def get_child_account(self, account_name):
if r'<STR_LIT:/>' in account_name:<EOL><INDENT>accs_in_path = account_name.split(r'<STR_LIT:/>', <NUM_LIT:1>)<EOL>curr_acc = self[accs_in_path[<NUM_LIT:0>]]<EOL>if curr_acc is None:<EOL><INDENT>return None<EOL><DEDENT>return curr_acc.get_child_account(accs_in_path[<NUM_LIT:1>])<EOL>pass<EOL><DEDENT>else:<EOL><INDENT>return self[account_name]<EOL><DEDENT>
Retrieves a child account.
This could be a descendant nested at any level.

:param account_name: The name of the account to retrieve.

:returns: The child account, if found, else None.