please help me my .get function is not working
def put():
a=name.get()
b=address.get()
c=quali.get()
d=job.get()
e=sal.get()
l=[a,b,c,d,e]
print(l)
name=tk.Entry(win,borderwidth=1,relief='solid',width=20).grid(row=n+3,column=1)
address=tk.Entry(win,borderwidth=1,relief='solid',width=20).grid(row=n+4,column=1)
quali=tk.Entry(win,borderwidth=1,relief='solid',width=20).grid(row=n+5,column=1)
job=tk.Entry(win,borderwidth=1,relief='solid',width=20).grid(row=n+6,column=1)
sal=tk.Entry(win,borderwidth=1,relief='solid',width=20).grid(row=n+7,column=1)
b4=tk.Button(win,text='Enter',borderwidth=3,relief='solid',width=20,height=5,command=put).grid(row=n+8,column=0)
when i run this code i am getting AttributeError: 'NoneType' object has no attribute 'get' please help