In this tutorial , we will learn about python format() method and its uses.
What is python format() method?
The format() is a built-in python method that returns a formatted representation of the specified value.
The syntax of format() is:
format(value1, value2)
format() Parameters
The format()methods takes single parameters but multiple arguments:
- values – one or more values that needed to be formatted.
format() Placeholders
The placeholders can be identified using names indexes {value}, numbered indexes like {0} , {1},etc. Or even empty {} placeholder.
Let’s check a simple example of the format()method.
Example 1: Simple formatting using format() method.
my_string = “Python”
print(“We are learning {} from Pythonscholar.com”.format(“Python”))
print(“We are learning {} from Pythonscholar.com”.format(my_string))
print(“We are learning {1} from {0}”.format(“Pythonscholar.com”,“Python”))
Output:
We are learning Python from Pythonscholar.com
We are learning Python from Pythonscholar.com
We are learning Python from Pythonscholar.com
Formatting Specifiers
format() method also supports different types for formatting specifiers that helps to manipulate the results.
| :< | Result will be aligned left |
| :> | Result will be aligned right |
| :^ | Result will be aligned center |
| := | Places the sign to the left most position |
| :+ | Use a plus sign to indicate if the result is positive or negative |
| :- | Use a minus sign for negative values only |
| : | Use a space to insert an extra space before positive numbers (and a minus sign before negative numbers) |
| :, | Use a comma as a thousand separator |
| :_ | Use a underscore as a thousand separator |
| :b | Binary format |
| :c | Converts the value into the corresponding unicode character |
| :d | Decimal format |
| :e | Scientific format, with a lowercase e |
| :E | Scientific format, with an uppercase E |
| :f | Fix point number format |
| :F | Fix point number format, in uppercase format (show inf and nan as INF and NAN) |
| :g | General format |
| :G | General format (using a upper case E for scientific notations) |
| : o | Octal format |
| : x | Hex format, lower case |
| :X | Hex format, upper case |
| :n | Number format |
| :% | Percentage format |
Example 2: Using format specifiers with format() method.
print(“The value is : {:x}”.format(500))
print(“The value is : {:%}”.format(0.80))
print(“The value is: {:5}”.format(40))
Output:
The value is : 1f4
The value is : 80.000000%
The value is: 40
Rules of format()
There are no such rules to follow in the format() method.