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< h1 > Using pokedex< a class = "headerlink" href = "#using-pokedex" title = "Permalink to this headline" > ¶< / a > < / h1 >
< p > The pokédex is, first and foremost, a Python library. To get the most of it,
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you’ ll need to learn < a class = "reference external" href = "http://www.python.org" > Python< / a > and < a class = "reference external" href = "http://www.sqlalchemy.org" > SQLAlchemy< / a > .< / p >
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< p > Here is a small example of using pokedex:< / p >
< div class = "highlight-python" > < div class = "highlight" > < pre > < span class = "kn" > from< / span > < span class = "nn" > pokedex.db< / span > < span class = "kn" > import< / span > < span class = "n" > connect< / span > < span class = "p" > ,< / span > < span class = "n" > tables< / span > < span class = "p" > ,< / span > < span class = "n" > util< / span >
< span class = "n" > session< / span > < span class = "o" > =< / span > < span class = "n" > connect< / span > < span class = "p" > ()< / span >
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< span class = "n" > pokemon< / span > < span class = "o" > =< / span > < span class = "n" > util< / span > < span class = "o" > .< / span > < span class = "n" > get< / span > < span class = "p" > (< / span > < span class = "n" > session< / span > < span class = "p" > ,< / span > < span class = "n" > tables< / span > < span class = "o" > .< / span > < span class = "n" > PokemonSpecies< / span > < span class = "p" > ,< / span > < span class = "s" > u' bulbasaur' < / span > < span class = "p" > )< / span >
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< span class = "k" > print< / span > < span class = "s" > u' {0.name}, the {0.genus} Pokemon' < / span > < span class = "o" > .< / span > < span class = "n" > format< / span > < span class = "p" > (< / span > < span class = "n" > pokemon< / span > < span class = "p" > )< / span >
< / pre > < / div >
< / div >
< p > Running this will give you some Bulbasaur info:< / p >
< div class = "highlight-none" > < div class = "highlight" > < pre > Bulbasaur, the Seed Pokemon
< / pre > < / div >
< / div >
< div class = "section" id = "connecting" >
< h2 > Connecting< a class = "headerlink" href = "#connecting" title = "Permalink to this headline" > ¶< / a > < / h2 >
< p > To get information out of the Pokédex, you will need to create a
< tt class = "xref py py-class docutils literal" > < span class = "pre" > Session< / span > < / tt > . To do that, use
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< a class = "reference internal" href = "#pokedex.db.connect" title = "pokedex.db.connect" > < tt class = "xref py py-func docutils literal" > < span class = "pre" > pokedex.db.connect()< / span > < / tt > < / a > . For simple uses, you don’ t need to give it any
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arguments: it uses the database that < tt class = "docutils literal" > < span class = "pre" > pokedex< / span > < span class = "pre" > load< / span > < / tt > fills up by default. If
you need to select another database, give its URI as the first argument.< / p >
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< p > The object < a class = "reference internal" href = "#pokedex.db.connect" title = "pokedex.db.connect" > < tt class = "xref py py-func docutils literal" > < span class = "pre" > connect()< / span > < / tt > < / a > gives you is actually a
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< a class = "reference external" href = "http://www.sqlalchemy.org/docs/orm/session.html#sqlalchemy.orm.session.Session" title = "(in SQLAlchemy v0.9)" > < tt class = "xref py py-class docutils literal" > < span class = "pre" > SQLAlchemy< / span > < span class = "pre" > session< / span > < / tt > < / a > , giving you the
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full power of SQLAlchemy for working with the data. We’ ll cover some basics
here, but if you intend to do some serious work, do read SQLAlchemy’ s docs.< / p >
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< / div >
< div class = "section" id = "pokedex-tables" >
< h2 > Pokédex tables< a class = "headerlink" href = "#pokedex-tables" title = "Permalink to this headline" > ¶< / a > < / h2 >
< p > Data in the pokédex is organized in tables, defined in
< a class = "reference internal" href = "main-tables.html#module-pokedex.db.tables" title = "pokedex.db.tables" > < tt class = "xref py py-mod docutils literal" > < span class = "pre" > pokedex.db.tables< / span > < / tt > < / a > .
