def atoif(nb):
try:
return int(nb)
except ValueError:
try:
return float(nb)
except ValueError:
display.quit('Invalid Syntax, use the following form : a*x^p')
def get_reduce_form(original_str):
reduced_str = re.sub(r'\s+', '', original_str).replace('x', 'X')
splitted_str = reduced_str.split('=')
if not reduced_str or len(splitted_str) != 2:
display.quit('Invalid Syntax, use the following form : a*x^p')
data = extract_data(splitted_str, reduced_str, original_str)
reduced_data = reduce_data(data['degrees'], data['numbers'])
tools.check_special_case(reduced_data, data)
display.reduced_form_and_polynomial_degree(reduced_data, data)
tools.check_data_before_processing(data, reduced_data)
return reduced_data, max(reduced_data.keys())
def check_syntax(args, checker, elem_nb, check_sign):
check = len(checker) + check_sign
base = len(args)
case1 = re.findall(r'-?\d*\.?\d*\*X\^-?\d*\.?\d+=-?\d*\.?\d*\*X\^-?\d*\.?\d+', args)
case2 = re.findall(r'-?\d*\.?\d*\*X\^-?\d*\.?\d+=0', args)
if case1 or case2:
check += 1 + (elem_nb - 2) if case1 else 2 + (elem_nb - 1)
else:
display.quit('Invalid Syntax, use the following form : a*x^p')
if args[0] == '-':
check += 1
if args[args.index('=') + 1] == '-':
check += 1
if check != base:
display.quit('Invalid Syntax, use the following form : a*x^p')
def check_data_before_processing(data, reduced_data):
max_degree = max(reduced_data.keys())
min_degree = min(reduced_data.keys())
if max_degree == 0 and min_degree == 0:
display.quit("\n\tThere is no solution for this equation.\n")
elif max_degree > 2 and type(max_degree) == int:
display.quit("\n\tThe polynomial degree is stricly greater than 2, I can't solve.\n")
elif min_degree < 0 and type(min_degree) == int:
display.quit("\n\tOne of the polynomial degree is negative, I can't solve.\n")
for degree in reduced_data.keys():
if type(degree) == float:
display.quit("\n\tOne of the polynomial degree isn't an integer, I can't solve.\n")
def check_special_case(reduced_data, data):
if not reduced_data or data['left_side']['degrees'] == data['right_side']['degrees'] and data['left_side']['numbers'] == data['right_side']['numbers']:
display.quit("\n\tReduced form: 0 = 0\n\n\tThis is a special case, all real numbers are true for this equation.\n")