Python 3.13.6 (tags/v3.13.6:4e66535, Aug  6 2025, 14:36:00) [MSC v.1944 64 bit (AMD64)] on win32
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list_1 = [0,10,20,30,40,50,60,70,80,90]
list_1
[0, 10, 20, 30, 40, 50, 60, 70, 80, 90]
[3:1:-1]
SyntaxError: invalid syntax
list_1[3:1:-1]
[30, 20]
list_1[5:8]
[50, 60, 70]
list_1[3:1:-1]=[61,62,63]
Traceback (most recent call last):
  File "<pyshell#5>", line 1, in <module>
    list_1[3:1:-1]=[61,62,63]
ValueError: attempt to assign sequence of size 3 to extended slice of size 2
list_1[3:1:-1]=[61]
Traceback (most recent call last):
  File "<pyshell#6>", line 1, in <module>
    list_1[3:1:-1]=[61]
ValueError: attempt to assign sequence of size 1 to extended slice of size 2
list_1[3:1:-1]=61,62
list_1
[0, 10, 62, 61, 40, 50, 60, 70, 80, 90]
a,b=1,2
a
1
b
2
list_1[10]=3
Traceback (most recent call last):
  File "<pyshell#12>", line 1, in <module>
    list_1[10]=3
IndexError: list assignment index out of range
>>> list_1.append(110,100,110,100)
Traceback (most recent call last):
  File "<pyshell#13>", line 1, in <module>
    list_1.append(110,100,110,100)
TypeError: list.append() takes exactly one argument (4 given)
>>> list_1.append([110,100,110,100])
>>> list_1
[0, 10, 62, 61, 40, 50, 60, 70, 80, 90, [110, 100, 110, 100]]
>>> list_1.extend([110,100,110,100])
>>> list_1
[0, 10, 62, 61, 40, 50, 60, 70, 80, 90, [110, 100, 110, 100], 110, 100, 110, 100]
>>> len(list_1)
15
>>> list_1.insert(len(list_insert),555)
Traceback (most recent call last):
  File "<pyshell#19>", line 1, in <module>
    list_1.insert(len(list_insert),555)
NameError: name 'list_insert' is not defined
>>> list_1.insert(len(list_insert),555)
Traceback (most recent call last):
  File "<pyshell#20>", line 1, in <module>
    list_1.insert(len(list_insert),555)
NameError: name 'list_insert' is not defined
>>> list_1.insert(len(list_1),555)
>>> list_1
[0, 10, 62, 61, 40, 50, 60, 70, 80, 90, [110, 100, 110, 100], 110, 100, 110, 100, 555]