在Python中如何调用在类中定义的函数？import pypyodbc as pyodbc

Master_Conn = 'Driver={SQL Server};Server=server\23;Database=DBname;UID=username;PWD=password;'

Master_db = pyodbc.connect(Master_Conn)

Master_Cursor = Master_db.cursor()

class Test:

def __init__(self):

self.master_status = ""

def Getmodel(self):

self.master_status= dict(Master_Cursor.execute("select col1,col2 from tablename ").fetchall())

print (self.master_status)

Test.Getmodel()

有了上面的代码，我得到TypeError: Getmodel() missing 1 required positional argument: 'self'

所以我试了Test.Getmodel(self)，结果是NameError: name 'self' is not defined.

我甚至用if __name__== '__main__':尝试了这两种方案，但得到了相同的错误。