This article will go over the four different types of string formatting techniques in Python.<\/p>\n\n\n\n
We’ll go over all four types of methods and their applications so we can understand the fundamentals of various string formatting techniques.<\/p>\n\n\n\n
What is string formatting? Well, we can call it the process in which we inject things dynamically into the string and return the formatted version of that string<\/strong>.<\/p>\n\n\n\n There are 4 ways to perform string formatting<\/strong> that are all different from each other:<\/p>\n\n\n\n We will see the fundamentals of the ways mentioned above.<\/p>\n\n\n\n This way of formatting the strings, use the % (modulo) operator<\/strong>. If you’re familiar with Python’s arithmetic operators, you’ll recognize that we use this operator to calculate the remainder of the dividend.<\/p>\n\n\n\n The same operator we use in the oldest style of string formatting. Modulo ( Here’s an example:<\/strong><\/p>\n\n\n\n Output:<\/strong><\/p>\n\n\n\n We use format specifiers to tell Python that the given value must be substituted in that specific position.<\/p>\n\n\n\n We used the We have some format specifiers that we use commonly:<\/p>\n\n\n\n Let’s look at the examples showing different formatting conditions.<\/p>\n\n\n\n Example 1: Formatting the integer values<\/strong><\/p>\n\n\n\n Output:<\/strong><\/p>\n\n\n\n We can insert multiple strings as well as we can use variables to insert objects in the string.<\/p>\n\n\n\n Example 2:<\/strong><\/p>\n\n\n\n Output:<\/strong><\/p>\n\n\n\n Using multiple format conversion types in a single string.<\/p>\n\n\n\n Example 3:<\/strong><\/p>\n\n\n\n Output:<\/strong><\/p>\n\n\n\n Floating-point Precision using the % operator<\/strong><\/p>\n\n\n\n Output:<\/strong><\/p>\n\n\n\n Now you might wonder, why we used Floating-point numbers<\/strong> use an If the whole number doesn’t have the specified number of digits then it might be padded with whitespace.<\/strong><\/p>\n\n\n\n Output:<\/strong><\/p>\n\n\n\n The first print statement is padded with whitespace in this case. There is a distinction between the two outcomes.<\/p>\n\n\n\n To know more, click here<\/a>.<\/p>\n<\/blockquote>\n\n\n\n This method is introduced to get rid of the % operator formatting<\/strong>. This method is suitable for handling complex string formatting more efficiently.<\/p>\n\n\n\n In this technique of formatting, formatters work by putting the placeholders enclosed by pair of curly braces Syntax:<\/strong><\/p>\n\n\n\n “String goes { } and here { }”.format(“here” , “also”)<\/strong><\/p>\n<\/blockquote>\n\n\n\n Here’s an example:<\/strong><\/p>\n\n\n\n Output:<\/strong><\/p>\n\n\n\n Let’s see some examples<\/p>\n\n\n\n We can use index-based positioning to insert the object into the string<\/p>\n\n\n\n Example – 1: Using index-based positioning<\/strong><\/p>\n\n\n\n Output:<\/strong><\/p>\n\n\n\n Example – 2:<\/strong><\/p>\n\n\n\n Output:<\/strong><\/p>\n\n\n\n Example – 3: Reusing the same value<\/strong><\/p>\n\n\n\n Output:<\/strong><\/p>\n\n\n\n Floating-point Precision with<\/strong> Output:<\/strong><\/p>\n\n\n\n We have seen floating-point precision<\/strong> using the Here, the Syntax<\/strong> is<\/p>\n\n\n\n { [ index ] : [ width ] . [ precision ] [ type ] }<\/strong><\/p>\n<\/blockquote>\n\n\n\n If we breakdown Here are the common types that we can use with format code:<\/p>\n\n\n\n To know more, click here<\/a>.<\/p>\n<\/blockquote>\n\n\n\n Literal string interpolation, a new mechanism to format strings which were introduced in PEP 498<\/a>.<\/p>\n\n\n\n\n
