python if elif else 区别

if  data_ori=='医疗':    # 医疗    df = pd.read_excel(path_apply + 'apply/YS_ZY_HZSQ_样例.xls', encoding='gbk', error_bad_lines=False)    df=df[['HZMD']]    df=df[~df['HZMD'].isnull()]else:    # 中国日报    df = pd.read_csv(path_apply + 'apply/原始文本.txt', header=None, encoding='gbk')return df

if  data_ori=='医疗':    # 医疗    df = pd.read_excel(path_apply + 'apply/YS_ZY_HZSQ_样例.xls', encoding='gbk', error_bad_lines=False)    df=df[['HZMD']]    df=df[~df['HZMD'].isnull()]elif:    # 中国日报    df = pd.read_csv(path_apply + 'apply/原始文本.txt', header=None, encoding='gbk')    return dfif 和 elif 的区别

来源：https://www.cnblogs.com/jfdwd/p/11451878.html