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---
title: MorphAnalysis
tag: class
source: spacy/tokens/morphanalysis.pyx
---
Stores a single morphological analysis.
## MorphAnalysis.\_\_init\_\_ {#init tag="method"}
Initialize a MorphAnalysis object from a UD FEATS string or a dictionary of
morphological features.
> #### Example
>
> ```python
> from spacy.tokens import MorphAnalysis
>
> feats = "Feat1=Val1|Feat2=Val2"
> m = MorphAnalysis(nlp.vocab, feats)
> ```
| Name | Type | Description |
| ----------- | ------------------ | ----------------------------- |
| `vocab` | `Vocab` | The vocab. |
| `features` | `Union[Dict, str]` | The morphological features. |
| **RETURNS** | `MorphAnalysis` | The newly constructed object. |
## MorphAnalysis.\_\_contains\_\_ {#contains tag="method"}
Whether a feature/value pair is in the analysis.
> #### Example
>
> ```python
> feats = "Feat1=Val1,Val2|Feat2=Val2"
> morph = MorphAnalysis(nlp.vocab, feats)
> assert "Feat1=Val1" in morph
> ```
| Name | Type | Description |
| ----------- | ----- | ------------------------------------- |
| **RETURNS** | `str` | A feature/value pair in the analysis. |
## MorphAnalysis.\_\_iter\_\_ {#iter tag="method"}
Iterate over the feature/value pairs in the analysis.
> #### Example
>
> ```python
> feats = "Feat1=Val1,Val3|Feat2=Val2"
> morph = MorphAnalysis(nlp.vocab, feats)
> assert list(morph) == ["Feat1=Va1", "Feat1=Val3", "Feat2=Val2"]
> ```
| Name | Type | Description |
| ---------- | ----- | ------------------------------------- |
| **YIELDS** | `str` | A feature/value pair in the analysis. |
## MorphAnalysis.\_\_len\_\_ {#len tag="method"}
Returns the number of features in the analysis.
> #### Example
>
> ```python
> feats = "Feat1=Val1,Val2|Feat2=Val2"
> morph = MorphAnalysis(nlp.vocab, feats)
> assert len(morph) == 3
> ```
| Name | Type | Description |
| ----------- | ----- | --------------------------------------- |
| **RETURNS** | `int` | The number of features in the analysis. |
## MorphAnalysis.\_\_str\_\_ {#str tag="method"}
Returns the morphological analysis in the UD FEATS string format.
> #### Example
>
> ```python
> feats = "Feat1=Val1,Val2|Feat2=Val2"
> morph = MorphAnalysis(nlp.vocab, feats)
> assert str(morph) == feats
> ```
| Name | Type | Description |
| ----------- | ----- | ---------------------------------|
| **RETURNS** | `str` | The analysis in UD FEATS format. |
## MorphAnalysis.get {#get tag="method"}
Retrieve values for a feature by field.
> #### Example
>
> ```python
> feats = "Feat1=Val1,Val2"
> morph = MorphAnalysis(nlp.vocab, feats)
> assert morph.get("Feat1") == ["Val1", "Val2"]
> ```
| Name | Type | Description |
| ----------- | ------ | ----------------------------------- |
| `field` | `str` | The field to retrieve. |
| **RETURNS** | `list` | A list of the individual features. |
## MorphAnalysis.to_dict {#to_dict tag="method"}
Produce a dict representation of the analysis, in the same format as the tag
map.
> #### Example
>
> ```python
> feats = "Feat1=Val1,Val2|Feat2=Val2"
> morph = MorphAnalysis(nlp.vocab, feats)
> assert morph.to_dict() == {"Feat1": "Val1,Val2", "Feat2": "Val2"}
> ```
| Name | Type | Description |
| ----------- | ------ | -----------------------------------------|
| **RETURNS** | `dict` | The dict representation of the analysis. |
## MorphAnalysis.from_id {#from_id tag="classmethod"}
Create a morphological analysis from a given hash ID.
> #### Example
>
> ```python
> feats = "Feat1=Val1|Feat2=Val2"
> hash = nlp.vocab.strings[feats]
> morph = MorphAnalysis.from_id(nlp.vocab, hash)
> assert str(morph) == feats
> ```
| Name | Type | Description |
| ------- | ------- | -------------------------------- |
| `vocab` | `Vocab` | The vocab. |
| `key` | `int` | The hash of the features string. |

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---
title: Morphology
tag: class
source: spacy/morphology.pyx
---
Store the possible morphological analyses for a language, and index them
by hash. To save space on each token, tokens only know the hash of their
morphological analysis, so queries of morphological attributes are delegated to
this class.
## Morphology.\_\_init\_\_ {#init tag="method"}
Create a Morphology object using the tag map, lemmatizer and exceptions.
