F-Strings

Info:

As we know, in Python Variables, we can NOT combine strings and numbers like this.

So what to do?

Apparently we can combine strings by using f-strings. Or you can use format() method.

How to use the F-Strings:

F-Strings was introduced in Python 3.6 and is now the preferred way of formatting strings.

To specify a string as an f-string, simply put an f in front of the string literal, and add curly brackets {} as placeholders for variables and other operations.

An example to see this:

age = 38
sentence = f"My name is Garo, I am {age}"
print(sentence)

The example above will give this output:

My name is Garo, I am 38

So as you can see, we used f before the string that we want to print where we include both a string and integer.
Then you see in the curly brackets the integer variable that we added in it.

The curly brackets on this code is a place holder. A placeholder can contain variables, operations, functions and modifiers to format the value.

An example:

price = 50
text = f"The price is {price} dollars"
print(text)

So above, the double brackets are serving as a placeholder for the price.

Modifier inside a placeholder:

A placeholder can include a modifier to format the value. A modifier is included by adding a colon : followed by a legal formatting type, like .2f which means fixed point number with 2 decimals.

Here's an example:

price = 59
text = f"The price is {price:.2f} dollars"
print(text)

Python Code inside a Placeholder:

A place holder can contain Python code, like math operations. For example to perform a math operation in the placeholder, and return the result:

txt = f"The price is {20 * 59} dollars"
print(txt)

And the output will be:

The price is 1180 dollars