lab2 python

from math import sqrt as rad
def sign(x):
        if x > 0: return 1.
        if x < 0: return -1.
        if x == 0: return 0.
def getnr(name):
        r = input(name + "=")
        t = str(type(r))
        if t == "<type 'int'>" or t == "<type 'float'>":
                return float(r)
        while t != "<type 'int'>" and t != "<type 'float'>":
                print("singur int sau float");
                r = input (name + "=");
                t = str(type(r));
        if t == "<type 'int'>" or t == "<type 'float'>":
                return float(r)
def getComplex(name):
        r = input(name + "=")
        t = str(type(r))
        if t == "<type 'int'>" or t == "<type 'float'>" or t == "<type 'complex'>":
                return complex(r)
        while t != "<type 'int'>" and t != "<type 'int'>" and t != "<type 'complex'>"
                print "complex"
                r = input(name + "=")
                t = str(type(r))
                if t == "<type 'int'>" or t == "<type 'float'>" or t == "<type 'complex'>":
                        return complex(r)

def ecgrad2():
        print "Ecuatia de gradul 2"
        a = getnr('a')
        b = getnr('b')
        c = getnr('c')
        delta = b * b - 4 * a * c
          if a == 0:
                print "Ecuatie de gradul 1"
                return
        if delta == 0:
                print str(-b/(2*a))
                return
        if delta > 0:
                x1 = -b + rad(delta) / 2 * a
                x2 = -b - rad(delta) / 2 * a
                print str(x1)
                print str(x2)
                return
        if delta < 0:
                x1 = complex(-b, -rad(-delta))/ (2*a)
                print str(x1)
                x2 = complex(-b, rad(-delta)) / (2*a)
                print str(x2)
                return

print(sign(-2))

ecgrad2();