There is quite a few or them. To get you started, here are a few common ones:< / p >
< ul class = "simple" >
< li > < a class = "reference internal" href = "main-tables.html#pokedex.db.tables.PokemonSpecies" title = "pokedex.db.tables.PokemonSpecies" > < tt class = "xref py py-class docutils literal" > < span class = "pre" > PokemonSpecies< / span > < / tt > < / a > < / li >
< li > < a class = "reference internal" href = "main-tables.html#pokedex.db.tables.Move" title = "pokedex.db.tables.Move" > < tt class = "xref py py-class docutils literal" > < span class = "pre" > Move< / span > < / tt > < / a > < / li >
< li > < a class = "reference internal" href = "main-tables.html#pokedex.db.tables.Item" title = "pokedex.db.tables.Item" > < tt class = "xref py py-class docutils literal" > < span class = "pre" > Item< / span > < / tt > < / a > < / li >
< li > < a class = "reference internal" href = "main-tables.html#pokedex.db.tables.Type" title = "pokedex.db.tables.Type" > < tt class = "xref py py-class docutils literal" > < span class = "pre" > Type< / span > < / tt > < / a > < / li >
< / ul >
< / div >
< div class = "section" id = "getting-things" >
< h2 > Getting things< a class = "headerlink" href = "#getting-things" title = "Permalink to this headline" > ¶< / a > < / h2 >
< p > If you know what you want from the pokédex, you can use the
< a class = "reference internal" href = "#pokedex.db.util.get" title = "pokedex.db.util.get" > < tt class = "xref py py-func docutils literal" > < span class = "pre" > pokedex.db.util.get()< / span > < / tt > < / a > function. It looks up a thing in a table, based on
its identifier, name, or ID, and returns it.< / p >
< div class = "highlight-python" > < div class = "highlight" > < pre > < span class = "k" > def< / span > < span class = "nf" > print_pokemon< / span > < span class = "p" > (< / span > < span class = "n" > pokemon< / span > < span class = "p" > ):< / span >
< span class = "k" > print< / span > < span class = "s" > u' {0.name}, the {0.genus} Pokemon' < / span > < span class = "o" > .< / span > < span class = "n" > format< / span > < span class = "p" > (< / span > < span class = "n" > pokemon< / span > < span class = "p" > )< / span >
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< span class = "n" > print_pokemon< / span > < span class = "p" > (< / span > < span class = "n" > util< / span > < span class = "o" > .< / span > < span class = "n" > get< / span > < span class = "p" > (< / span > < span class = "n" > session< / span > < span class = "p" > ,< / span > < span class = "n" > tables< / span > < span class = "o" > .< / span > < span class = "n" > PokemonSpecies< / span > < span class = "p" > ,< / span > < span class = "n" > identifier< / span > < span class = "o" > =< / span > < span class = "s" > u' eevee' < / span > < span class = "p" > ))< / span >
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< span class = "n" > print_pokemon< / span > < span class = "p" > (< / span > < span class = "n" > util< / span > < span class = "o" > .< / span > < span class = "n" > get< / span > < span class = "p" > (< / span > < span class = "n" > session< / span > < span class = "p" > ,< / span > < span class = "n" > tables< / span > < span class = "o" > .< / span > < span class = "n" > PokemonSpecies< / span > < span class = "p" > ,< / span > < span class = "n" > name< / span > < span class = "o" > =< / span > < span class = "s" > u' Ho-Oh' < / span > < span class = "p" > ))< / span >
< span class = "n" > print_pokemon< / span > < span class = "p" > (< / span > < span class = "n" > util< / span > < span class = "o" > .< / span > < span class = "n" > get< / span > < span class = "p" > (< / span > < span class = "n" > session< / span > < span class = "p" > ,< / span > < span class = "n" > tables< / span > < span class = "o" > .< / span > < span class = "n" > PokemonSpecies< / span > < span class = "p" > ,< / span > < span class = "nb" > id< / span > < span class = "o" > =< / span > < span class = "mi" > 50< / span > < span class = "p" > ))< / span >
< span class = "k" > def< / span > < span class = "nf" > print_item< / span > < span class = "p" > (< / span > < span class = "n" > item< / span > < span class = "p" > ):< / span >
< span class = "k" > print< / span > < span class = "s" > u' {0.name}: ${0.cost}' < / span > < span class = "o" > .< / span > < span class = "n" > format< / span > < span class = "p" > (< / span > < span class = "n" > item< / span > < span class = "p" > )< / span >
