创建并附加到SQLAlchemy数据库表中的列表

我正在学习SQLAlchemy而且我被困住了.我有一个SQL表(table1)有两个字段:'name'和'other_names'

我有一个包含两列的excel文件:

first_name alias   
paul   patrick
john   joe
simon  simone
john   joey
john   jo

我想将excel文件读入我的table1创建数据库表,所以它看起来像这样(即同一行的所有别名都在一行):

paul    patrick
john    joe,joey,jo
simon   simone

这是我试图做的想法.我试过的代码(带注释):

for line in open('file.txt', 'r'): #for each line in the excel file
        line = line.strip().split('\t') #split each line with a name and alias
        first_name = line[0] #first name is the name before the tab
        alias = line[1] #alias is the name after the tab
        instance = 
        Session.query(session,tbs['table1'].name).filter_by(name=first_name) #look through the database table, by name field, and see if the first name is there 
        list_instance = [x[0] for x in instance] #make a list of first names already in database table
        if first_name not in list_instance: #if the excel first name is not in the database table
              alias_list = [] #make an empty list
              alias_list.append(alias) #append the alias
              name_obj = lib.get_or_create( #small function to make db object
              session,
              tbs["table1"],
              name = first_name, #add first name to the name field
              other_names = alias_list # add alias list to the other_names field
            )
       elif first_name in list_instance: #elif first name already in db
             alias_list.append(alias) #append the alias to the alias list made above
             name_obj = lib.get_or_create(
             session,
             tbs["table1"],
             name = first_name,
             other_names = alias_list #create object as before, but use updated alias list
    )

问题是我可以让上面的代码运行没有错误,但输出也不是附加列表,它只是一个看起来像excel文件的数据库表; 即

name   alias
paul   patrick
john   joe
simon  simone
john   joey
john   jo

有人可以指出我哪里出错了,具体来说,我该如何修改这段代码？如果问题不清楚,请告诉我,我试着把它作为一个简单的例子.具体来说,如何初始化并将列表添加为SQLalchemy db表中的字段条目.

更新1:我已根据下面的实际建议更新了我的代码.但是我仍然有这个问题.这是完整的目标,代码和测试文件:目标:

我在数据库中有一个表(参见下面的测试文件进入表格).该表有两个字段,名称(拉丁名称,例如智人)和其他名称(常用名称,例如人,人).我想更新表中的字段(其他名称),所以不要:

Rana rugosa human   
Rana rugosa man 
Rana rugosa frog    
Rana rugosa cow

我有:

Rana rugosa human,man,frog,cow

test_data文件如下所示:

origin_organism        common_name         tested_organism
Rana rugosa            human                -
Rana rugosa            man                  -
Rana rugosa            frog                 homo sapiens
Rana rugosa            cow                  Rana rugosa
Rana rugosa            frog                 Rana rugosa
Rana rugosa            frog                 -
Rana rugosa            frog                 -
Rana rugosa            frog                homo sapiens
-                      -                   -
-                      -                   homo sapiens
-                      -                   -
-                      -                   -
-                      -                   -
-                      -                   -
streptococcus pneumoniae    -              -

代码:

import sys 
from sqlalchemy.orm  import * 
from sqlalchemy  import * 
from dbn.sqlalchemy_module  import lib 
import pd
engine = lib.get_engine(user="user", psw="pwd", db="db", db_host="111.111.111.11")
Base = lib.get_automapped_base(engine)
session = Session(engine)
tbs = lib.get_mapped_classes(Base)
session.rollback()
df = pd.read_excel('test_data.xlsx', sheet_name = 'test2')
for index, row in df.iterrows():  
    origin_latin_name = row['origin_organism'].strip().lower()
    other_names_name = row['common_name'].strip().lower()
    tested_species = row['tested_organism'].strip().lower()
if origin_latin_name not in [None, "None", "", "-"]:
    instance = [x[0] for x in Session.query(session,tbs['species'].name).filter_by(name=origin_latin_name).all()]
    if origin_latin_name not in instance:
        origin_species = lib.get_or_create(
            session,
            tbs["species"],
            name = origin_latin_name,
            other_names = other_names_name
        )
    elif origin_latin_name in instance:
        other_names_query = Session.query(session,tbs['species'].other_names).filter_by(name=origin_latin_name)
        other_names_query_list = [x for x in other_names_query]
        original_list2 = list(set([y for y in x[0].split(',') for x in other_names_query_list]))
        if other_names_name not in original_list2:
            original_list2.append(other_names_name)
            new_list = ','.join(original_list2)
            new_names = {'other_names':','.join(original_list2)}
        origin_species = lib.get_or_create(
            session,
            tbs["species"],
            name = origin_latin_name,
            other_names = new_list
        )

elif语句中的部分不起作用.我遇到了两个问题:

(1)我得到的最新错误:NameError:未定义名称"new_list"

(2)我得到的另一个错误是我还有另一张表

map1 = lib.get_or_create(
    session,
    tbs["map1"],
    age_id_id = age,
    name_id_id = origin_species.id
    )

...并且它说找不到origin_species,但我认为这与elif语句有关,不知道origin_species对象是不是正确更新了.

如果有人可以提供帮助,我会很感激.

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