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Predicate key/2
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SWI-Prolog Python interface
library(janus): Call Python from Prolog
py_version/0
py_call/1
py_call/2
py_call/3
py_iter/2
py_iter/3
py_setattr/3
py_is_object/1
py_is_dict/1
py_free/1
py_with_gil/1
py_gil_owner/1
py_func/3
py_func/4
py_dot/3
py_dot/4
values/3
keys/2
key/2
items/2
py_shell/0
py_pp/1
py_pp/2
py_pp/3
py_object_dir/2
py_object_dict/2
py_obj_dir/2
py_obj_dict/2
py_type/2
py_isinstance/2
py_module_exists/1
py_hasattr/2
py_import/2
py_module/2
py_initialize/3
py_lib_dirs/1
py_add_lib_dir/1
py_add_lib_dir/2
Handling Python errors in Prolog
Calling and data translation errors
Janus and virtual environments (venv)
Availability:
:- use_module(
library(janus)
).
(can be autoloaded)
[nondet]
key
(
+Dict, ?Key
)
True when
Key
is a key in
Dict
. Backtracking enumerates all known keys.
Compatibility
PIP. Note that this predicate handle a SWI-Prolog dict, a {k:v, ...} term as well as py({k:v, ...}.