Python expected an indented block

Question

I am a newbie to Python and would like to genereate some numbers according to geometric distribution. i found this code on Internet but isn´t work:

  import          


        

Answer 1

In Python, indentation is significant. PEP 8 covers good indentation style.

To take one of your functions as an example, it should look like this:

def geometric(p):
    # p should be in (0.0, 1.0].
    if ((p <= 0.0) or (p >=1.0)):
        raise ValueError("p must be in the interval (0.0, 1.0]")
    elif p == 1.0:
        # If p is exactly 1.0, then the only possible generated value is 1.
        # Recognizing this case early means that we can avoid a log(0.0) later.
        # The exact floating point comparison should be fine. log(eps) works just
        # dandy.
        return 1

If it's not indented properly, it's not valid Python code.