operations.result) if (result is None): self.setResult(Operations.result) else: self.setResult(result) def delete_all(self): self.results.delete(1.0, 'end') def add_memory(self): Operations.memory = self.results.get(1.0, 'end') self.results.delete(1.0, 'end') def display_memory(self): self.results.insert(1.0 + (Operations.i / 10), Operations.memory) def delete_memory(self): Operations.memory = '' def delete_last_digit(self): Operations.result = self.getResult() Operations.result = Operations.result[:-1] self.setResult(Operations.result) def power2(self): Operations.result = self.getResult() Operations.result = float(Operations.result) * float(Operations.result) self.setResult(Operations.result) def square_root(self): Operations.result = self.getResult() Operations.result = sqrt(float(Operations.result)) self.setResult(Operations.result) def plus_minus(self): Operations.result = self.getResult() Operations.result = float(Operations.result) * (-1) self.setResult(Operations.result) def getResult(self): result = self.results.get(1.0, 'end') return result.strip() def setResult(self, result): self.results.delete(1.0, 'end') self.results.insert(1.0, result)