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Python program to remove the nth index character from a non-empty string

Python program for removing i-th character from a string

Last Updated : 10 Nov, 2024

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In this article, we will explore different methods for removing the i-th character from a string in Python. The simplest method involves using string slicing.

Using String Slicing

String slicing allows us to create a substring by specifying the start and end index. Here, we use two slices to exclude the i-th character.

Python

s = "PythonProgramming"  # Index of the character to remove i = 6  # Removing i-th character res = s[:i] + s[i+1:] print(res)

Output

Pythonrogramming

Explanation:

s[:i]: This slice takes all characters from the start of the string up to, but not including, the i-th index.
s[i+1:]: This slice takes all characters starting from the index after i to the end of the string.
Combining these slices using + effectively removes the character at the specified index.

Let’s explore other different methods to removing i-th character from a string:

Table of Content

Using a for Loop
Using join() with List Comprehension

Using a for Loop

A basic for loop can also be used to iterate over each character in the string and build a new string that excludes the i-th character.

Python

s = "PythonProgramming"  # Index of character to remove i = 6  # Initialize an empty string to store result res = ''  # Loop through each character in original string for j in range(len(s)):        # Check if current index is not index to remove     if j != i:                # Add current character to result string         res += s[j]  print(res)

Output

Pythonrogramming

Using join() with List Comprehension

Another way to remove the i-th character from a string is by using join() and a list comprehension. The idea of approach is similar to the above loop method.

Python

s = "PythonProgramming"  # Index of the character to remove i = 6  # Removing i-th character using list comprehension res = ''.join([s[j] for j in range(len(s)) if j != i]) print(res)

Output

Pythonrogramming

Explanation:

[s[j] for j in range(len(s)) if j != i]: This list comprehension iterates over each character in s, including only those that are not at the i-th index.
”.join(…): The join() function concatenates the list of characters into a single string, effectively skipping the i-th character.

Python program to remove the nth index character from a non-empty string

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Article Tags :

DSA
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Python Programs
Python string-programs
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Practice Tags :

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