Python: Remove the characters which have odd index values of a given string

Last update on June 12 2025 12:43:19 (UTC/GMT +8 hours)

Remove odd index chars from a string.

Write a Python program to remove characters that have odd index values in a given string.

Sample Solution:

Python Code:

# Define a function named odd_values_string that takes one argument, 'str'.
def odd_values_string(str):
    # Initialize an empty string 'result' to store characters with odd indices.
    result = ""
    
    # Iterate through the indices (i) of the characters in the input string 'str'.
    for i in range(len(str)):
        # Check if the index (i) is even (i.e., has a remainder of 0 when divided by 2).
        if i % 2 == 0:
            # If the index is even, append the character at that index to the 'result' string.
            result = result + str[i]
    
    # Return the 'result' string containing characters with odd indices.
    return result

# Call the odd_values_string function with different input strings and print the results.
print(odd_values_string('abcdef'))  # Output: 'ace'
print(odd_values_string('python'))  # Output: 'pto'

Sample Output:

ace                                                                                                           
pto 

Flowchart:

For more Practice: Solve these Related Problems:

• Write a Python program to remove characters at odd indices using slicing with a step of 2.
• Write a Python program to iterate over a string with enumerate() and select characters with even indices.
• Write a Python program to use list comprehension to filter out characters at odd positions and join them into a new string.
• Write a Python program to build a new string containing only characters from even index positions using a loop.

Go to:

• Python Data Type String Exercises Home ↩
• Python Exercises Home ↩

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