Tutorials References Exercises Videos Menu
Create Website Get Certified Upgrade

Python Tutorial

Python HOME Python Intro Python Get Started Python Syntax Python Comments Python Variables Python Data Types Python Numbers Python Casting Python Strings Python Booleans Python Operators Python Lists Python Tuples Python Sets Python Dictionaries Python If...Else Python While Loops Python For Loops Python Functions Python Lambda Python Arrays Python Classes/Objects Python Inheritance Python Iterators Python Scope Python Modules Python Dates Python Math Python JSON Python RegEx Python PIP Python Try...Except Python User Input Python String Formatting

File Handling

Python File Handling Python Read Files Python Write/Create Files Python Delete Files

Python Modules

NumPy Tutorial Pandas Tutorial SciPy Tutorial Django Tutorial

Python Matplotlib

Matplotlib Intro Matplotlib Get Started Matplotlib Pyplot Matplotlib Plotting Matplotlib Markers Matplotlib Line Matplotlib Labels Matplotlib Grid Matplotlib Subplot Matplotlib Scatter Matplotlib Bars Matplotlib Histograms Matplotlib Pie Charts

Machine Learning

Getting Started Mean Median Mode Standard Deviation Percentile Data Distribution Normal Data Distribution Scatter Plot Linear Regression Polynomial Regression Multiple Regression Scale Train/Test Decision Tree Confusion Matrix Hierarchical Clustering Logistic Regression Grid Search Categorical Data K-means Bootstrap Aggregation Cross Validation AUC - ROC Curve K-nearest neighbors

Python MySQL

MySQL Get Started MySQL Create Database MySQL Create Table MySQL Insert MySQL Select MySQL Where MySQL Order By MySQL Delete MySQL Drop Table MySQL Update MySQL Limit MySQL Join

Python MongoDB

MongoDB Get Started MongoDB Create Database MongoDB Create Collection MongoDB Insert MongoDB Find MongoDB Query MongoDB Sort MongoDB Delete MongoDB Drop Collection MongoDB Update MongoDB Limit

Python Reference

Python Overview Python Built-in Functions Python String Methods Python List Methods Python Dictionary Methods Python Tuple Methods Python Set Methods Python File Methods Python Keywords Python Exceptions Python Glossary

Module Reference

Random Module Requests Module Statistics Module Math Module cMath Module

Python How To

Remove List Duplicates Reverse a String Add Two Numbers

Python Examples

Python Examples Python Compiler Python Exercises Python Quiz Python Certificate

Python String format() Method

❮ String Methods


Example

Insert the price inside the placeholder, the price should be in fixed point, two-decimal format:

txt = "For only {price:.2f} dollars!"
print(txt.format(price = 49))
Try it Yourself »

Definition and Usage

The format() method formats the specified value(s) and insert them inside the string's placeholder.

The placeholder is defined using curly brackets: {}. Read more about the placeholders in the Placeholder section below.

The format() method returns the formatted string.


Syntax

string.format(value1, value2...)

Parameter Values

Parameter Description
value1, value2... Required. One or more values that should be formatted and inserted in the string.

The values are either a list of values separated by commas, a key=value list, or a combination of both.

The values can be of any data type.

The Placeholders

The placeholders can be identified using named indexes {price}, numbered indexes {0}, or even empty placeholders {}.

Example

Using different placeholder values:

txt1 = "My name is {fname}, I'm {age}".format(fname = "John", age = 36)
txt2 = "My name is {0}, I'm {1}".format("John",36)
txt3 = "My name is {}, I'm {}".format("John",36)
Try it Yourself »

Formatting Types

Inside the placeholders you can add a formatting type to format the result:

:< Try it Left aligns the result (within the available space)
:> Try it Right aligns the result (within the available space)
:^ Try it Center aligns the result (within the available space)
:= Try it Places the sign to the left most position
:+ Try it Use a plus sign to indicate if the result is positive or negative
:- Try it Use a minus sign for negative values only
Try it Use a space to insert an extra space before positive numbers (and a minus sign before negative numbers)
:, Try it Use a comma as a thousand separator
:_ Try it Use a underscore as a thousand separator
:b Try it Binary format
:c Converts the value into the corresponding unicode character
:d Try it Decimal format
:e Try it Scientific format, with a lower case e
:E Try it Scientific format, with an upper case E
:f Try it Fix point number format
:F Try it 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 Try it Octal format
:x Try it Hex format, lower case
:X Try it Hex format, upper case
:n Number format
:% Try it Percentage format

❮ String Methods