> #### Example
>
> ```python
> from spacy.morphology import Morphology
>
> morphology = Morphology(strings, tag_map, lemmatizer)
> ```
| Name | Type | Description |
| ----------- | ---------------------------------------- | --------------------------------------------------------------------------------------------------------- |
| `strings` | `StringStore` | The string store. |
| `tag_map` | `Dict[str, Dict]` | The tag map. |
| `lemmatizer`| `Lemmatizer` | The lemmatizer. |
| `exc` | `Dict[str, Dict]` | A dictionary of exceptions in the format `{tag: {orth: {"POS": "X", "Feat1": "Val1, "Feat2": "Val2", ...}` |
| **RETURNS** | `Morphology` | The newly constructed object. |
## Morphology.add {#add tag="method"}
Insert a morphological analysis in the morphology table, if not already
present. The morphological analysis may be provided in the UD FEATS format as a
string or in the tag map dictionary format. Returns the hash of the new
analysis.
> #### Example
>
> ```python
> feats = "Feat1=Val1|Feat2=Val2"
> hash = nlp.vocab.morphology.add(feats)
> assert hash == nlp.vocab.strings[feats]
> ```
| Name | Type | Description |
| ----------- | ------------------- | --------------------------- |
| `features` | `Union[Dict, str]` | The morphological features. |
## Morphology.get {#get tag="method"}
> #### Example
>
> ```python
> feats = "Feat1=Val1|Feat2=Val2"
> hash = nlp.vocab.morphology.add(feats)
> assert nlp.vocab.morphology.get(hash) == feats
> ```
Get the FEATS string for the hash of the morphological analysis.
| Name | Type | Description |
| ----------- | ------ | --------------------------------------- |
| `morph` | int | The hash of the morphological analysis. |
## Morphology.load_tag_map {#load_tag_map tag="method"}
Replace the current tag map with the provided tag map.
| Name | Type | Description |
| ----------- | ------------------ | ------------ |
| `tag_map` | `Dict[str, Dict]` | The tag map. |
## Morphology.load_morph_exceptions {#load_morph_exceptions tag="method"}
Replace the current morphological exceptions with the provided exceptions.
| Name | Type | Description |
| ------------- | ------------------ | ----------------------------- |
| `morph_rules` | `Dict[str, Dict]` | The morphological exceptions. |
## Morphology.add_special_case {#add_special_case tag="method"}
Add a special-case rule to the morphological analyzer. Tokens whose tag and
orth match the rule will receive the specified properties.
> #### Example
>
> ```python
> attrs = {"POS": "DET", "Definite": "Def"}
> morphology.add_special_case("DT", "the", attrs)
> ```
| Name | Type | Description |
| ----------- | ---- | ---------------------------------------------- |
| `tag_str` | str | The fine-grained tag. |
| `orth_str` | str | The token text. |
| `attrs` | dict | The features to assign for this token and tag. |
## Morphology.exc {#exc tag="property"}
The current morphological exceptions.
| Name | Type | Description |
| ---------- | ----- | --------------------------------------------------- |
| **YIELDS** | dict | The current dictionary of morphological exceptions. |
## Morphology.lemmatize {#lemmatize tag="method"}
TODO
## Morphology.feats_to_dict {#feats_to_dict tag="staticmethod"}
Convert a string FEATS representation to a dictionary of features and values in
the same format as the tag map.
> #### Example
>
> ```python
> from spacy.morphology import Morphology
> d = Morphology.feats_to_dict("Feat1=Val1|Feat2=Val2")
> assert d == {"Feat1": "Val1", "Feat2": "Val2"}
> ```
| Name | Type | Description |
| ----------- | ---- | ------------------------------------------------------------- |
| `feats` | str | The morphological features in Universal Dependencies FEATS format. |
| **RETURNS** | dict | The morphological features as a dictionary. |
## Morphology.dict_to_feats {#dict_to_feats tag="staticmethod"}
Convert a dictionary of features and values to a string FEATS representation.
> #### Example
>
> ```python
> from spacy.morphology import Morphology
> f = Morphology.dict_to_feats({"Feat1": "Val1", "Feat2": "Val2"})
> assert f == "Feat1=Val1|Feat2=Val2"
> ```
| Name | Type | Description |
| ------------ | ----------------- | --------------------------------------------------------------------- |
| `feats_dict` | `Dict[str, Dict]` | The morphological features as a dictionary. |
| **RETURNS** | str | The morphological features as in Universal Dependencies FEATS format. |
## Attributes {#attributes}
| Name | Type | Description |
| ------------- | ----- | -------------------------------------------- |
| `FEATURE_SEP` | `str` | The FEATS feature separator. Default is `|`. |
| `FIELD_SEP` | `str` | The FEATS field separator. Default is `=`. |
| `VALUE_SEP` | `str` | The FEATS value separator. Default is `,`. |

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@ -450,6 +450,8 @@ The L2 norm of the token's vector representation.
