Пайтон. Программа for while

 while True:

    n, f = int(input('n: ')), 1

    for i in range(1, n + 1):

        f *= i; print('%2d)' % i, f) 

 import decimal; d=decimal.Decimal 

while True: 

    n = int(input('Знаков после запятой ? ')) 

    decimal.getcontext().prec = n + 20 

    a, b, p, q, e, x, y = d(16) / 5, d(-4) / 239, 1, 1, d(1), 1, 1 

    eps,u = d('1e-'+str(n + 2)),a + b 

    for i in range(1, 10000000): 

	p *= -25; q *= -57121; r = 2 * i + 1 

	x += e / (r * p); y += e / (r * q) 

	v = a * x + b * y 

	if abs(u - v) < eps: break 

	u = v 

    print(str(u)[:(n + 2)]) 

 letters = [chr(i) for i in range(ord('a'), ord('f') + 1)]    

nums = [i for i in range(10, 16)]    

    

def to_letter(res):        

    final = []    

    for i in res:    

        if i in nums:  final += letters[nums.index(i)]    

        else: final += str(i)    

    return final    

    

def int_part(n):        

    result = []    

    if not n: return '0x0'        

    while n > 0:    

        result += [n % 16]    

        n //= 16    

    a = to_letter(result)    

    return ' '.join(['0x' + ''.join((a[::-1]))])    

    

    

def float_part(f):    

    result,i = [],0        

    while f - int(f) or i < 11:    

        f *= 16    

        result.append(int(f))    

        f = f - int(f)    

        i += 1    

    a = to_letter(result)    

    return ''.join(a)    

    

try:    

    decimal = input('DEC ')    

    decimal = (float(decimal) if '.' in decimal   

and decimal[0] != '.' and decimal[-1] != '.' else int(decimal))        

    if isinstance(decimal, int): print('HEX', int_part(decimal))    

    if isinstance(decimal, float):    

        float_p = decimal - int(decimal)    

        int_p = int(decimal)    

        print('HEX', int_part(int_p) + '.' + float_part(float_p))    

except ValueError: print('Wrong input')