<\/a>1. Using % (modulo) Operator<\/h1>\n\n\n\n
%<\/code>) operators are also referred to as “String-formatting”<\/strong> or “String-interpolation”<\/strong> operators.<\/p>\n\n\n\n# Use of the modulo operator for string formatting\nname = \"Python\"\nprint(\"Hello, %s\" % name)\n\n# ----------------OR--------------\n\nprint(\"Hello, %s!\" % 'Geeks')<\/pre><\/div>\n\n\n\n
Hello, Python\nHello, Geeks!<\/pre><\/div>\n\n\n\n
\"%s\"<\/code> format specifier to insert the string \"Python\"<\/code> in that specific position.<\/p>\n\n\n\n\n
print(\"I bought %d apples and %d oranges.\" %(6, 4))<\/pre><\/div>\n\n\n\n
I bought 6 apples and 4 oranges.<\/pre><\/div>\n\n\n\n
x = \"car\"\nprint(\"The dog %s down the %s.\" %('chased', x))<\/pre><\/div>\n\n\n\nThe dog chased down the car.<\/pre><\/div>\n\n\n\n
name = \"Yashwant\"\nprint(\"My %s %s bought the car worth $%d.\" %('friend', name, 15000))<\/pre><\/div>\n\n\n\nMy friend Yashwant bought the car worth $15000.<\/pre><\/div>\n\n\n\n
print(\"The length of land is: %2.3f metres\" %(85.52590))<\/pre><\/div>\n\n\n\n
The length of land is: 85.526 metres<\/pre><\/div>\n\n\n\n
%2.3f<\/code>.<\/p>\n\n\n\nx.yf<\/code> format, where x<\/code> is a minimum number of digits in a string and yf<\/code> represents how many digits have to display after the decimal point.<\/p>\n\n\n\nprint(\"The length of land is: %7.3f metres\" %(85.52590))\nprint(\"The length of land is: %0.3f metres\" %(85.52590))<\/pre><\/div>\n\n\n\n
The length of land is: 85.526 metres\nThe length of land is: 85.526 metres<\/pre><\/div>\n\n\n\n
\n
<\/a>2. Using format() method<\/h1>\n\n\n\n
str.format()<\/code> method is pretty simple and fast as compared to \"%\"<\/code> operator formatting and is introduced in Python3.<\/p>\n\n\n\n\"{ }\"<\/code> and calling the str.format()<\/code> method.<\/p>\n\n\n\n\n
# Formatting using format() method\nprint(\"Hey {}, Welcome {}.\".format('Geeks', 'to GeekPython'))<\/pre><\/div>\n\n\n\nHey Geeks, Welcome to GeekPython.<\/pre><\/div>\n\n\n\n
print(\"{1}, there is a {2} {0} ahead.\".format(\"error\", \"Caution\", \"Python\"))<\/pre><\/div>\n\n\n\nCaution, there is a Python error ahead.<\/pre><\/div>\n\n\n\n
print(\"Python: {x}, Inventor: {y}, Version: {z}\".format(x=1991,\n y=\"Guido\",\n z=3.11))<\/pre><\/div>\n\n\n\nPython: 1991, Inventor: Guido, Version: 3.11<\/pre><\/div>\n\n\n\n
print(\"The first {obj} was easy, the second {obj} was intermediate \"\n \"but the third {obj} was very tough.\".format(obj=\"hurdle\"))<\/pre><\/div>\n\n\n\nThe first hurdle was easy, the second hurdle was intermediate but the third hurdle was very tough.<\/pre><\/div>\n\n\n\n
.format()<\/code> method<\/p>\n\n\n\nprint(\"The decimal number is: {0:1.3f}\".format(54.123456, 23.5466))\nprint(\"The decimal number is: {1:1.3f}\".format(54.123456, 23.5466))<\/pre><\/div>\n\n\n\nThe decimal number is: 54.123\nThe decimal number is: 23.547<\/pre><\/div>\n\n\n\n
%<\/code> operator where the format was x.yf<\/code> but here the case is a bit different.<\/p>\n\n\n\n\n
{0:1.3f}<\/code> this then:<\/p>\n\n\n\n\n
0<\/code> – is the index value<\/li>\n\n\n\n1<\/code> – is the width<\/li>\n\n\n\n3<\/code> – is the precision or no. of digits to be displayed after the decimal point<\/li>\n\n\n\nf<\/code> – is the type of format code<\/li>\n<\/ul>\n\n\n\n\n
\n
<\/a>3. Using f-string (Literal String Interpolation)<\/h1>\n\n\n\n