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< span class = "n" > print_item< / span > < span class = "p" > (< / span > < span class = "n" > util< / span > < span class = "o" > .< / span > < span class = "n" > get< / span > < span class = "p" > (< / span > < span class = "n" > session< / span > < span class = "p" > ,< / span > < span class = "n" > tables< / span > < span class = "o" > .< / span > < span class = "n" > Item< / span > < span class = "p" > ,< / span > < span class = "n" > identifier< / span > < span class = "o" > =< / span > < span class = "s" > u' great-ball' < / span > < span class = "p" > ))< / span >
< span class = "n" > print_item< / span > < span class = "p" > (< / span > < span class = "n" > util< / span > < span class = "o" > .< / span > < span class = "n" > get< / span > < span class = "p" > (< / span > < span class = "n" > session< / span > < span class = "p" > ,< / span > < span class = "n" > tables< / span > < span class = "o" > .< / span > < span class = "n" > Item< / span > < span class = "p" > ,< / span > < span class = "n" > name< / span > < span class = "o" > =< / span > < span class = "s" > u' Potion' < / span > < span class = "p" > ))< / span >
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< span class = "n" > print_item< / span > < span class = "p" > (< / span > < span class = "n" > util< / span > < span class = "o" > .< / span > < span class = "n" > get< / span > < span class = "p" > (< / span > < span class = "n" > session< / span > < span class = "p" > ,< / span > < span class = "n" > tables< / span > < span class = "o" > .< / span > < span class = "n" > Item< / span > < span class = "p" > ,< / span > < span class = "nb" > id< / span > < span class = "o" > =< / span > < span class = "mi" > 30< / span > < span class = "p" > ))< / span >
< / pre > < / div >
< / div >
< div class = "highlight-none" > < div class = "highlight" > < pre > Eevee, the Evolution Pokemon
Ho-Oh, the Rainbow Pokemon
Diglett, the Mole Pokemon
Great Ball: $600
Potion: $300
Fresh Water: $200
< / pre > < / div >
< / div >
< / div >
< div class = "section" id = "querying" >
< h2 > Querying< a class = "headerlink" href = "#querying" title = "Permalink to this headline" > ¶< / a > < / h2 >
< p > So, how do you get data from the session? You use the session’ s
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< a class = "reference external" href = "http://www.sqlalchemy.org/docs/orm/session.html#sqlalchemy.orm.session.Session.query" title = "(in SQLAlchemy v0.9)" > < tt class = "xref py py-meth docutils literal" > < span class = "pre" > query()< / span > < / tt > < / a > method, and give it a pokédex
Table as an argument. This will give you a < a class = "reference external" href = "http://www.sqlalchemy.org/docs/orm/query.html#sqlalchemy.orm.query.Query" title = "(in SQLAlchemy v0.9)" > < tt class = "xref py py-class docutils literal" > < span class = "pre" > SQLAlchemy< / span > < span class = "pre" > query< / span > < / tt > < / a > .< / p >
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< div class = "section" id = "ordering" >
< h3 > Ordering< a class = "headerlink" href = "#ordering" title = "Permalink to this headline" > ¶< / a > < / h3 >
< p > As always with SQL, you should not rely on query results being in some
particular order –
you’ ll want to sort just about every query you will make.< / p >
< p > For example, you can get a list of all pokémon species, sorted by their
< tt class = "xref py py-attr docutils literal" > < span class = "pre" > id< / span > < / tt > , like so:< / p >
< div class = "highlight-python" > < div class = "highlight" > < pre > < span class = "k" > for< / span > < span class = "n" > pokemon< / span > < span class = "ow" > in< / span > < span class = "n" > session< / span > < span class = "o" > .< / span > < span class = "n" > query< / span > < span class = "p" > (< / span > < span class = "n" > tables< / span > < span class = "o" > .< / span > < span class = "n" > PokemonSpecies< / span > < span class = "p" > )< / span > < span class = "o" > .< / span > < span class = "n" > order_by< / span > < span class = "p" > (< / span > < span class = "n" > tables< / span > < span class = "o" > .< / span > < span class = "n" > PokemonSpecies< / span > < span class = "o" > .< / span > < span class = "n" > id< / span > < span class = "p" > ):< / span >
< span class = "k" > print< / span > < span class = "n" > pokemon< / span > < span class = "o" > .< / span > < span class = "n" > name< / span >
< / pre > < / div >
< / div >
< div class = "highlight-none" > < div class = "highlight" > < pre > Bulbasaur
Ivysaur
Venusaur
Charmander
Charmeleon
...
