def get_from_env_or_user_or_default(environ_cp, var_name, ask_for_var,
                                    var_default):
  """Get var_name either from env, or user or default.

  If var_name has been set as environment variable, use the preset value, else
  ask for user input. If no input is provided, the default is used.

  Args:
    environ_cp: copy of the os.environ.

std::string TemporaryVariableName(
    const std::string& var_name,
    const tensorflow::FrameAndIter& control_frame) {
  if (control_frame.frame_id != tensorflow::kIllegalFrameId &&
      control_frame.iter_id != tensorflow::kIllegalIterId) {
    return tensorflow::strings::StrCat(var_name,
                                       "/frame:", control_frame.frame_id,

	// Variable references $(VAR_NAME) are expanded using the container's environment.  If a variable
	// cannot be resolved, the reference in the input string will be unchanged.  Double $$ are reduced
	// to a single $, which allows for escaping the $(VAR_NAME) syntax: i.e. "$$(VAR_NAME)" will
	// produce the string literal "$(VAR_NAME)".  Escaped references will never be expanded, regardless

within a shell. The container image's ENTRYPOINT is used if this is not provided. Variable references $(VAR_NAME) are expanded using the container's environment. If a variable cannot be resolved, the reference in the input string will be unchanged. Double $$ are reduced to a single $, which allows for escaping the $(VAR_NAME) syntax: i.e. \"$$(VAR_NAME)\" will produce the string literal \"$(VAR_NAME)\". Escaped references will never be expanded, regardless of whether the variable exists or not. Cannot...

  // Variable references $(VAR_NAME) are expanded using the container's environment. If a variable
  // cannot be resolved, the reference in the input string will be unchanged. Double $$ are reduced
  // to a single $, which allows for escaping the $(VAR_NAME) syntax: i.e. "$$(VAR_NAME)" will
  // produce the string literal "$(VAR_NAME)". Escaped references will never be expanded, regardless

	// Variable references $(VAR_NAME) are expanded using the container's environment. If a variable
	// cannot be resolved, the reference in the input string will be unchanged. Double $$ are reduced
	// to a single $, which allows for escaping the $(VAR_NAME) syntax: i.e. "$$(VAR_NAME)" will
	// produce the string literal "$(VAR_NAME)". Escaped references will never be expanded, regardless

"Arguments to the entrypoint. The container image's CMD is used if this is not provided. Variable references $(VAR_NAME) are expanded using the container's environment. If a variable cannot be resolved, the reference in the input string will be unchanged. Double $$ are reduced to a single $, which allows for escaping the $(VAR_NAME) syntax: i.e. \"$$(VAR_NAME)\" will produce the string literal \"$(VAR_NAME)\". Escaped references will never be expanded, regardless of whether the variable exists or not. Cannot...

  """
  variable_nodes = {}

  for var_node in filter(_is_variable, graph_def.node):
    shared_name = str(var_node.attr['shared_name'].s, encoding='utf-8')
    variable_nodes[shared_name] = var_node

  for func in graph_def.library.function:
    for var_node in filter(_is_variable, func.node_def):
      variable_nodes[shared_name] = var_node

  return variable_nodes

"Arguments to the entrypoint. The container image's CMD is used if this is not provided. Variable references $(VAR_NAME) are expanded using the container's environment. If a variable cannot be resolved, the reference in the input string will be unchanged. Double $$ are reduced to a single $, which allows for escaping the $(VAR_NAME) syntax: i.e. \"$$(VAR_NAME)\" will produce the string literal \"$(VAR_NAME)\". Escaped references will never be expanded, regardless of whether the variable exists or not. Cannot...

RUN_CCM_CONTROLLERS: $(yaml-quote "${RUN_CCM_CONTROLLERS}")
EOF
  fi
  if [ -n "${PROVIDER_VARS:-}" ]; then
    local var_name
    local var_value

    for var_name in ${PROVIDER_VARS}; do
      eval "local var_value=\$(yaml-quote \${${var_name}})"
      cat >>"$file" <<EOF
${var_name}: ${var_value}
EOF
    done
  fi

  if [[ "${master}" == "true" ]]; then
    # Master-only env vars.