Ways to increment a character in Python

In python there is no implicit concept of data types, though explicit conversion of data types is possible, but it not easy for us to instruct operator to work in a way and understand the data type of operand and manipulate according to that. For e.g Adding 1 to a character, if we require to increment the character, an error instructing type conflicts occur, hence other ways need to be formulated to increment the characters.

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# python code to demonstrate error 
# due to incrementing a character
  
# initializing a character
s = 'M'
  
# trying to get 'N'
# produces error
s = s + 1
  
print (s)

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Output:

Traceback (most recent call last):
  File "/home/fabc221bf999b96195c763bf3c03ddca.py", line 9, in 
    s = s + 1
TypeError: cannot concatenate 'str' and 'int' objects

Using ord() + chr()

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# python code to demonstrate way to 
# increment character
  
# initializing character
ch = 'M'
  
# Using chr()+ord()
# prints P
x = chr(ord(ch) + 3)
  
print ("The incremented character value is : ",end="")
print (x)

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Output:

The incremented character value is : P

Explanation : ord() returns the corresponding ASCII value of character and after adding integer to it, chr() again converts it into character.

Using byte string

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# python code to demonstrate way to 
# increment character
  
# initializing byte character
ch = 'M'
  
# converting charater to byte
ch = bytes(ch, 'utf-8')
  
# adding 10 to M
s = bytes([ch[0] + 10])
  
# converting byte to string
s = str(s)
  
# printing the required value
print ("The value of M after incrementing 10 places is : ",end="")
print (s[2])

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Output:

The value of M after incrementing 10 places is : W

Explanation : The character is converted to byte string , incremented, and then again converted to string form with prefix “‘b”, hence 3rd value gives the correct output.

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