Let's imagine that loading the model can **take quite some time**, because it has to read a lot of **data from disk**. So you don't want to do it for every request.

Reading a file from disk is normally a costly (slow) operation, so you probably want to do it only once and then reuse the same settings object, instead of reading it for each request.

But every time we do:

```Python
Settings()
```

a new `Settings` object would be created, and at creation it would read the `.env` file again.

If the dependency function was just like:

```Python

They are, more or less, at opposite ends, complementing each other.

Requests has a very simple and intuitive design, it's very easy to use, with sensible defaults. But at the same time, it's very powerful and customizable.

That's why, as said in the official website:

> Requests is one of the most downloaded Python packages of all time

The way you use it is very simple. For example, to do a `GET` request, you would write:

```Python

	// based on the dynamic cert state.
	baseTLSConfig *tls.Config

	// clientCA provides the very latest content of the ca bundle
	clientCA CAContentProvider
	// servingCert provides the very latest content of the default serving certificate
	servingCert CertKeyContentProvider
	// sniCerts are a list of CertKeyContentProvider with associated names used for SNI

		atomic.Or8(&x, 1<<i)
		if r := (uint8(1) << (i + 1)) - 1; x != r {
			t.Fatalf("setting bit %#x: want %#x, got %#x", uint8(1)<<i, r, x)
		}
	}

	// Start with every bit in array set to 0.
	a := make([]uint8, 1<<12)

	// Set every bit in array bit-by-bit in different goroutines.
	done := make(chan bool)
	for i := 0; i < 8; i++ {
		m := uint8(1 << i)
		go func() {
			for i := range a {

To see how to achieve this parallelism in production see the section about [Deployment](deployment/index.md){.internal-link target=_blank}.

## `async` and `await`

 *     ext.prop2 = "bar"
 * }
 * subprojects { ext.${prop3} = false }
 * </code></pre>
 */
```

## 1.4 Where Javadoc is used

At the minimum, Javadoc is present for every public type (including public inner types), and every public or protected member of such a type, with a few exceptions such as overrides and self-explanatory members:

```java
public Image getImage(URL url, String name) {}
```

    }

    boolean isImproved() {
        return !crossBuild && currentExecutions.every { it.confidentToSayBetter() }
    }

    boolean isBuildFailed() {
        return teamCityExecutions.every { it.isBuildFailed() } && currentExecutions.empty
    }

    boolean isRegressed() {
        return teamCityExecutions.every { it.isBuildFailed() } && !currentExecutions.empty
    }

    boolean isSuccessful() {

/**
 * A support class for {@code ListenableFuture} implementations to manage their listeners. An
 * instance contains a list of listeners, each with an associated {@code Executor}, and guarantees
 * that every {@code Runnable} that is {@linkplain #add added} will be executed after {@link
 * #execute()} is called. Any {@code Runnable} added after the call to {@code execute} is still

        outputContains("creating model with parameter='fetch2' for root project 'root'")

        and:
        models.keySet() ==~ [":"]
        models.values().every { it.size() == 4 }

        models[":"][0].message == "fetch1 It works from project :"
        models[":"][1].message == "fetch2 It works from project :"
        models[":"][2].message == "fetch1 It works from project :"