How do you read from stdin?

Question

I\'m trying to do some of the code golf challenges, but they all require the input to be taken from stdin. How do I get that in Python?

Answer 1

I use the following method, it returns a string from stdin (I use it for json parsing). It works with pipe and prompt on Windows (not tested on Linux yet). When prompting, two line breaks indicate end of input.

def get_from_stdin():

  lb = 0
  stdin = ''

  for line in sys.stdin:
    if line == "\n":
        lb += 1
        if lb == 2:
            break
    else:
        lb = 0
        stdin += line

  return stdin