String Format() in Python Example

String format() with multiple placeholders

A simple demonstration of Python String format() Method in Python.

Python3

name = "Ram"
age = 22
message = "My name is {0} and I am {1} years \
                    old. {1} is my favorite \
                    number.".format(name, age)
print(message)

Output

My name is Ram and I am 22 years old. 22 is my favorite number.

Using .Format() Method

This method of the built-in string class provides functionality for complex variable substitutions and value formatting. This new formatting technique is regarded as more elegant. The general syntax of format() method is string.format(var1, var2,…). Here we will try to understand how to Format A String That Contains Curly Braces In Python.

Python3

txt = "I have {an:.2f} Rupees!"
print(txt.format(an = 4))

Output

I have 4.00 Rupees!

Using a Single Formatter

In this example, we will use the string bracket notation program to demonstrate the str. format() method. Formatters work by putting in one or more replacement fields and placeholders defined by a pair of curly braces { } into a string and calling the str.format().

Python3

# using format option in a simple string
print("{}, A computer science portal for geeks."
      .format("w3wiki"))
 
# using format option for a
# value stored in a variable
str = "This article is written in {}"
print(str.format("Python"))
 
# formatting a string using a numeric constant
print("Hello, I am {} years old !".format(18))

Output

w3wiki, A computer science portal for geeks.
This article is written in Python
Hello, I am  18 years old!

Python String format() Method

The format() method is a powerful tool that allows developers to create formatted strings by embedding variables and values into placeholders within a template string. This method offers a flexible and versatile way to construct textual output for a wide range of applications. Python string format() function has been introduced for handling complex string formatting more efficiently. Sometimes we want to make generalized print statements in that case instead of writing print statements every time we use the concept of formatting.

String Format() in Python Example

Python3

Using .Format() Method

Python3

Using a Single Formatter

Python3

Python String format() Method

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