What is Python Output Formatting?

A program's output can be shown in a variety of ways, including printing data in a human-readable manner, saving data to a file for later use, or presenting data in another way. 

Users frequently want more output formatting choices than just printing space-separated values. There are several output formatting options.The output of a program can be shown in a variety of ways, including printing it in a human-readable manner or saving it to a file for later use. More flexibility over the output formatting than merely publishing space-separated values may be desired by the user.

To utilize formatted string literals, precede the initial quotation mark or triple quotation mark with f or F.The str.format() function of strings assists a user in obtaining a nicer result. Users may construct any layout they desire by utilizing string slicing and concatenation techniques to accomplish all of the string processing. The string type includes a few methods that may be used to pad strings to specific column width.

Formatting output using String modulo operator(%)

String formatting can also be done with the percent operator. It treats the left parameter as if it were a printf()-style format string to be applied to the right.

Example

print("abc : % 2d, Portal : % 5.2f" %(1, 05.333))

print("Total students : % 3d, Boys : % 2d" %(240, 120))

print("% 7.3o"% (25))

print("% 10.3E"% (356.08977))

Output

Formatting Output Using Format Method in Python

Python 2.6 introduced the format() function. The string formatting approach necessitates greater manual work. Users can indicate where a variable will be substituted and offer precise formatting directions, but they must also supply the data to be prepared.

Example

tab = {'abc': 4127, 'for': 4098, 'python': 8637678}

print('abc: {0[abc]:d}; For: {0[for]:d}; '

'python: {0[python]:d}'.format(tab))

data = dict(fun ="abcforPython", adj ="Python")

print("I love {fun} computer {adj}".format(**data))

Formatting Output Using String Method

In this, output is formatted by using string slicing and concatenation operations.

Example

cstr = "I love python"

print ("Center aligned string with fillchr: ")

print (cstr.center(40, '$'))

print ("The left aligned string is : ")

print (cstr.ljust(40, '-'))

print ("The right aligned string is : ")

print (cstr.rjust(40, '-'))

Output