import com.google.common.base.Function;
import com.google.common.base.Optional;
import com.google.common.base.Predicate;
import com.google.common.collect.FluentIterable;
import com.google.common.collect.ImmutableListMultimap;
import com.google.common.collect.ImmutableMultimap;
import com.google.common.collect.ImmutableSet;
import com.google.common.testing.EqualsTester;
import com.google.common.testing.NullPointerTester;
import java.lang.reflect.Field;

 * limitations under the License.
 */

package com.google.common.collect;

import static com.google.common.base.Preconditions.checkNotNull;
import static com.google.common.base.Preconditions.checkPositionIndex;
import static com.google.common.collect.CollectPreconditions.checkEntryNotNull;
import static com.google.common.collect.ImmutableMapEntry.createEntryArray;
import static java.util.Objects.requireNonNull;

 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.google.common.collect.testing;

import static com.google.common.collect.testing.Helpers.mapEntry;

import com.google.common.annotations.GwtCompatible;
import java.util.Arrays;
import java.util.Iterator;
import java.util.List;
import java.util.Map.Entry;

 * limitations under the License.
 */

package com.google.common.collect.testing;

import static java.util.Collections.emptySet;

import com.google.common.annotations.GwtIncompatible;
import com.google.common.collect.testing.features.CollectionFeature;
import com.google.common.collect.testing.features.CollectionSize;
import java.lang.reflect.Method;
import java.util.ArrayDeque;

import static com.google.common.base.Preconditions.checkPositionIndexes;
import static com.google.common.collect.CollectPreconditions.checkNonnegative;
import static com.google.common.collect.ObjectArrays.checkElementsNotNull;
import static com.google.common.collect.RegularImmutableList.EMPTY;

import com.google.common.annotations.GwtCompatible;
import com.google.common.annotations.GwtIncompatible;

import com.google.common.base.Joiner;
import com.google.common.collect.ArrayListMultimap;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ListMultimap;
import com.google.common.collect.Lists;
import com.google.common.collect.MutableClassToInstanceMap;
import com.google.common.collect.Ordering;
import com.google.common.reflect.Invokable;
import com.google.common.reflect.Parameter;

### Meer motivatie

Bekijk deze functie, deze heeft al type hints:

{* ../../docs_src/python_types/tutorial003.py hl[1] *}


Omdat de editor de types van de variabelen kent, krijgt u niet alleen aanvulling, maar ook controles op fouten:

<img src="/img/python-types/image04.png">

Nu weet je hoe je het moet oplossen, converteer `age` naar een string met `str(age)`:

 * the License.
 */

package com.google.common.collect;

import static com.google.common.truth.Truth.assertThat;
import static org.junit.Assert.assertThrows;

import com.google.common.annotations.GwtIncompatible;
import com.google.common.collect.testing.NavigableSetTestSuiteBuilder;
import com.google.common.collect.testing.SampleElements;
import com.google.common.collect.testing.TestSetGenerator;

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.google.common.collect.testing;

import com.google.common.annotations.GwtCompatible;
import java.util.Collection;
import java.util.List;
import java.util.Map;
import org.jspecify.annotations.NullMarked;

 * or implied. See the License for the specific language governing permissions and limitations under
 * the License.
 */

package com.google.common.collect.testing.features;

import com.google.common.annotations.GwtCompatible;
import java.lang.annotation.Documented;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;