}
```

#### Unpacking a `dict` { #unpacking-a-dict }

If we take a `dict` like `user_dict` and pass it to a function (or class) with `**user_dict`, Python will "unpack" it. It will pass the keys and values of the `user_dict` directly as key-value arguments.

So, continuing with the `user_dict` from above, writing:

```Python
UserInDB(**user_dict)
```

would result in something equivalent to:

```Python
UserInDB(

#### About `**user_dict` { #about-user-dict }

`UserInDB(**user_dict)` means:

*Pass the keys and values of the `user_dict` directly as key-value arguments, equivalent to:*

```Python
UserInDB(
    username = user_dict["username"],
    email = user_dict["email"],
    full_name = user_dict["full_name"],
    disabled = user_dict["disabled"],

            assertTrue("Exception should be DictionaryException", e instanceof DictionaryException);
            assertTrue("Message should mention userDict file",
                    e.getMessage().contains("userDict") || e.getMessage().contains("Failed to write"));
        } finally {
            // Ensure proper cleanup
            if (updater != null) {
                try {

     */
    public static final String JAVA_IO_TMPDIR = System.getProperty("java.io.tmpdir");

    /**
     * <code>user.dir</code> system property.
     */
    public static final String USER_DIR = System.getProperty("user.dir");

    /**
     * <code>user.home</code> system property.
     */
    public static final String USER_HOME = System.getProperty("user.home");

    /**

            } catch (final Exception e) {
                if (newFile != null) {
                    newFile.delete();
                }
                throw new DictionaryException("Failed to write a userDict file.", e);
            }
            item = newItem;
        }

        /**
         * Writes a character mapping item to the temporary file.
         *

            } catch (final Exception e) {
                if (newFile != null) {
                    newFile.delete();
                }
                throw new DictionaryException("Failed to write a userDict file.", e);
            }
            item = newItem;
        }

        /**
         * Writes a protwords item to the temporary file.
         * @param oldItem the item to write

            } catch (final Exception e) {
                if (newFile != null) {
                    newFile.delete();
                }
                throw new DictionaryException("Failed to write a userDict file.", e);
            }
            item = newItem;
        }

        /**
         * Writes a stopword item to the temporary file.
         * If the item is being updated, it writes the new version.

            } catch (final Exception e) {
                if (newFile != null) {
                    newFile.delete();
                }
                throw new DictionaryException("Failed to write a userDict file.", e);
            }
            item = newItem;
        }

        /**
         * Writes a stemmer override item to the temporary file.
         * If the item is being updated, it writes the new version.

            } catch (final Exception e) {
                if (newFile != null) {
                    newFile.delete();
                }
                throw new DictionaryException("Failed to write a userDict file.", e);
            }
            item = newItem;
        }

        /**
         * Writes the old item to the new file.
         *
         * @param oldItem The old item.

            } catch (final Exception e) {
                if (newFile != null) {
                    newFile.delete();
                }
                throw new DictionaryException("Failed to write a userDict file.", e);
            }
            item = newItem;
        }

        /**
         * Writes a synonym item to the temporary file.
         * If the item is being updated, it writes the new version.