python exec內置函數解析python代碼

 code_str = """
#coding: utf-8
binlog_source = {
'db' : 'binlog',
'table': 'canal_canal_st',
}
use_global_id = True
logical_table_list = ['applybinlog']
    """
    glo = {}
    loc = {}
    exec(code_str, glo, loc)
    print loc.keys()