| `pos_` | str | Coarse-grained part-of-speech from the [Universal POS tag set](https://universaldependencies.org/docs/u/pos/). | | `pos_` | str | Coarse-grained part-of-speech from the [Universal POS tag set](https://universaldependencies.org/docs/u/pos/). |
| `tag` | int | Fine-grained part-of-speech. | | `tag` | int | Fine-grained part-of-speech. |
| `tag_` | str | Fine-grained part-of-speech. | | `tag_` | str | Fine-grained part-of-speech. |
| `morph` | `MorphAnalysis` | Morphological analysis. |
| `morph_` | str | Morphological analysis in UD FEATS format. |
| `dep` | int | Syntactic dependency relation. | | `dep` | int | Syntactic dependency relation. |
| `dep_` | str | Syntactic dependency relation. | | `dep_` | str | Syntactic dependency relation. |
| `lang` | int | Language of the parent document's vocabulary. | | `lang` | int | Language of the parent document's vocabulary. |

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@ -24,6 +24,7 @@ an **annotated document**. It also orchestrates training and serialization.
| [`Span`](/api/span) | A slice from a `Doc` object. | | [`Span`](/api/span) | A slice from a `Doc` object. |
| [`Token`](/api/token) | An individual token — i.e. a word, punctuation symbol, whitespace, etc. | | [`Token`](/api/token) | An individual token — i.e. a word, punctuation symbol, whitespace, etc. |
| [`Lexeme`](/api/lexeme) | An entry in the vocabulary. It's a word type with no context, as opposed to a word token. It therefore has no part-of-speech tag, dependency parse etc. | | [`Lexeme`](/api/lexeme) | An entry in the vocabulary. It's a word type with no context, as opposed to a word token. It therefore has no part-of-speech tag, dependency parse etc. |
| [`MorphAnalysis`](/api/morphanalysis) | A morphological analysis. |
### Processing pipeline {#architecture-pipeline} ### Processing pipeline {#architecture-pipeline}
@ -32,7 +33,7 @@ an **annotated document**. It also orchestrates training and serialization.
| [`Language`](/api/language) | A text-processing pipeline. Usually you'll load this once per process as `nlp` and pass the instance around your application. | | [`Language`](/api/language) | A text-processing pipeline. Usually you'll load this once per process as `nlp` and pass the instance around your application. |
| [`Tokenizer`](/api/tokenizer) | Segment text, and create `Doc` objects with the discovered segment boundaries. | | [`Tokenizer`](/api/tokenizer) | Segment text, and create `Doc` objects with the discovered segment boundaries. |
| [`Lemmatizer`](/api/lemmatizer) | Determine the base forms of words. | | [`Lemmatizer`](/api/lemmatizer) | Determine the base forms of words. |
| `Morphology` | Assign linguistic features like lemmas, noun case, verb tense etc. based on the word and its part-of-speech tag. | | [`Morphology`](/api/morphology) | Assign linguistic features like lemmas, noun case, verb tense etc. based on the word and its part-of-speech tag. |
| [`Tagger`](/api/tagger) | Annotate part-of-speech tags on `Doc` objects. | | [`Tagger`](/api/tagger) | Annotate part-of-speech tags on `Doc` objects. |
| [`DependencyParser`](/api/dependencyparser) | Annotate syntactic dependencies on `Doc` objects. | | [`DependencyParser`](/api/dependencyparser) | Annotate syntactic dependencies on `Doc` objects. |
| [`EntityRecognizer`](/api/entityrecognizer) | Annotate named entities, e.g. persons or products, on `Doc` objects. | | [`EntityRecognizer`](/api/entityrecognizer) | Annotate named entities, e.g. persons or products, on `Doc` objects. |

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{ "text": "StringStore", "url": "/api/stringstore" }, { "text": "StringStore", "url": "/api/stringstore" },
{ "text": "Vectors", "url": "/api/vectors" }, { "text": "Vectors", "url": "/api/vectors" },
{ "text": "Lookups", "url": "/api/lookups" }, { "text": "Lookups", "url": "/api/lookups" },
{ "text": "Morphology", "url": "/api/morphology" },
{ "text": "MorphAnalysis", "url": "/api/morphanalysis" },
{ "text": "KnowledgeBase", "url": "/api/kb" }, { "text": "KnowledgeBase", "url": "/api/kb" },
{ "text": "Scorer", "url": "/api/scorer" }, { "text": "Scorer", "url": "/api/scorer" },
{ "text": "Corpus", "url": "/api/corpus" } { "text": "Corpus", "url": "/api/corpus" }