# data[].attributes.body
In our example and assignment, we determined if a person is the right age to be driving, or if they are too old or too young.

# data[].attributes.attachment_link.readable_text
Python Conditions and If statements

Python supports the usual logical conditions from mathematics:

These conditions can be used in several ways, most commonly in "if statements" and loops.

An "if statement" is written by using the if keyword.

Example

If statement:

Try it Yourself "

In this example we use two variables, a and b, which are used as part of the if statement to test whether b is greater than a. As a is 33, and b is 200, we know that 200 is greater than 33, and so we print to screen that "b is greater than a".

Indentation

Python relies on indentation (whitespace at the beginning of a line) to define scope in the code. Other programming languages often use curly-brackets for this purpose.

Example

If statement, without indentation (will raise an error):

Try it Yourself "

Elif

The elif keyword is Python's way of saying "if the previous conditions were not true, then try this condition".

Example

Try it Yourself "

In this example a is equal to b, so the first condition is not true, but the elif condition is true, so we print to screen that "a and b are equal".

Else

The else keyword catches anything which isn't caught by the preceding conditions.

Example

Try it Yourself "

In this example a is greater than b, so the first condition is not true, also the elif condition is not true, so we go to the else condition and print to screen that "a is greater than b".

You can also have an else without the elif:

Example

Try it Yourself "

Short Hand If

If you have only one statement to execute, you can put it on the same line as the if statement.

Example

One line if statement:

Try it Yourself "

Short Hand If ... Else

If you have only one statement to execute, one for if, and one for else, you can put it all on the same line:

Example

One line if else statement:

Try it Yourself "

This technique is known as Ternary Operators, or Conditional Expressions.

You can also have multiple else statements on the same line:

Example

One line if else statement, with 3 conditions:

Try it Yourself "

And

The and keyword is a logical operator, and is used to combine conditional statements:

Example

Test if a is greater than b, AND if c is greater than a:

Try it Yourself "

Or

The or keyword is a logical operator, and is used to combine conditional statements:

Example

Test if a is greater than b, OR if a is greater than c:

Try it Yourself "

Not

The not keyword is a logical operator, and is used to reverse the result of the conditional statement:

Example

Test if a is NOT greater than b:

Try it Yourself "

Nested If

You can have if statements inside if statements, this is called nested if statements.

Example

x = 41

Try it Yourself "

The pass Statement

if statements cannot be empty, but if you for some reason have an if statement with no content, put in the pass statement to avoid getting an error.

# data[].attributes.attachment_link.description
W3Schools offers free online tutorials, references and exercises in all the major languages of the web. Covering popular subjects like HTML, CSS, JavaScript, Python, SQL, Java, and many, many more.

# data[].attributes.body
In the video he used it just as a way to count how many times the loop had run.

# data[].attributes.attachment_link.readable_text
Python Loops

Python has two primitive loop commands:

The while Loop

With the while loop we can execute a set of statements as long as a condition is true.

Example

Print i as long as i is less than 6:

Try it Yourself "

Note: remember to increment i, or else the loop will continue forever.

The while loop requires relevant variables to be ready, in this example we need to define an indexing variable, i, which we set to 1.

The break Statement

With the break statement we can stop the loop even if the while condition is true:

Example

Exit the loop when i is 3:

Try it Yourself "

The continue Statement

With the continue statement we can stop the current iteration, and continue with the next:

Example

Continue to the next iteration if i is 3:

Try it Yourself "

The else Statement

With the else statement we can run a block of code once when the condition no longer is true:

Example

Print a message once the condition is false:

Try it Yourself "

# data[].attributes.attachment_link.description
W3Schools offers free online tutorials, references and exercises in all the major languages of the web. Covering popular subjects like HTML, CSS, JavaScript, Python, SQL, Java, and many, many more.

# data[].attributes.body
In the video , he used this operator  like this, i += 1, to add one to "i" every time the program looped. Check out the link for more.

# data[].attributes.attachment_link.description
W3Schools offers free online tutorials, references and exercises in all the major languages of the web. Covering popular subjects like HTML, CSS, JavaScript, Python, SQL, Java, and many, many more.