How do you get Python to detect for no input

Question

I\'m new to coding in python and I was filling out some code that required a number of inputs. One thing it asked for was for the program to perform an action if the user pr

Answer 1

Just another tips:

In python you don't need to do equality test for empty string. Instead please use truth value testing. That is more pythonic.

if not coinN:

Truth value testing covers the following test:

• None
• False
• zero of any numeric type, for example, 0, 0L, 0.0, 0j.
• any empty sequence, for example, '', (), [].
• any empty mapping, for example, {}.
• instances of user-defined classes, if the class defines a nonzero() or len() method, when that method returns the integer zero or bool value False. 1

Example:

>>> s = ''
>>> if not s:
...     print 's is empty'
...
s is empty
>>>