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Xerneas
Yveltal
Zygarde
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< / pre > < / div >
< / div >
< p > Or to order by < tt class = "xref py py-attr docutils literal" > < span class = "pre" > name< / span > < / tt > :< / p >
< div class = "highlight-python" > < div class = "highlight" > < pre > < span class = "k" > for< / span > < span class = "n" > pokemon< / span > < span class = "ow" > in< / span > < span class = "n" > session< / span > < span class = "o" > .< / span > < span class = "n" > query< / span > < span class = "p" > (< / span > < span class = "n" > tables< / span > < span class = "o" > .< / span > < span class = "n" > PokemonSpecies< / span > < span class = "p" > )< / span > < span class = "o" > .< / span > < span class = "n" > order_by< / span > < span class = "p" > (< / span > < span class = "n" > tables< / span > < span class = "o" > .< / span > < span class = "n" > PokemonSpecies< / span > < span class = "o" > .< / span > < span class = "n" > name< / span > < span class = "p" > ):< / span >
< span class = "k" > print< / span > < span class = "n" > pokemon< / span > < span class = "o" > .< / span > < span class = "n" > name< / span >
< / pre > < / div >
< / div >
< div class = "highlight-none" > < div class = "highlight" > < pre > Abomasnow
...
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Zygarde
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< / pre > < / div >
< / div >
< / div >
< div class = "section" id = "filtering" >
< h3 > Filtering< a class = "headerlink" href = "#filtering" title = "Permalink to this headline" > ¶< / a > < / h3 >
< p > Another major operation on queries is filtering, using the query’ s
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< a class = "reference external" href = "http://www.sqlalchemy.org/docs/orm/query.html#sqlalchemy.orm.query.Query.filter" title = "(in SQLAlchemy v0.9)" > < tt class = "xref py py-meth docutils literal" > < span class = "pre" > filter()< / span > < / tt > < / a > or
< a class = "reference external" href = "http://www.sqlalchemy.org/docs/orm/query.html#sqlalchemy.orm.query.Query.filter_by" title = "(in SQLAlchemy v0.9)" > < tt class = "xref py py-meth docutils literal" > < span class = "pre" > filter_by()< / span > < / tt > < / a > methods:< / p >
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< div class = "highlight-python" > < div class = "highlight" > < pre > < span class = "k" > for< / span > < span class = "n" > move< / span > < span class = "ow" > in< / span > < span class = "n" > session< / span > < span class = "o" > .< / span > < span class = "n" > query< / span > < span class = "p" > (< / span > < span class = "n" > tables< / span > < span class = "o" > .< / span > < span class = "n" > Move< / span > < span class = "p" > )< / span > < span class = "o" > .< / span > < span class = "n" > filter< / span > < span class = "p" > (< / span > < span class = "n" > tables< / span > < span class = "o" > .< / span > < span class = "n" > Move< / span > < span class = "o" > .< / span > < span class = "n" > power< / span > < span class = "o" > > < / span > < span class = "mi" > 200< / span > < span class = "p" > ):< / span >
< span class = "k" > print< / span > < span class = "n" > move< / span > < span class = "o" > .< / span > < span class = "n" > name< / span >
< / pre > < / div >
< / div >
< div class = "highlight-none" > < div class = "highlight" > < pre > Explosion
< / pre > < / div >
< / div >
< / div >
< div class = "section" id = "joining" >
< h3 > Joining< a class = "headerlink" href = "#joining" title = "Permalink to this headline" > ¶< / a > < / h3 >
< p > The final operation we’ ll cover here is joining other tables to the query,
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using the query’ s < a class = "reference external" href = "http://www.sqlalchemy.org/docs/orm/query.html#sqlalchemy.orm.query.Query.join" title = "(in SQLAlchemy v0.9)" > < tt class = "xref py py-meth docutils literal" > < span class = "pre" > join()< / span > < / tt > < / a > .
