How to use the plac.ReadlineInput function in plac
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micheles / plac / doc / sql_interface.py View on Github 
COMPLETIONS = SQLKEYWORDS | DBTABLES
class SqlInterface(object):
commands = ['SELECT']
def __init__(self, dsn):
self.soup = SQLSoup(dsn)
def SELECT(self, argstring):
sql = 'SELECT ' + argstring
for row in self.soup.bind.execute(sql):
yield str(row) # the formatting can be much improved
rl_input = plac.ReadlineInput(
COMPLETIONS, histfile=os.path.expanduser('~/.sql_interface.history'),
case_sensitive=False)
def split_on_first_space(line, commentchar):
return line.strip().split(' ', 1) # ignoring comments
if __name__ == '__main__':
plac.Interpreter.call(SqlInterface, split=split_on_first_space,
stdin=rl_input, prompt='sql> ')plac
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