import fdb
import os

ruta = 'localhost:C:/Users/Beto/Documents/Proyectos python/Ruby/sama.fdb'

try:
    con = fdb.connect(
    dsn = ruta,
    user = 'sysdba',
    password = '*******',
    charset = 'utf-8'
    )
    print('Conectado !!')
except:
    print('Fallo la conexion', ruta)



cx = con.cursor()
sql = 'SELECT * FROM user'
cx.execute(sql)

filas = cx.fetchall()
print(filas)
con.commit()
con.close()

Traceback (most recent call last):
  File "C:UsersBetoDocumentsProyectos pythonRubyfire.py", line 22, in <module>
    cx.execute(sql)
  File "C:UsersBetoAppDataLocalProgramsPythonPython35libsite-packagesfdbfbcore.py", line 3573, in execute
    self._ps = PreparedStatement(operation, self, True)
  File "C:UsersBetoAppDataLocalProgramsPythonPython35libsite-packagesfdbfbcore.py", line 2182, in __init__
    "Error while preparing SQL statement:")
fdb.fbcore.DatabaseError: ('Error while preparing SQL statement:n- SQLCODE: -104n- Dynamic SQL Errorn- SQL error code = -104n- Token unknown - line 1, column 15n- user', -104, 335544569)