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class BaseDatabaseClient:
"""Encapsulate backend-specific methods for opening a client shell."""
# This should be a string representing the name of the executable
# (e.g., "psql"). Subclasses must override this.
executable_name = None
def __init__(self, connection):
# connection is an instance of BaseDatabaseWrapper.
self.connection = connection
def runshell(self, parameters):
raise NotImplementedError('subclasses of BaseDatabaseClient must provide a runshell() method')
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