tf.compat.v1.flags.declare_key_flag

Declares one flag as key to the current module.

tf.compat.v1.flags.declare_key_flag(
    flag_name, flag_values=_flagvalues.FLAGS
)

Key flags are flags that are deemed really important for a module. They are important when listing help messages; e.g., if the --helpshort command-line flag is used, then only the key flags of the main module are listed (instead of all flags, as in the case of --helpfull).

Sample usage::

flags.declare_key_flag('flag_1')

flag_name str | :class:FlagHolder, the name or holder of an already declared flag. (Redeclaring flags as key, including flags implicitly key because they were declared in this module, is a no-op.) Positional-only parameter.
flag_values :class:FlagValues, the FlagValues instance in which the flag will be declared as a key flag. This should almost never need to be overridden.

ValueError Raised if flag_name not defined as a Python flag.