Reverse Text with Slicing

Practice Exercise Beginner Easy Two Pointers String

Checking your account…

Loading the interactive Practice workspace.If it does not appear, the problem and learning material remain readable, but browser execution is unavailable.Reload Practice workspace

Problem

Implement reverse_text(value). Return the characters in reverse order without calling reversed().

Starter code

def reverse_text(value: str) -> str:
    pass

Test cases

sample

{
  "args": [
    "python"
  ]
}

Expected: "nohtyp"

Wizard outline

Step 1: Preserve a one-character slice
Return the only character through slicing instead of indexing. A slice remains safe for an empty boundary while direct indexing would raise an exception.
Step 2: Walk the entire string backward
Reverse every character with a negative slice step. An omitted start and stop with step -1 traverses the complete sequence in reverse order and also handles empty input.

Footguns and prerequisites

Strings are immutable; return the new string instead of printing it.
strings
functions

Reviewed references

Python Common Sequence Operations

Recommended approach and implementation

Use a full slice whose step is -1.

Why it works: The slice visits every character exactly once from the final index to the first.

def reverse_text(value: str) -> str:
    return value[::-1]