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You will usually want to join on a relationship, such as in the following
example:< / p >
< div class = "highlight-python" > < div class = "highlight" > < pre > < span class = "n" > query< / span > < span class = "o" > =< / span > < span class = "n" > session< / span > < span class = "o" > .< / span > < span class = "n" > query< / span > < span class = "p" > (< / span > < span class = "n" > tables< / span > < span class = "o" > .< / span > < span class = "n" > Move< / span > < span class = "p" > )< / span >
< span class = "n" > query< / span > < span class = "o" > =< / span > < span class = "n" > query< / span > < span class = "o" > .< / span > < span class = "n" > join< / span > < span class = "p" > (< / span > < span class = "n" > tables< / span > < span class = "o" > .< / span > < span class = "n" > Move< / span > < span class = "o" > .< / span > < span class = "n" > type< / span > < span class = "p" > )< / span >
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< span class = "n" > query< / span > < span class = "o" > =< / span > < span class = "n" > query< / span > < span class = "o" > .< / span > < span class = "n" > filter< / span > < span class = "p" > (< / span > < span class = "n" > tables< / span > < span class = "o" > .< / span > < span class = "n" > Type< / span > < span class = "o" > .< / span > < span class = "n" > identifier< / span > < span class = "o" > ==< / span > < span class = "s" > u' grass' < / span > < span class = "p" > )< / span >
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< span class = "n" > query< / span > < span class = "o" > =< / span > < span class = "n" > query< / span > < span class = "o" > .< / span > < span class = "n" > filter< / span > < span class = "p" > (< / span > < span class = "n" > tables< / span > < span class = "o" > .< / span > < span class = "n" > Move< / span > < span class = "o" > .< / span > < span class = "n" > power< / span > < span class = "o" > > =< / span > < span class = "mi" > 100< / span > < span class = "p" > )< / span >
< span class = "n" > query< / span > < span class = "o" > =< / span > < span class = "n" > query< / span > < span class = "o" > .< / span > < span class = "n" > order_by< / span > < span class = "p" > (< / span > < span class = "n" > tables< / span > < span class = "o" > .< / span > < span class = "n" > Move< / span > < span class = "o" > .< / span > < span class = "n" > power< / span > < span class = "p" > )< / span >
< span class = "n" > query< / span > < span class = "o" > =< / span > < span class = "n" > query< / span > < span class = "o" > .< / span > < span class = "n" > order_by< / span > < span class = "p" > (< / span > < span class = "n" > tables< / span > < span class = "o" > .< / span > < span class = "n" > Move< / span > < span class = "o" > .< / span > < span class = "n" > name< / span > < span class = "p" > )< / span >
< span class = "k" > print< / span > < span class = "s" > ' The most powerful Grass-type moves:' < / span >
< span class = "k" > for< / span > < span class = "n" > move< / span > < span class = "ow" > in< / span > < span class = "n" > query< / span > < span class = "p" > :< / span >
< span class = "k" > print< / span > < span class = "s" > u' {0.name} ({0.power})' < / span > < span class = "o" > .< / span > < span class = "n" > format< / span > < span class = "p" > (< / span > < span class = "n" > move< / span > < span class = "p" > )< / span >
< / pre > < / div >
< / div >
< div class = "highlight-none" > < div class = "highlight" > < pre > The most powerful Grass-type moves:
Petal Dance (120)
Power Whip (120)
Seed Flare (120)
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Solar Beam (120)
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Wood Hammer (120)
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Leaf Storm (130)
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Frenzy Plant (150)
< / pre > < / div >
< / div >
< p > That concludes our brief tutorial.
