class Tuple(CompositeParamType):
The default behavior of Click is to apply a type on a value directly.
This works well in most cases, except for when nargs
is set to a fixed
count and different types should be used for different items. In this
case the Tuple
type can be used. This type can only be used
if nargs
is set to a fixed number.
For more information see :ref:`tuple-type`.
This can be selected by using a Python tuple literal as a type.
Parameters | |
types | a list of types that should be used for the tuple items. |
Method | __init__ |
Undocumented |
Method | convert |
Convert the value to the correct type. This is not called if the value is None (the missing value). |
Method | to_info_dict |
Gather information that could be useful for a tool generating user-facing documentation. |
Instance Variable | types |
Undocumented |
Property | arity |
Undocumented |
Property | name |
Undocumented |
Inherited from CompositeParamType
:
Class Variable | is_composite |
Undocumented |
Inherited from ParamType
(via CompositeParamType
):
Method | __call__ |
Undocumented |
Method | fail |
Helper method to fail with an invalid value message. |
Method | get_metavar |
Returns the metavar default for this param if it provides one. |
Method | get_missing_message |
Optionally might return extra information about a missing parameter. |
Method | shell_complete |
No summary |
Method | split_envvar_value |
Given a value from an environment variable this splits it up into small chunks depending on the defined envvar list splitter. |
Class Variable | envvar_list_splitter |
Undocumented |
Undocumented
Parameters | |
types:t.Sequence[ | Undocumented |
click.types.ParamType.convert
Convert the value to the correct type. This is not called if the value is None (the missing value).
This must accept string values from the command line, as well as values that are already the correct type. It may also convert other compatible types.
The param and ctx arguments may be None in certain situations, such as when converting prompt input.
If the value cannot be converted, call fail
with a
descriptive message.
Parameters | |
value:t.Any | The value to convert. |
param:t.Optional[ | The parameter that is using this type to convert its value. May be None. |
ctx:t.Optional[ | The current context that arrived at this value. May be None. |
Returns | |
t.Any | Undocumented |
click.types.ParamType.to_info_dict
Gather information that could be useful for a tool generating user-facing documentation.
Use click.Context.to_info_dict
to traverse the entire
CLI structure.
Returns | |
t.Dict[ | Undocumented |