谢谢各位大佬，找到原因了，就是捕获到异常后没有抛出异常给 pytest。
有没有相关的测试群呀，想要多学习学习

打了很多字发现无法附加内容和修改内容，就在评论区回了
先简述下我当前项目把，大概就是 pytest+yaml 的项目，其中 yaml 中有一个含 SQL 语句的字段，该字段大概作用是：在执行中，把该语句执行后查询出来的结果存起来，供给其他地方用。
而这里只支持拿取数据库中单个值，比如：

SELECT `phone` FROM `test`.`users` WHERE `phone` = 'XXXXX'

如果此字段填写 SQL 语句外的字符，如：aaa，在执行中会报错，并且最后断言也是显示失败的。

common\test_Template.py [2021-05-10 23:09:34,485]-logs.py:46]-ERROR:执行sql语句报错：(1064, "You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'aa' at line 1")
Traceback (most recent call last):
  File "C:\Users\86139\PycharmProjects\connector\common\execSql.py", line 85, in exec_sql
    cursor.execute(sql)
  File "C:\Users\86139\PycharmProjects\connector\venv\lib\site-packages\pymysql\cursors.py", line 148, in execute
    result = self._query(query)
  File "C:\Users\86139\PycharmProjects\connector\venv\lib\site-packages\pymysql\cursors.py", line 310, in _query
    conn.query(q)
  File "C:\Users\86139\PycharmProjects\connector\venv\lib\site-packages\pymysql\connections.py", line 548, in query
    self._affected_rows = self._read_query_result(unbuffered=unbuffered)
  File "C:\Users\86139\PycharmProjects\connector\venv\lib\site-packages\pymysql\connections.py", line 775, in _read_query_result
    result.read()
  File "C:\Users\86139\PycharmProjects\connector\venv\lib\site-packages\pymysql\connections.py", line 1156, in read
    first_packet = self.connection._read_packet()
  File "C:\Users\86139\PycharmProjects\connector\venv\lib\site-packages\pymysql\connections.py", line 725, in _read_packet
    packet.raise_for_error()
  File "C:\Users\86139\PycharmProjects\connector\venv\lib\site-packages\pymysql\protocol.py", line 221, in raise_for_error
    err.raise_mysql_exception(self._data)
  File "C:\Users\86139\PycharmProjects\connector\venv\lib\site-packages\pymysql\err.py", line 143, in raise_mysql_exception
    raise errorclass(errno, errval)
pymysql.err.ProgrammingError: (1064, "You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'aa' at line 1")

但是如果此字段填写正确的 SQL 语句，但是查询到的值有多个的情况下，如：

SELECT * FROM `test`.`users` WHERE `phone` LIKE 'XXXXX'

在执行中控制台也会报错，但是断言结果却是通过。

用例执行失败！
用例路径：testcase\其他_测试_01.yaml
用例标题：登录测试
报错信息：
catching classes that do not inherit from BaseException is not allowed
Traceback (most recent call last):
  File "C:\Users\86139\PycharmProjects\connector\common\customVar.py", line 82, in init_sql
    sql_dict.update({keys: eval(sql_value)})
  File "<string>", line 1
    61e9326ec6e748bf67110e30ae8a04a4
           ^
SyntaxError: unexpected EOF while parsing

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\Users\86139\PycharmProjects\connector\common\test_Template.py", line 123, in test_in_theaters
    pre_sql = CustomVar().init_sql(test_content_list['pre_sql'])  # 字典类型
  File "C:\Users\86139\PycharmProjects\connector\common\customVar.py", line 84, in init_sql
    except ExecSql as e:
TypeError: catching classes that do not inherit from BaseException is not allowed

因为我这边在断言前就会先输出好一些测试报告，这里我发现断言前的测试报告都没有输出，怀疑是报错后就没有继续执行了。
但很好奇同样都是报错，一个却能在报错后还能继续断言，并且正常输出测试报告，一个却在报错后没有继续向下输出测试报告，并且没有断言。

后来发现报错但断言通过的用例中，在报错后并没有继续往下执行代码，是不是这个原因导致的没有执行断言而默认成功？
而第一种情况失败了也会继续执行往下执行代码。
最后贴上执行错误的代码：

def init_sql(self, content):
        try:
            sql_dict = {}
            for keys, value in content.items():
                sql_value = ExecSql().exec_sql(value)
                if isinstance(sql_value, dict) and sql_value is not None:
                    sql_dict.update({keys: list(sql_value)[1]})
                if isinstance(sql_value, str) and sql_value is not None:
                    sql_dict.update({keys: eval(sql_value)})
            return sql_dict
        except ExecSql as e:
            self.log.error('初始化SQL语句失败：{}'.format(e))
try:
  XXXXX
  pre_sql = CustomVar().init_sql(test_content_list['pre_sql'])  # pre_sql就是用例中的SQL语句
  XXXXX
except Exception as e:
            self.log.error("\n\n用例执行失败！\n用例路径：{0}\n用例标题：{1}\n报错信息：\n{2}".format(path_file_list, test_content_list['title'], e))