コード例 #1
0
ファイル: main.py プロジェクト: quadrupleslap/quadratic
def equation_to_zero(equation):
  try:
    lhs, rhs = map(lambda expr: variables.simplify(tokenizer.gen_tokens(expr)), equation.split('='))
  except:
    raise SyntaxError('This isn\'t an equation!')

  return lhs - rhs
コード例 #2
0
ファイル: main.py プロジェクト: quadrupleslap/quadratic
  except:
    raise SyntaxError('This isn\'t an equation!')

  return lhs - rhs

def sign(n):
  return '+' if n >= 0 else '-'

def f2s(f):
  return '{:.15g}'.format(f)

equation = input('Welcome to the Polynomial Solver!\nPlease enter your polynomial below, using x to represent the roots.\n\n')

expression_count = equation.count('=')
if expression_count == 0:
  print(variables.simplify(tokenizer.gen_tokens(equation)))
elif expression_count == 1:
  coeffs = equation_to_zero(equation)

  quadratic = set(coeffs.keys()) <= {0, 1, 2}

  if set(coeffs.keys()) <= {0}:
    print(coeffs[0])

  elif quadratic:
    options = ['Solve with Quadratic Formula','Solve by Completing the Square','Find the Discriminant','Rewrite in Standard Form']

    print('\nChoose the problem type:')
    for i, option in enumerate(options): print('{}) {}'.format(i + 1, option))
    while True:
      option = input('>> ')