If you need to do more, consult the < a class = "reference external" href = "http://www.sqlalchemy.org/docs/orm/tutorial.html" > SQLAlchemy documentation< / a > .< / p >
< / div >
< / div >
< div class = "section" id = "api-documentation" >
< h2 > API documentation< a class = "headerlink" href = "#api-documentation" title = "Permalink to this headline" > ¶< / a > < / h2 >
< dl class = "function" >
< dt id = "pokedex.db.connect" >
< tt class = "descclassname" > pokedex.db.< / tt > < tt class = "descname" > connect< / tt > < big > (< / big > < em > uri=None< / em > , < em > session_args={}< / em > , < em > engine_args={}< / em > , < em > engine_prefix=''< / em > < big > )< / big > < a class = "headerlink" href = "#pokedex.db.connect" title = "Permalink to this definition" > ¶< / a > < / dt >
< dd > < p > Connects to the requested URI. Returns a session object.< / p >
< p > With the URI omitted, attempts to connect to a default SQLite database
contained within the package directory.< / p >
< p > Calling this function also binds the metadata object to the created engine.< / p >
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< p > See < a class = "reference external" href = "http://www.sqlalchemy.org/docs/orm/session.html#sqlalchemy.orm.session.Session" title = "(in SQLAlchemy v0.9)" > < tt class = "xref py py-class docutils literal" > < span class = "pre" > sqlalchemy.orm.session.Session< / span > < / tt > < / a > for more documentation on the
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returned object.< / p >
< / dd > < / dl >
< dl class = "function" >
< dt id = "pokedex.db.util.get" >
< tt class = "descclassname" > pokedex.db.util.< / tt > < tt class = "descname" > get< / tt > < big > (< / big > < em > session< / em > , < em > table< / em > , < em > identifier=None< / em > , < em > name=None< / em > , < em > id=None< / em > , < em > language=None< / em > < big > )< / big > < a class = "headerlink" href = "#pokedex.db.util.get" title = "Permalink to this definition" > ¶< / a > < / dt >
< dd > < p > Get one object from the database.< / p >
< p > session: The session to use (from pokedex.db.connect())
table: The table to select from (such as pokedex.db.tables.Move)< / p >
< p > identifier: Identifier of the object
name: The name of the object
id: The ID number of the object< / p >
< p > language: A Language to use for name and form_name< / p >
< p > All conditions must match, so it’ s not a good idea to specify more than one
of identifier/name/id at once.< / p >
< p > If zero or more than one objects matching the criteria are found, the
appropriate SQLAlchemy exception is raised.< / p >
< / dd > < / dl >
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< / div >
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< / div >
< div class = "sphinxsidebar" >
< div class = "sphinxsidebarwrapper" >
< h3 > < a href = "index.html" > Table Of Contents< / a > < / h3 >
< ul >
< li > < a class = "reference internal" href = "#" > Using pokedex< / a > < ul >
< li > < a class = "reference internal" href = "#connecting" > Connecting< / a > < / li >
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< li > < a class = "reference internal" href = "#pokedex-tables" > Pokédex tables< / a > < / li >
< li > < a class = "reference internal" href = "#getting-things" > Getting things< / a > < / li >
< li > < a class = "reference internal" href = "#querying" > Querying< / a > < ul >
< li > < a class = "reference internal" href = "#ordering" > Ordering< / a > < / li >
< li > < a class = "reference internal" href = "#filtering" > Filtering< / a > < / li >
< li > < a class = "reference internal" href = "#joining" > Joining< / a > < / li >
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< li > < a class = "reference internal" href = "#api-documentation" > API documentation< / a > < / li >
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