Python Tutorial 4 – If selection
Hey, welcome back. In this tutorial we will go
through If selection. By the way selection
is one of the basic concepts of programming. It helps users select from a
multiple choices. Today we will write a little program that will let users to
input their password twice and assure them that they wrote the same password.
Here is the source code >>
And when we run this (You can
press F5 to run) >>
If is a statement that evaluates to a single selection. There
above, we selected from correct password and wrong password. When we go through
the code the first line obviously prints Please type in your password. Then the next
line stores whatever password the user input in password1.
Then we store what the user inputs when asked to retype in the variable password2. Then when we go to the if selection the first thing to know is how to
write if statements. The syntax is >>
If the first condition evaluates
to true, it will go through the statements inside if
semi-colon. But if the condition evaluates to false, it will go inside the else statements. Easy logic. So in our case
>>
So let’s run our program
again >>
As you
can see up there, the second case must have gone through the else because it printed Sorry, your passwords donot match!.
So that was all for this
tutorial. I hope you understood the concept, it’s pretty easy. See you in the next tutorial.
