为啥我用不了 insert函数

feiua

我的python insert, append, extend 都用不了。这可咋整

>>> help(insert)
Traceback (most recent call last):
  File "<pyshell#16>", line 1, in <module>
    help(insert)
NameError: name 'insert' is not defined
>>> help (extend)
Traceback (most recent call last):
  File "<pyshell#17>", line 1, in <module>
    help (extend)
NameError: name 'extend' is not defined
>>> help(append)
Traceback (most recent call last):
  File "<pyshell#18>", line 1, in <module>
    help(append)
NameError: name 'append' is not defined

小甲鱼

1. >>> help(append)
   
2. Traceback (most recent call last):
   
3.   File "<pyshell#0>", line 1, in <module>
   
4.     help(append)
   
5. NameError: name 'append' is not defined
   
6. >>> help(list.append)
   
7. Help on method_descriptor:
   
8. 
   
9. append(...)
   
10.     L.append(object) -> None -- append object to end
    
11. 
    
12. >>>

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