Applications

Padding Substitutions or Generating Spaces

Using a dictionary for string formatting

Formatters are generally used to Organize Data. Formatters can be seen in their best light when they are being used to organize a lot of data in a visual way. If we are showing databases to users, using formatters to increase field size and modify alignment can make the output more readable.

Example: To demonstrate the organization of large data using format()

Python3

# which prints out i, i ^ 2, i ^ 3,
#  i ^ 4 in the given range
 
# Function prints out values
# in an unorganized manner
def unorganized(a, b):
    for i in range(a, b):
        print(i, i**2, i**3, i**4)
 
# Function prints the organized set of values
def organized(a, b):
    for i in range(a, b):
 
        # Using formatters to give 6
        # spaces to each set of values
        print("{:6d} {:6d} {:6d} {:6d}"
              .format(i, i ** 2, i ** 3, i ** 4))
 
# Driver Code
n1 = int(input("Enter lower range :-\n"))
n2 = int(input("Enter upper range :-\n"))
 
print("------Before Using Formatters-------")
 
# Calling function without formatters
unorganized(n1, n2)
 
print()
print("-------After Using Formatters---------")
print()
 
# Calling function that contains
# formatters to organize the data
organized(n1, n2)

Output :

Enter lower range :-
3
Enter upper range :-
10
------Before Using Formatters-------
3 9 27 81
4 16 64 256
5 25 125 625
6 36 216 1296
7 49 343 2401
8 64 512 4096
9 81 729 6561
-------After Using Formatters---------
     3      9     27     81
     4     16     64    256
     5     25    125    625
     6     36    216   1296
     7     49    343   2401
     8     64    512   4096
     9     81    729   6561

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.

Applications

Example: To demonstrate the organization of large data using format()

Python3

Python String format() Method

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