# String Formatting

> Source: https://learn-python.com/string-formatting/
> Part of Learn Python, free to read.

Python uses C-style string formatting to create new, formatted strings. The “%” operator is used to format a set of variables enclosed in a “tuple” (a fixed size list), together with a format string, which contains normal text together with “argument specifiers”, special symbols like “%s” and “%d”.

Let’s say you have a variable called “name” with your user name in it, and you would then like to print(out a greeting to that user.)

```python
# This prints out "Hello, John!"
name = "John"
print("Hello, %s!" % name)
```

To use two or more argument specifiers, use a tuple (parentheses):

```python
# This prints out "John is 23 years old."
name = "John"
age = 23
print("%s is %d years old." % (name, age))
```

Any object which is not a string can be formatted using the %s operator as well. The string which returns from the “repr” method of that object is formatted as the string. For example:

```python
# This prints out: A list: [1, 2, 3]
mylist = [1,2,3]
print("A list: %s" % mylist)
```

Here are some basic argument specifiers you should know:

`%s - String (or any object with a string representation, like numbers)`

`%d - Integers`

`%f - Floating point numbers`

`%.f - Floating point numbers with a fixed amount of digits to the right of the dot.`

`%x/%X - Integers in hex representation (lowercase/uppercase)`