Imported and Not Used

Why This Happens

Go treats unused imports as a compile error, not a warning. This keeps code clean but can be annoying during development. You can use the blank identifier _ to import a package purely for its init() side effects.

The Problem

package main

import (
    "fmt"
    "os"
)

func main() {
    fmt.Println("hello")
    // os is never used
}

The Fix

package main

import "fmt"

func main() {
    fmt.Println("hello")
}

Step-by-Step Fix

1. 1

   Identify the unused import

   The compiler error names the exact package that is imported but not used.

2. 2

   Decide if it is needed

   If the import is not needed, remove it. If it is needed for side effects, prefix with a blank identifier.

3. 3

   Use goimports or IDE tooling

   Run goimports to automatically add and remove imports as needed.