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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')
| Args | |
|---|---|
flag_name | 
      str, the name of an already declared flag. (Redeclaring flags as key, including flags implicitly key because they were declared in this module, is a no-op.) | 
flag_values | 
      FlagValues, the FlagValues instance in which the flag will be declared as a key flag. This should almost never need to be overridden. | 
| Raises | |
|---|---|
ValueError | 
      Raised if flag_name not defined as a Python flag. | 
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Licensed under the Creative Commons Attribution License 3.0.
Code samples licensed under the Apache 2.0 License.
 https://www.tensorflow.org/versions/r2.3/api_docs/python/tf/compat/v1/flags/declare_key_flag