Python - Float doesn't equal the same float?

Question

So I have this:

import random

rand=random.random()
print rand

inp = raw_input("Enter your guess: ")
print float(inp)

try:
  if float(inp)==rand:
    print "equal"
  else:
    print "not equal"
except:
  print "error"

However it says it isn't equal. I know this is due to floating point inaccuracy, but how can I as a user input what come out to be equal?

Answer 1

Because you are using print on your float, it displays in a "nicer-looking" format that omits some decimal places. You can do print repr(rand) to show all the digits:

>>> rand = random.random()
>>> print rand
0.004312203809
>>> print repr(rand)
0.004312203809001436

If you use the latter form and then type all those numbers, you can get it to recognize the floats as equal.

Answer 2

Even you can use repr property

import random

rand=random.random()
print rand.__repr__()

inp = raw_input("Enter your guess: ")

print float(inp).__repr__()

try:
   if float(inp)==rand:
       print "equal"
   else:
       print "not equal"
except:
       print "error"