Script to copy standard input to standard output.
Python comparisons are unusual in that chaining comparisons is allowed, and works reasonably. Chained comparisons translate to a series of anded terms, repeating the middle. For instance, a < b == c <= d is interpreted as a < b and b == c and c <= d. The only other note is that the middle expression (4 in the below example) is evaluated only once. For a constant, this doesn’t matter, but it will make a difference for expressions which have a side-effect. Note that this does not always have the desired effect. For instance, 3 != 2 != 3 is true, which might not be what you wanted.
With the while loop we can execute a set of statements as long as a condition is true.
This post will show how you can make a small and easy-to-use port scanner program written in Python. There are many ways of doing this with Python, but we’re going to do it using the built-in module Socket.
This is how you would display “Hello World” in Python.