import keyword in Go

The keyword import in Go is used for importing a package into other packages. 
You can write multiple import statements, like:
```
import "fmt"
import "math"
```
But it is good style to use the parenthesized, "factored" import statement.
```
import (
	"fmt"
	"math"
)
```
In Go, a name is exported if it begins with a capital letter. When importing a package, you can refer only to its exported names. Any "un-exported" names are not accessible from outside the package. 
```
package main

import (
	"fmt"
	"math"
)

func main() {
	fmt.Println(math.Pi)
}
```
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