def p_function_call_parameter(p):
'''function_call_parameter : expr
| AND variable'''
if len(p) == 2:
p[0] = ast.Parameter(p[1], False, lineno=p.lineno(1))
else:
p[0] = ast.Parameter(p[2], True, lineno=p.lineno(1))
def p_function_call_backtick_shell_exec(p):
'function_call : BACKTICK encaps_list BACKTICK'
p[0] = ast.FunctionCall('shell_exec', [ast.Parameter(p[2], False)],
lineno=p.lineno(1))