Related Articles
Python program to generate a list of alphabets in lexical order
• Last Updated : 11 Oct, 2020

Prerequisite: chr()

The following methods explain how a python list with alphabets in lexical(alphabetic) order can be generated dynamically using chr() method.

Approach:

The core of the concept in both methods is almost same, they only differ in implementation:

1. Validate size of alphabet list(size=26).
2. If size>26, change to 26.
3. If size≤0, no meaning left to the function and to make it meaningful set size to 26.
4. Use chr() to produce the list using any of following methods.

Method 1: Using loop

## Python3

 `# function to get the list of alphabets``def` `generateAlphabetListDynamically(size ``=` `26``):``  ``size ``=` `26` `if` `(size > ``26` `or` `size <``=` `0``) ``else` `size``   ` `  ``# Empty list ``  ``alphabetList ``=` `[]``   ` `  ``# Looping from 0 to required size ``  ``for` `i ``in` `range``(size):``    ``alphabetList.append(``chr``(``65` `+` `i))``   ` `  ``# return the generated list``  ``return` `alphabetList`` ` ` ` `alphabetList ``=` `generateAlphabetListDynamically()``print``(``'The alphabets in the list are:'``, ``*``alphabetList)`

Output:

The alphabets in the list are: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Method 2: using list comprehension

## Python3

 `def` `generateAlphabetListDynamically(size``=``26``):``    ``size ``=` `26` `if` `(size > ``26` `or` `size <``=` `0``) ``else` `size`` ` `    ``# Here we are looping from 0 to upto specified size``    ``# 65 is added because it is ascii equivalent of 'A'``    ``alphabetList ``=` `[``chr``(i``+``65``) ``for` `i ``in` `range``(size)]`` ` `    ``# returning the list``    ``return` `alphabetList`` ` ` ` `# Calling the function to get the alphabets``alphabetList ``=` `generateAlphabetListDynamically()``print``(``'The alphabets in the list are:'``, ``*``alphabetList)`

Output:

The alphabets in the list are: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Attention geek! Strengthen your foundations with the Python Programming Foundation Course and learn the basics.

To begin with, your interview preparations Enhance your Data Structures concepts with the Python DS Course.

My Personal Notes arrow_drop_up